Causes can include pollution, invasive species, low tides and significant changes in water temperature.
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The 12-hour variations, for instance, are due to each day's two high tides and low tides.
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That can happen because the water is too warm or too cold, or because of extreme low tides.
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Low tides, for one thing, made it nearly impossible for the boats to get to the beach to let Marines disembark.
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That can happen for a lot of reasons — because the water is too warm or too cold, or because of extreme low tides.
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Its tidal range, the difference in depth between high and low tides, of around 153 metres is among the largest in the world.
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The conditions for the launch had to be just so: a full moon for visibility, low tides to expose the underwater German defenses.
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When the Earth rotates, the bulges move around in the oceans, causing the high tides and low tides in oceans all over the world.
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It sat underwater before being exposed by extreme low tides caused by the wintry "bomb cyclone" storm system that hammered the Eastern US this winter.
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As the villainous sea witch, Queen Latifah proved herself to be the much-praised standout in a show that otherwise had high and low tides, so to speak.
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The vessel discovered in January had sat underwater before its exposure this winter by extreme low tides caused by the wintry "bomb cyclone" storm system that hammered the East.
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"The gravitational force of the moon pulls the water in the oceans upwards, creating high tides in the areas of Earth facing the moon, and low tides elsewhere," she said.
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The recent "bomb cyclone" created extremely low tides in the Mobile-Tensaw Delta, exposing charred beams forming the shape of a vessel with almost the exact dimensions of the Clotilda.
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Low tides revealed portions of the potential wreck sticking out of the mud near an island in the lower Mobile-Tensaw Delta, a swamp a few miles north of Mobile.
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But after the wreck was recently exposed by unusually low tides, AL.com reporter Ben Raines discovered its remains near Mobile and has taken the first step towards verifying its authenticity.
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The conditions caused extremely low tides in the area, allowing the boat to reveal itself: charred beams forming the shape of a vessel with almost the exact dimensions of the Clotilda.
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Andrew Jeffs, a marine scientist at the University of Auckland, told the New Zealand Herald that the mussels in Ferguson's video likely died from "heat stress" brought on by hot weather and mid-day low tides.
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This proposed law calls for a new reservoir below Lake Okeechobee, which would be able to contain overflow and store water that would be used for agriculture, to replenish the ecosystem during low tides, and drinking water in aquifers.
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But Mr. Raines said he set out on a boat to find the wreckage during especially low tides brought on by a large weather system that swept the country this month and eventually produced large snowfall in some parts of the Northeast.
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In 2004, for example, Elizabeth Cochran, a geophysicist with the U.S.G.S. who was not involved in this study, and her colleagues published a study that did show a slight increase in the number of earthquakes during low tides — but only those in deep ocean basins.
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Finally, last month, Ben Raines — a reporter for the website AL.com — exploited a period of abnormally low tides to search out the charred remains of a schooner whose dimensions and design match those constructed in the mid-19th century, when the Clotilda was built.
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There's a special type of tide when the sun, moon and Earth align together bi-monthly around the times of the New Moon and Full Moon -- a spring tide, which means high tides are higher and low tides are lower no matter the season. 9.
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To this day, Lovers' Isle is still visited by couples during low tides.
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At low tides much of the reef flat is exposed. #Elizabeth Reef, atoll about 8.2 by 5.5 km, area 51 km2 including lagoon, one islet: Elizabeth island (Elizabeth cay), no vegetation, 600 m by 400 m (area 0.2 km2), highest point 0.8 m. At low tides much of the reef flat is exposed.
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In 2005 historian Stuart Bacon stated that recent low tides had shown that shipbuilding had previously occurred in the town.
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The mangrove oyster is found in tropical intertidal zones. It grows on the bark of the stilt sections of mangrove trees, which are exposed during low tides and covered during high tides. It can also be found on some other suitable intertidal substrates in its range. This oyster has evolved to survive exposed to the air during low tides.
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Marginal Seas are anything within three nautical miles (6 km) of the coastal baseline (median between high and low tides at the shore).
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The second shows the much more variable high and low tides that form a "mixed tide". The third shows the day-long period of a diurnal tide.
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The ship may be visited as the timbers are exposed at very low tides in the sand just opposite the footbridge over the railway line at Bulverhythe.
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It is possible to walk out to this island from St Martin's at exceptional low tides, but great care must be taken not to be cut off.
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Particularly low tides create access to nearby beaches through the sand extension. As the coast stretch is almost horizontal, the water covers the beach again very quickly.
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When there are two high tides each day with different heights (and two low tides also of different heights), the pattern is called a mixed semi-diurnal tide.
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This air-breathing sea slug lives in the intertidal zone on rocky shorelines. It is exposed on rocky shores at low tides and retreats to crevices when the tide rises.
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Other historic sites include numerous shipwrecks, which are visible at low tides from the Coastal Trail and Mile Rock. A visitor center, Lands End Lookout, opened on April 28, 2012.
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Galileo theorized that because of the Earth's motion, borders of the oceans like the Atlantic and Pacific would show one high tide and one low tide per day. The Mediterranean had two high tides and low tides, though Galileo argued that this was a product of secondary effects and that his theory would hold in the Atlantic. However, Galileo's contemporaries noted that the Atlantic also had two high tides and low tides per day, which lead to Galileo omitting this claim from his 1632 Dialogue.
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The three-alarm fire was under control by 10:50 am, when only wreckage remained. Low tides aided search personnel in their attempts to recover bodies from the downed aircraft. Only a few bodies remained intact.
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Gim cultivation with floating rafts is the most suitable for mass-production because it is less labor-intensive than rack cultivation. This method keeps the laver submerged in the water during both the high and low tides.
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A tide clock is divided into two roughly 6 hour tidal periods that shows the average length of time between high and low tides in a semi-diurnal tide region, such as most areas of the Atlantic Ocean.
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Sheltered from the open sea, they ebb and flood to a recorded range unequal in the rest of the world.” Like pretty much every place along the ocean around the world, Burntcoat Head experiences two high tides and two low tides each day.
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Today, very little remains of the J. Marhoffer. The diameter boiler can still be seen at the bottom of the bay at low tide. During extreme low tides, on calm days, it is possible for visitors to walk down to the boiler.
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Elizabeth Reef at 8.2 by 5.5 km is slightly smaller than Middleton. Its cay, Elizabeth Island, measures about 400 m in length and is up to 400 m in width. At low tides much of the reef flat is exposed by the receding waters.
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The wreck is usually exposed by low tides which are below 0.6m above the chart datum (Dover). She lies in sand on a firm clay substrate on top of the prehistoric submerged forest. An explanatory panel is placed opposite her location on the sea wall.
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The dials and scales made it much easier for an operator to precisely determine the height and time of high and low tides. The paper graph, referred to as a tide curve, was very useful as a record of the computation that could be checked later to confirm the calculations were performed correctly. A hand crank turned by the operator provides the power for the machine’s mechanical calculations. Battery-powered electrical circuits are used to mark the start of hours and days on the paper graph and to stop the machine when high and low tides were reached so the operator can note the height and time.
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Intertidal flora and fauna inhabit more than of rocky coastline. The nutrient-rich marine waters cover the intertidal plants and animals twice a day. Pools of calm water form among the rocks around low tides, inhabited by starfish, dog whelks, blue mussels, sea cucumbers, and rockweed.
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At the point of Kamilo, waves have cut a large indentation, creating a variety of rocky points, ponds, and channels. Most of these are exposed during low tides, and are awash during high tides. The backshore at Kamilo contains such vegetation as naupaka, milo, and ironwood.
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USGS GNIS Feature Detail Report Typically seen at low tides, Zubof Rock is about long from north to south. It is about southwest of Crow Island.U.S. Coast and Geodetic Survey. United States Coast Pilot: Alaska, Part I: Dixon Entrance to Yakutat Bay, Sixth Edition, p. 177.
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Soon after, the burning schooner's fuel tanks exploded. Witnesses claim debris was launched nearly a half mile to a mile inland. The remains of the vessel were left in the bay, including her engine boiler. Today, the boiler can still be seen at extreme low tides.
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The Cheynies are a group of reefs and small islands, between Oxna and Hildasay in the Shetland Islands, Scotland. They have been considerably eroded in the historic past, and some of the islands are still connected at low tides. They are about twenty hectares in area.
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Its Cornish language name—literally, "the grey rock in a wood"—may represent a folk memory of a time before Mount's Bay was flooded, indicating a description of the mount set in woodland. Remains of trees have been seen at low tides following storms on the beach at Perranuthnoe.
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It was located near the present Yacht Club Alagoas (Clube Alagoinha). The reefs form natural pools and it is very common, during low tides, to see tourists bathing in these pools, especially near the lighthouse. There are some stands with live music, bars, restaurants, snack bars, and hotels.
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The mainland is generally mountainous. The province has many caves and tunnels in its islands. Some are half-submerged in water most of the time and could be accessed only during low tides like the Sohoton Cove at Bucas Grande Island. Its biggest islands are usually mountainous and rich in minerals.
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Compare the reversible compounds kanman 干満 and mankan 満干or michihi 満ち干 meaning "ebb and flow; high and low tides; the tides". Shiomitsu-tama 潮満珠 and shiohiru-tama 潮干珠 are archaic "tide jewel" names using shio or chō 潮 "tide; flow; salt water".
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The barrier is also used to keep the river level higher during low tides, for the benefit of WaterFire events. The barrier was closed on October 29, 2012 due to Hurricane Sandy. The water crested at 9.5 feet, the fifth highest crest on record. The flood stage is 7 feet.
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Maid of Argyll had a forward observation lounge and an aft tearoom, both with large windows. A lower deck lounge was later converted to a bar. Open deck space available for passengers was limited. The bridge was forward on the promenade deck, with a landing platform above, for use at very low tides.
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Roca Remolino (lit. "whirl rock") is a submarine mountain in Chacao Channel, Chile, notorious for being a major hazard for traffic along the channel. Roca Remolino does not show up during low tides. When there are strong tidal currents in Chacao Channel the rock creates a whirl effect, drawing objects to it.
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Fittingly named Alki Beach, it features a long strip of sandy beach full of driftwood, seashells, and fire pits. Low tides offer West Seattleites an opportunity to explore marine life in tidepools. Alki also hosts a flat bike and running trail from which visitors can view the Seattle skyline, Puget Sound, and the Olympic mountains.
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This chiton occurs from southern Florida to Mexico, south to Panama, and in the West Indies.Catalogue of life They orient themselves, maintaining a constant zonal level, according to the exposure to wave action along the coastal shore line. This organization is due to their foraging behavior, which is limited to the nocturnal low tides.
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Further south, about southwest of Cape Recife, the western starting point of the bay is Thunderbolt Reef. Though not in the bay, this hazard to navigation has claimed many ships carelessly entering or leaving. Thunderbolt Reef is submerged save for spring low tides and the surf crashing on it can be observed from the mainland.
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MV Maid of Skelmorlie had a forward observation lounge and an aft tearoom, both with large windows. A lower deck lounge was later converted to a bar. Open deck space available for passengers was limited. The bridge was forward on the promenade deck, with a landing platform above, for use at very low tides.
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MV Maid of Ashton had a forward observation lounge and an aft tearoom, both with large windows. A lower deck lounge was later converted to a bar. Open deck space available for passengers was limited. The bridge was forward on the promenade deck, with a landing platform above, for use at very low tides.
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Velma (plural velme) is a Venetian dialect term derived from "melma" (mud). It is also used by Italian scientists to refer to lagunar mudflats (also called tidal flats), such as those found in the Lagoon of Venice. They are areas of shallow lagunar bottoms which are normally submerged, but emerge at low tides. They are generally without vegetation.
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A'eron island is a tiny island (approx 800 ft x 1600 ft) located near the mouth of the Umpqua River on the Pacific coast of Oregon in the United States. At very low tides it can be reached via the Oregon Dunes National Recreation Area over a narrow naturally occurring sand causeway or by boat at higher tide levels.
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The Princes Channel wreck, also known as the Gresham Ship is an Elizabethan shipwreck (c. 1574) that was discovered in the Princes Channel in the Thames Estuary. It was discovered by the Port of London Authority in 2004 during a dredging operation to remove obstructions that posed hazards and impeded navigation during low tides (Auer, J. and Firth, A.).
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In doing so, the critical nutrient provided by wrack remains in the ecosystem, limiting disruptions to the food chain and ecosystem. Oftentimes, the nutrients from wrack will be redistributed to groomed portions of the beaches through wind and waves. For this reason, it is most important that this suggestion be implemented on beaches with consistently low tides.
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The French never suspected that there was only of water over the lower fords at certain low tides, a fact that the Allies gleaned from Basque fishermen. Allied intelligence knew that the next low tide was 7 October. The crossing was meticulously planned. Near the lower fords, British engineers built a turf wall near the river.
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Tompot blennies are very territorial and their territories are centred around a crevice in the rocky reef which the fish uses for shelter. They occur in shallow seas at depths of although smaller specimens occur in rockpools. They may be found above the low tide mark at very low tides, sheltering under boulders or among exposed vegetation.
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Meadowbank has a ferry wharf on the Parramatta River as part of the Sydney Ferries network. The next wharf west is Sydney Olympic Park and east is Kissing Point. The ferry primarily services tourists on weekends and city workers during the week. RiverCat catamaran type ferries work the Parramatta River route due to shallow waters, particularly during low tides.
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During high tides it is divided from St. Martin's Island by the sea. During low tides, the island can be reached by walking for about 2½ hours from St. Martin's Island. The most popular travel mode to it is by local motorboat or tourist boat services. Washed up corals can be found on the island's beaches.
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Gores Island, also known as Gore's Island, is an island in Strangford Lough, County Down, Northern Ireland. It is connected to nearby Castle Island, and thence to the mainland, by a narrow roadway (causeway) that is passable only at low tides. It has been inhabited previously, but has had no residents since the early 20th century.
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Repair and maintenance of the dockyard was generally carried out during the lowest low tides of the full and new moon. Ships used to enter the dockyard at high tide. There is a platform in the central part where ships were positioned for bottom repair and cleaning. Even during the monsoon the dockyard was a suitable shelter for ships.
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Pulau Sekudu Pulau Sekudu (Chinese: 青蛙岛), or Frog Island, is an islet located just off Chek Jawa on Pulau Ubin, Singapore. It lies in the Serangoon Harbour opposite Changi. Despite its proximity, it is only reachable by boat, even at low tides. One can see the islet directly opposite the Chek Jawa Visitor Centre.
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In the modern era, it is said that remnants of the walls can still be seen at some distance from the beach during exceptionally low tides at Felixstowe. The ruins of the fort are visible (May 2020) at very low spring tides when the tidal height is less than 0.2 metres. Spring tides occur on full or no moon.
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This photo shows the largest of the three sections of Tide-Predicting Machine No. 2. The gears on the left transmit power from the hand crank. The components on the right contribute to the computation of the time of high and low tides. Much consideration was given to the mechanical characteristics of the components to ensure reliability and accuracy.
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Some historical documents note that due to the silting of the harbour, ships could only carry approximately 380 tonnes into port. At low tides ships had to be winched into harbour. A currach would bring the rope out to the ship. Locally quarried flag was cut and polished beside the harbour and winched onto ships by steam crane.
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Some gobiids remember landmarks that are within short distances, and use them to find their ways. Small frillfin gobies (Bathygobius soporator) live in intertidal zones. They swim through the pools during high tides and memorize how each pool connects to the others. Then, during low tides, they can exhibit accurate jumping behaviors, as they have memorized the paths.
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The Colvin Bridge – named after the Lord Lieutenant of Essex, Brigadier-General R.B. ColvinBrigadier-General Colvin laid the bridge's first pile – operated with a sliding central section that retracted for boats passing along Benfleet Creek. Prior to the Colvin Bridge's construction, crossing the creek was achieved by either rowing-boat ferry or by a gravel causeway or stepping-stones at low tides.
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Dash Point State Park is a popular destination for residents of Federal Way during the summer months. Due to the tide patterns on the point, low tides reveal large areas of beach providing ample space for people to enjoy. It is common to see skim boarders on the beach. There is a yearly competition held by Dash Boards each summer.
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A favourite among surfers. Devereux Beach is on the east side of Coal Oil Point in Isla Vista, CA. Behind the beach is the west campus of the University of California Santa Barbara. Surfers enjoy this surf spot that has a solid right hand break and tide pools seekers can find a reef right at the point to explore at low tides.
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Swally is the anglicization of Suvali. Suvali port is close to the modern day village of Suvali, located in Surat, India. The port was constructed by the English as they found it protected both from sudden squalls and military attacks. Besides, the English found it convenient to use the place for their early trade with Surat as Swally was navigable in low tides.
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Other fish species using the estuary include American shad, smelt, perch, starry flounder, bass, catfish, and Pacific lamprey. Harbor seals use sandbars and mud flats as resting sites at low tides, while seals and California sea lions feed on fish in the estuary. Beaver, raccoon, weasel, mink, muskrat, river otter, Columbian white-tailed deer and invasive nutria also live on the islands.
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MV Maid of Cumbrae had a forward observation lounge and an aft tearoom, both with large windows. Open deck space available for passengers was limited. The bridge was forward on the promenade deck, with a landing platform above, for use at very low tides. She had two masts and a single funnel, above the central engines, with the galley aft.
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At very low tides the base of the promontory is exposed, making Tomahawk and Smaills effectively a single beach. Northward, the beach rises into scrub-covered dunes and a steep slope leading up to the suburb of Ocean Grove. The beach slopes strongly southward between the tide lines but flattens out below the low tide mark. The swell is usually strong.
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In addition, the Wenela Tidal Pool, south of the town, includes a natural tunnel and blow hole that links the pool to the Indian Ocean. Right on Praia de Xai Xai Beach there is a giant rock pool that forms at medium and low tides that is up to 200 metres long, forming a giant safe pool for families and swimmers.
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Near Odiorne Point State Park in Rye, this sunken forest is referred to as the "Drowned Forest". The roots of different coniferous trees (including white pine and hemlock) are visible at most low tides. Core samples taken from the roots indicate that the trees are about 3,500 - 4,000 years old. Scuba divers commonly explore the Drowned Forest to learn about these ancient remains.
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Matinicus Isle is located approximately 1 mile (1.6 km) north of Criehaven Isle. The shoreline consists of rocky coves and sandy beaches. The island experiences semidiurnal tides with a difference in sea level of up to between high and low tides. There are ten major fishing grounds around Matinicus Isle that the island's fishermen use to catch cod, haddock, pollock, cusk, and lobster.
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Helliar Holm is an uninhabited island off the coast of Shapinsay in the Orkney Islands, Scotland. It is home to a lighthouse, which was built in 1893 and automated in 1967.Lighthouse Explorer database It is a tidal island that used to be connected to Shapinsay. It is still possible to walk across from the mainland during very low tides.
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The bay's tides are semi-diurnal, meaning that the region experiences two high and low tides daily. The tides range in height from at the bay's mouth and at its head. Water depth varies about between high and low tide. The lunar, semi-diurnal M2 tide occurs at a period of 12.42 hours, with two tides occurring in the watershed every 24 hours and 50 minutes.
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Sediment deposits from the glacier have gradually filled the eastern and western margins at its inlet, as seen during low tides. The central one third of the glacier, however, touches water edge with a recorded depth of of water, during high tide. The walls of the fjord of the glacier, however, also show marks of lateral deposits of the glaciers right up to rock faces.
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L. scabra has a more rugged outline and grows to fit the rock surface of its home base. The differences in micro-habitat may be explained by its greater tolerance of exposure to desiccation during low tides in less protected sites because it is able to retain water better. If transplanted to unfamiliar territory, each species soon reselects its typical base habitat.Haven, S. B. 1971.
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At very low tides it is possible to view the remains of an ancient mixed forest on the beaches of Mablethorpe and Sutton on Sea. It was submerged by rising sea levels about 3000 years ago. Sea flooding was a periodic problem in the Middle Ages. The village was last flooded on 31 January 1953, when a ten-foot storm surge broke through the flood defences.
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Conspiracy Island is a privately owned tidal island situated in the Assonet River off Berkley, Massachusetts. According to the 2000 census, Conspiracy Island is uninhabited. In very low tides, the island is actually a peninsula, accessible across a sandy stretch of land connecting it to a nearby beach. A Gazetteer of the State of Massachusetts, published in 1890, describes the history of localities in Massachusetts.
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Halibut Rock, just off the rocky shore of Peggy's Cove Point, Nova Scotia, is a navigation hazard, lying slightly below the surface. Extreme low tides sometimes offer a quick glimpse of its flat surface protruding above the trough of a swell. Most times cresting waves reveal its location, just southwest of the lighthouse. Halibut Rock is charted on the Nautical Chart of St. Margaret's Bay D7-4386.
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Archaster typicus is a five-limbed star with long, slightly tapering arms with pointed tips. Occasionally three, four, or even six-armed individuals occur. Adults grow to in diameter, with males often being smaller than females. This starfish is adapted to life on the sandy seabed, where it buries in the sediment during high tides and moves over the sediment surface during low tides.
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This sea star occurs along the coast of North America from Sitka, Alaska to La Jolla, California. It is found in Puget Sound. The pink sea star is found in relatively shallow water from the lower intertidal zone to deep. The animal does not tolerate being out of water very well, so it is generally found on the beach only during very low tides.
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The Nooksack empties into Bellingham Bay, the Dungeness and Elwha into the Strait of Juan de Fuca. The Chilliwack River flows north to the Fraser River in Canada. Tides in Puget Sound are of the mixed type with two high and two low tides each tidal day. These are called Higher High Water (HHW), Lower Low Water (LLW), Lower High Water (LHW), and Higher Low Water (HLW).
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The adults feed on small organic particles (detritus) and seagrasses that are brought in with the tide. Their habitat is a gently sloping intertidal zone with two high and two low tides each day. There are large differences in the duration of flooding and sea level between the two high tides each day, between seasons and between places nearer to or further from the shoreline.
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The shallowest peak, the Bishop Rock, rises to between 3 and 6 feet (1–2 m) from the surface, depending on the tides. On very low tides, the rock can be visible in the trough of passing waves. Other shoal spots besides the Bishop Rock also spawn giant waves. These shoals range in depth from 30 to 100 feet and are a hazard to shipping.
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The strip of land from Aksa Beach to Marve used to be one of many islands that lay off the Salsette west coast. These islands seem to have remained separate till as late as 1808. At the time of writing of the old Gazetteer of Thana in 1882, these islands could be reached during low tides by walking across the tidal inlets in between.
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Two quays are used (depending on tides) by boats which take tourists between Bryher and other islands, including St Mary's and Tresco. On some low tides it is possible to walk between Bryher and Tresco and even Samson, the uninhabited island to the south. There is also safe anchorage for small yachts in the channel and Green Bay. Local activities include boating, walking and watching wildlife.
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Looking north over the Broadwater Southport Pier, 2015 The entrance of the Nerang River was at Main Beach in the late 19th century but by the 1980s had moved about northwards. The Seaway was completed in 1986 to stabilise the location of the Nerang River Entrance. Its construction has allowed greater tidal flows. This has created a larger tidal range within the Broadwater with lower low tides.
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The oceanic zone is the vast open part of the ocean where animals such as whales, sharks, and tuna live. The benthic zone consists of substrates below water where many invertebrates live. The intertidal zone is the area between high and low tides; in this figure it is termed the littoral zone. Other near-shore (neritic) zones can include estuaries, salt marshes, coral reefs, lagoons and mangrove swamps.
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Saunders (ed.), Jane's Fighting Ships 2008-2009, p. 876 Plans to launch the ship on 8 April 2005 were frustrated by high winds and unusually low tides; the naming ceremony was carried out that day, and the actual launching took place the next day, with more favourable tide conditions. Cardigan Bay was dedicated on 18 December 2006, the third of the class to enter service with the RFA.
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These octopus eat mainly fish and crustaceans. They hunt at night and can be observed foraging over reef flats or on sand and gravel substrate during nightly low tides. Hunting consists of probing long arms down holes or enveloping small coral heads within the webs and using the arm tips to flush prey into the waiting suckers. The stomach contents also regularly contain the beaks of other octopus species.
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During low tides, the rock gunnel may remain above the waterline, sheltered beneath rocks and algae, and can breathe air if necessary. They are frequently encountered on rocky shorelines, and splash around noticeably when uncovered. Within its North American range, the rock gunnel disappears from the intertidal during winter, likely to avoid freezing air temperatures. Spawning occurs during the winter, and demersal egg masses are guarded by the parents.
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Although the sound between St. Mary's and Tresco, The Road, is fairly shallow, it never becomes totally dry, but according to some sources it should be possible to wade at extreme low tides. Around St. Mary's several minor islands become accessible, including Taylor's Island on the west coast and Tolls Island on the east coast. From St. Agnes, Gugh becomes accessible at each low tide, via a tombolo.
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The ferry primarily services tourists on weekends and city workers during the week. RiverCat catamaran type ferries work the Parramatta River route due to shallow waters, particularly during low tides. There are five Sydney bus routes that service the area: the 520/M52 travels to and from Parramatta Station to City and Circular Quay. The 523 travels via Spurway and Bartlett Streets in Ermington and on to West Ryde.
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Gantheaume Point is located at the extreme southern end of the beach. The Gantheaume Point lighthouse is a good place for observing dolphins and migrating whales during their migration seasons. Dinosaur footprints estimated at 130 million years old are visible in the rocks at low tides. Minyirr Park is located adjacent to the southern section of the beach with walking trails that traverse the area behind the red ochre dunes.
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This coincided with the completion of the construction of the overland telegraph cable from Adelaide to Darwin. The first message sent directly from London to Adelaide occurred on 22 October 1872. A second submarine cable from Java to Darwin was laid in 1880. The site in the intertidal zone where the cables come ashore in Darwin, where they are still visible during very low tides, was heritage listed in 2020.
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At an estuarine location that is subject to occasional freshwater conditions, the heavier higher salinity water in the borrow can provide protection from freshwater exposure. The host pumps water into the burrow which keeps the interior oxygenated. C. dissimile can tolerate hypoxia for three days. This ability may allow it to survive periods when water circulation is reduced or eliminated by low tides or sand clogging the burrow entrance.
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During low tides on the foreshore of the sandy beach beneath Beeston Bump, one can find the curious paramoudras and the even stranger flint circles. These are sometimes mixed in with the exposed "Beeston Chalk". In Norfolk, paramoudras are known as pot stones, due to the shape. Local folklore tells of the southern slopes of the Bump being festooned with grapevines, tended by the monks of the priory.
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Male and female flowers are borne on different plants and there are many more female plants than males. The flowers are in spikes at the base of the leaves and do not have petals. The pollen is spread by water movement which can occur underwater, but most pollination takes place on the surface of the sea at very low tides. Seedlings cannot establish themselves directly on rocks or colonise bare areas.
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The closely related species, Tellina fabula is found over the same distribution range but the two are not usually in competition as T fabula occurs from low water level to a depth of about forty metres. Because of its greater exposure at low tides, T tenuis is more susceptible to harm in cold winter weather.Encyclopedia of Life Young flatfish sometimes feed on the tips of the protruding siphons. The damaged siphons are able to regenerate.
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Latterly, however, the stream commenced to silt up, each fresh bringing down from the Araluen thousands of tons of sand. In fact, the Moruya for years had to do the duty of a monster tail-race for the diggers of the Araluen Valley. Immense sandbanks now have formed in the river. The punt cannot work, and the crossings, which only can be attempted by horses or vehicles at low tides, are dangerous in the extreme.
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Eilean Tigh is connected to the northern tip of neighbouring Raasay at low tides by a rocky ledge that crosses Caol Eilean Tigh. Rona lies about away across the straits of Caol Rona at the centre of which is tiny Eilean an Fhraoich (English: heather island). On the Rona side are Garbh Eilean (rough island) and Eilean Seamraig. Eilean Fladday is to the south and Skye is some to the west across the Sound.
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The tidal range at the Isles of Scilly is high for an open sea location; the maximum for St. Mary's is . Additionally, the inter- island waters are mostly shallow, which at spring tides allows for dry land walking between several of the islands. Many of the northern islands can be reached from Tresco, including Bryher, Samson and St. Martin's (requires very low tides). From St. Martin's White Island, Little Ganilly and Great Arthur are reachable.
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During low tides the harbor offers a tide pool area at the east end of the beach. Sea kayaking is not recommended for the novice as high winds can develop without notice. Bathers, divers and kayakers should be aware and alert to the occurrence of great white sharks in these waters. It is unwise to enter the water in early morning or late afternoon to early evening hours when sharks are feeding close to shore.
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The Site of Special Scientific Interest known as Pagham Harbour is to the southwest; almost one quarter of the area falls within the parish. The harbour and surrounding land is of national importance for both flora and fauna. The shingle spit is of geological interest. A Phoenix breakwater, a concrete caisson that was intended to be part of a World War II Mulberry Harbour, is visible in the bay at low tides.
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She was then left derelict, becoming one of the most-photographed objects in the Bay, until April 1996, when waves submerged her in deeper water during a snowstorm. The remains of James Longstreet, also referred to as "the target ship", lie approximately off Eastham, Massachusetts in of water. The site is off limits to divers due to unexploded ordnance, but the remains of the ship can be observed above the water during extreme low tides.
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Saint-Jean-de-Monts is known for its sandy beach, more than eight kilometres long. Due to its often low tides, it offers a great area for walkers, fishermen, and beach games. The town is noteworthy for the recent restoration of its seafront,planum - topics - themes online a town planning operation taking over five years to complete. The result now means a network of footpaths and cycle tracks are enhanced by plants, flowers and shrubs.
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Even when a colony is sexually reproductive, a large proportion of polyps remain infertile, which demonstrates the greater importance of asexual reproduction and growth. Z. sociatus colonies do not become reproductive until they reach a certain size. They use external fertilization, and are mostly hermaphroditic, although some are male or protogynous (female and then male). Z. sociatus was found to reproduce seasonally in Panama, and synchronizes the release of gametes with extremely low tides.
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White mangrove (Laguncularia racemosa) is the third-most dominant, followed by botoncillo (Conocarpus erectus); both are generally found further inland and are inundated by the tide less frequently. The dominance of different species over others correlates with the frequency of floods, water quality, and levels of salinity.Sanchez, 1999: 13 The amplitude of tides is on average per day in the Gulf. During low tides, the soils are inhabited by crabs, conch, and other species.
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A 7,000-year old petrified forest stretches along the coastline south from Hartlepool and along Redcar Beach. It was first discovered in 1871 when wild boar tusks and deer antlers were found in the sand. Storms in March 2018 revealed the extent of the ancient forest with petrified tree stumps being exposed to the open air on Redcar Beach when a combination of the storm and low tides removed all the sand from the beach.
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The park is popular with walkers, cyclists and dog-walkers, with the Hobsons Bay Coastal Trail passing through the park. The large, open spaces provide unrestricted views of Port Phillip Bay and Melbourne City across the salt marsh. At low tides when the seawater recedes, much of the coastal seabeds are exposed, allowing one to walk a considerable distance into the sea. The park is also used for research and study purposes.
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This subregion is mostly submerged – it is only exposed at the point of low tide and for a longer period of time during extremely low tides. This area is teeming with life; the most notable difference between this subregion and the other three is that there is much more marine vegetation, especially seaweeds. There is also a great biodiversity. Organisms in this zone generally are not well adapted to periods of dryness and temperature extremes.
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Like all olives, the lettered olive is a carnivore: it captures bivalves and small crustaceans with its foot and takes them below the sand surface to digest.Lettered Olive, NC Sea Grant Its presence is sometimes detected at very low tides by the trails it leaves when it crawls below the surface on semi-exposed sand flats. Females lay floating, round egg capsules that are often found in beach drift. Young are free swimming.
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The amplitude of the tides is relatively low and strongly varies across the sea. It reaches 3 meters in the south near the Korea Strait, but quickly drops northwards to at the southern tip of Korean Peninsula and to meters at the North Korean shores. Similar low tides are observed in Hokkaidō, Honshū and south Sakhalin. The amplitude however increases to toward the north of the Strait of Tartary due to its funnel-like shape.
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Because the oscillation modes of the Mediterranean Sea and the Baltic Sea do not coincide with any significant astronomical forcing period, the largest tides are close to their narrow connections with the Atlantic Ocean. Extremely small tides also occur for the same reason in the Gulf of Mexico and Sea of Japan. Elsewhere, as along the southern coast of Australia, low tides can be due to the presence of a nearby amphidrome.
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Creepers, grasses and sedges stabilise sand dunes and uncompacted sediments. The Sunderbans mudflats (Banerjee, 1998) are found at the estuary and on the deltaic islands where low velocity of river and tidal current occurs. The flats are exposed in low tides and submerged in high tides, thus being changed morphologically even in one tidal cycle. The tides are so large that approximately one third of the land disappears and reappears every day.
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The path includes a short (c. 0.5 km) optional section known as the Elie chainwalk, between Kincraig Point and Earlsferry to the west of Elie. This route, which should only be used during low tides, has chains fixed to the cliffs and rocks of the shore to assist progress, and is sometimes referred to as Scotland’s secret via ferrata. At times, short vertical climbs are necessary, although most of the chains are positioned to provide support while walking.
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Smaills Beach is approximately long and faces close to due south. The westernmost section of the beach is strewn with boulders. To the west, it is separated from Tomahawk Beach by a small promontory of black volcanic rock, referred to in 19th-century accounts as Tomahawk Bluff, on the top of which stands the Jack Fox Lookout. At very low tides the base of the promontory is exposed, making Tomahawk and Smaills effectively a single beach.
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In 1882, one could walk across the tidal inlets during low tides to reach these islands. The island of Dharavi, however, had to be reached by a boat. However, with the building of the railways over the Ghodbunder Creek, and with successive urbanization and reclamation of the tidal inlets, the Island is now effectively a peninsula attached to Salsette Island. North Dharavi Island which falls in the Thane district while the south is included in the Mumbai Suburban district.
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Location of Lavan Sands Lavan Sands (Welsh: Traeth Lafan) is an intertidal sandbank found in the Menai Straits between Bangor, Gwynedd and Llanfairfechan, Wales. Totally underwater at high tide, at extreme low tides it measures east-west and north-south. At the western end is found another sandback Bangor Flats and just north is the sandbank Dutchman's Bank. At low tide the Lavan Sands make the narrowest part of the Menai Straits, at Beaumaris, a mere .
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A large wooden platform known as 'McKenzie's Landing' was constructed and at high tide, boats would unload goods onto the platform and at low tides horse and cart would be used to collect the items. The same would be done to load boats. The town was surveyed during December 1909 and proclaimed under the name McKenzie on 16 June 1910 presumably after William McKenzie. The town was officially renamed as Denial Bay on 19 September 1940.
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The buildings on the harbour side house the Balmain Swimming Club including club change rooms and there is also a tiered stand for spectators. The room in the tower houses the archives of the swimming club, which go back to 1884 and also served as a club meeting rooms. The pool itself is surrounded by a timber deck used for access, watching swimming races and sunbaking. At low tides there is a small sandy beach alongside the entrance.
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Tide tables are published by the Port of London Authority and are available online. Times of high and low tides are also posted on Twitter. The principal tributaries of the River Thames on the Tideway include the rivers Brent, Wandle, Effra, Westbourne, Fleet, Ravensbourne (the final part of which is called Deptford Creek), Lea, Roding, Darent and Ingrebourne. At London, the water is slightly brackish with sea salt, being a mix of sea and fresh water.
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There have been an increasing number of polar bear drownings because they become exhausted by having to swim farther to find ice or prey. Not only are marine mammals impacted by climate change but so is other marine life. An example of this could be coral. When coral is introduced to warming ocean temperatures changes, runoff and pollution, overexposure to sunlight extremely low tides and other stresses, the coral will expel an algae growing on them.
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The Touques was still unchannelled but during the Second Empire the low tides permitted the construction of walls. In the 1860s visits by Napoleon III made the coast of Normandy adjacent to Deauville fashionable, and soon speculators developed the infrastructure necessary to accommodate members of the Imperial court and the growing Parisian bourgeoisie. The railway arrived at Trouville-sur-Mer in 1863. Using the station called Trouville, passengers could reach Deauville in six hours from Paris.
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San Salvador Island sits on its own isolated carbonate platform surrounded by a narrow shelf that reaches a depth of up to 40 meters. Past the shelf, the slope becomes almost vertical and depth quickly increases to 4,000 meters. San Salvador Island experiences a semi-diurnal tide, with two high tides and two low tides per day. Water temperature in San Salvador can range from 23⁰C to 29⁰C depending on the location and time of year.
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Church Farm Sunk Island originated as a sand bank in the Humber Estuary; at first it was open sea, then sand accumulated there until visible at low tides, then at all tides. Colonel Anthony Gilby made the outer banks, empoldering it and making it useful for pasturage, under lease/gift from the crown.Philosophical Transactions, vol 30, p. 1015 By the reign of Charles I of England, it was said to form a island, from the mainland.
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A nearby city, Shirahama, is famous for its artificial white beach, and Tanabe has now constructed a beach of its own in hopes of drawing more tourists. The beachfront area is the site of the Benkei Matsuri (a Yosakoi dance festival that takes place in October). Another beach in the main city is Tenjinzaki Cape, a preserved beach made of layered slabs of rock formation. The beach is submerged with water during high tides and revealed during low tides.
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Calve is classed as a separate island from Mull, although at its south-western point there are extreme low tides that would allow land access to it, via the small tidal island of Cnap a' Chailbhe. Between Mull and Calve runs the channel known as Dòirlinn a' Chailbhe. Calve provides some shelter for Tobermory Bay, helping to make it a safer anchorage. At the north-west of Calve is another small tidal island called Eilean na Beithe.
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The Sunderban mudflats are found at the estuary and on the deltaic islands where low velocity of river and tidal current occurs. The flats are exposed in low tides and submerged in high tides, thus being changed morphologically even in one tidal cycle. The interior parts of the mudflats are the right environment for mangroves. There are a number of mudflats outside the Sundarbans National Park is a mudflat that have the potential to be tourist spots in the Sundarbans.
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The algal diet varies depending on algal abundance, individual preferences, foraging behaviour, season and exact island of feeding. Some species with chemical deterrents, such as Bifurcaria, Laurencia and Ochtodes, are actively avoided, but otherwise algal food choice mainly depends on energy content and digestibility. On Santa Cruz Island, 4–5 red algal species are the food of choice. During neap low tides, however, the usually avoided green algae Ulva lobata is eaten more often since the preferred red algae is not easily available.
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Although stomatopods typically display the standard locomotion types as seen in true shrimp and lobsters, one species, Nannosquilla decemspinosa, has been observed flipping itself into a crude wheel. The species lives in shallow, sandy areas. At low tides, N. decemspinosa is often stranded by its short rear legs, which are sufficient for locomotion when the body is supported by water, but not on dry land. The mantis shrimp then performs a forward flip in an attempt to roll towards the next tide pool.
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Tide-Predicting Machine No. 2, also known as Old Brass Brains, was a special- purpose mechanical computer that uses gears, pulleys, chains, and other mechanical components to compute the height and time of high and low tides for specific locations. The machine can perform tide calculations much faster than a person could do with pencil and paper. The U.S. Coast and Geodetic Survey put the machine into operation in 1910. It was used until 1965, when it was replaced by an electronic computer.
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Tide pools at Pillar Point showing zonation on the edge of the rock ledge Washington, western United States. Marine biologists divide the intertidal region into three zones (low, middle, and high), based on the overall average exposure of the zone. The low intertidal zone, which borders on the shallow subtidal zone, is only exposed to air at the lowest of low tides and is primarily marine in character. The mid intertidal zone is regularly exposed and submerged by average tides.
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The north wing was added about 1770 and a south wing in 1857. Reverend Walker, the skating minister in Raeburn's famous portrait, lived here from 1776 to 1784. Offshore, Cramond Island has WW II fortifications and is linked to land by a causeway with a line of concrete pylons on one side, constructed as an anti shipping barrier. At certain low tides sand extends to the island, tempting visitors to visit the island, though occasionally some are stranded by the incoming tide.
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Black Rock from Brighton Marina sea wall Black Rock is an area of undeveloped land located near Brighton Marina in the city of Brighton and Hove. It was previously the site of a swimming pool that was demolished in the 1970s. There is also an area just to the East of the Marina that is known as Black Rock. Here at low tides a vast area of Black rocks can be seen that are excellent for nature observations for the likes of ecologists.
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The intertidal area at Sisters’ Islands Marine Park are only organised during low tides of 0.4 metres and below, allowing the marine life in the area to be seen which is usually submerged under water. Nature guides will be at hand to bring you on a tour to experience the MarinePark's amazing biodiversity. These guided walks are conducted free of charge and each guided walk session is open to a maximum of 45 people. The walks are currently limited to the shores off Sisters’ Islands.
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They are scattered about from the mainland, divided into the Inner Group and the Outer Group. The main islands in the Inner Group are Inner Farne, Knoxes Reef, the East and West Wideopens (all joined together on very low tides), and (somewhat separated) the Megstone; the main islands in the Outer Group are Staple Island, the Brownsman, the North and South Wamses, Big Harcar, and the Longstone. The two groups are separated by Staple Sound. The highest point, on Inner Farne, is above mean sea level.
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Reached via a road from the Carsaig Pier, the track is strewn with volcanic rocks and boulders and involves about 4 miles of walking to reach it. The first arch is visible at the end of the trek while descending from the ridge and looks as if it is opening into the sea and the second one is hidden. The openings created by wave action have been likened to cave entrances that "lead to another planet." They are most easily approached during low tides.
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In the nineteenth century, Juhu was an island: a long, narrow sand bar rising above sea level by a metre or two, just off the west coast of Salsette. It could be reached during low tides by walking across the tidal inlet. Juhu was called "Juvem" by the Portuguese. At its north point, nestled the village of Juhu, inhabited by Bhandaris (toddy tappers), Agris (salt traders) and Kunbis (cultivators) and at its south point, opposite Bandra island, lived a small colony of fisherfolk and cultivators (Koliwada).
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The ships were discovered in 1995 by Jean-Pierre Génar, a diver who was exploring the area around two "ship- traps", large rocks which are only visible at on very low tides, at the north and south end of the natiere reef. It appears that the reef and surrounding sands had provided excellent protection for the wrecks, even though their remains were scattered over 1000metres squared. Ten excavations took place between 1999-2008.The ships were identified as the Dauphine and the Aimable Grenot.
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The Banc is a dangerous oval-shaped reef long and wide that becomes exposed only at low tides, with the exception of some rock formations in the southern part of the reef. The rocks are generally in height; the largest is South Rock, with a height of , similar to a boat under sail. In the eastern part of the reef there are some sandy cays, in height covered with grass and small bushes. The entrance into the central lagoon is possible from a south-southeastern direction.
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Although not recorded as permanently inhabited in 2001 according to the 2011 census there was a single inhabitant both at that time and in 2001 when the total for the islet was included with that of Orkney itself. There built structures are at the north end and a stony causeway allows for vehicular access at low tides. A small wind turbine has been erected on the west coast. The SS Gnome ran aground on 23 January 1857 while entering Stromness harbour "on the Holme side".
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The final report recommended three alternatives for action: to continue operation "as-is", to continue operation without the gates, or to eliminate gate leakage and amend the operation protocol. The third alternative was chosen two years later, but did not substantially improve fish migration as expected. The provincial government decided to open the gates between 15 April and 7 July 1988, to allow fish to migrate up the stream. This was repeated from 26 September to 31 October 1988, and in the spring of 1989 and 1990 during low tides.
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The habitat is traversed by many narrow tidal channels forming small to large islands. Tigers readily cross these islands and human-tiger interactions are common. The estimation of tiger population in Sunderban, as a part of the all India tiger estimation using the refined methodology, could not be carried out owing to the unique habitat and obliteration of evidences due to high and low tides. Phase-I data collection has been completed and process is on for tiger estimation using a combination of radio telemetry and pugmark deposition rate from known tigers.
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These effects can be seen to lower both the high tide and low tides which means that the water level will be lower in total. The number of blades and load on the system however does affect the tidal range vastly. Tidal range can be reduced up to 42% with observations of the densest farms which can cause destruction to 32% of the areas around them, but it can be controlled. Damage can be reduced to 19% by using a two-rotor spaced turbine and only 5.4% with five-rotor spaced turbines.
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The area was surveyed in the 1880s by the Royal Navy but it was considered very inferior to Walvis Bay and no development took place. Occasional sealing vessels used the bay as an anchorage, instead of Walvis Bay, and there were some temporary settlements used by seasonal fishermen catching snoek (Thyrsites atun). In the 1930s an ambitious project was started to build a guano island in the lagoon using sand pumps imported from the Netherlands. Unfortunately jackals could cross to the island at low tides and chased the birds away.
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In the spring and summer months, the island is used for grazing livestock and horseback riding excursions.ipernity.com The highest point is 3.6 m above the sea level. At low tides the water level is shallow enough to enable passage to the island of Muhu by foot. Võilaid, along with other areas in Estonia such as: Manilaid, Kihnu, Ruhnu, Harilaid, Käina, Kassari, Saarnaki laid, Saastna, Salmi, Penijõe, Põgari-Sassi, Haeska, Kumari, Tahu were selected by the LIFE-Nature project's "Boreal Baltic Coastal Meadow Preservation in Estonia" as having the most viable coastal meadows in the country.
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The Pismo clam was named for the long, wide beach where so many were once found, once in such abundance that they were harvested with plows. Clamming once drew thousands of clammers to Pismo during low tides, and is still legal; however, due to over-harvesting by humans and the protected sea otter (which feasts on clams), few clams are to be found.Clam Calamity; The Tribune News - San Luis Obispo; 2008. Pismo Beach adopted the name "Clam Capital of the World" in the 1950s, though this motto is no longer used.
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In the 1937 he constructed his first astronomical clock, showing standard and Greenwich time, all solar and lunar cycles and phases, the Julian calendar, high and low tides and sunset/sunrise. The firmament is visualized on a two- dimensional dial, holes are drilled for the larger stars and the dial is illuminated from behind to make the stars visible in the evening. A switch allows the clock to be run forward and backwards in time. The clock is controlled by Sørnes' own invention, an electromagnetic balance wheel escapement.
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When the sun, earth and moon are aligned in a straight line (at new and full moon), their tidal effects combine, producing the particularly high and low tides called spring tides. When the sun is at right angles to the moon, the effects are partially cancelled, producing the small tides called neap tides. New Zealand has a relatively small tidal range, usually less than two metres. However, some of the larger harbours on the west coast of the North Island, in particular the Kaipara, experience significant currents as the tides rise and fall.
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Initial lightly loaded freight services started in 1936, but a full service for freight did not begin in earnest until 1937, with the Night Ferry passenger service starting a year earlier in 1936.The Night Ferry was suspended in September 1939 due to the Second World War and was resurrected in 1946. It ceased running completely in 1980. Due to the height difference between high and low tides, which could be as much as in Dover Harbour, a separate dock was created which was protected against the extremes of tidal difference.
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In Roman times the reclaimed area which is now Canvey Island was joined to the mainland by a road providing access from Benfleet at low tides to Camulodunum (Colchester) and Londinium (London). The A130 road from Sadlers Farm roundabout to Canvey Island follows the route of the original Roman road. Its construction in 1971 brought to light a number of artifacts dating back to the early settlements in the area. The name of the town originates from the time of the Saxon settlers in the 5th Century, when the area was largely marshland.
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West York Island is covered with low vegetation and scrub. Outcrops are visible on the southern and eastern portion of the island during low tides. It is a sanctuary for giant sea turtles that lay their eggs on the island all year round. The high salinity of the groundwater on the island retards the growth of introduced trees like coconuts, ipil-ipil, and other types; only those plants indigenous to the area, (mostly beach types of plants), thrive and survive the hot and humid condition, especially during the dry season.
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This position guarantees a unique color of the ocean surrounding the beach. It is bluer during the low tides and it turns greener during the high tides when the ocean waters meet the lake waters. This beach is part of the Roteiro region and you can get there by boat from Barra de São Miguel or by car driving through a private property. This is a very popular tourist site with many entertainment options such as boat trips to nearby "natural aquarium" or beaches such as Barra de São Miguel.
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The bulk carrier Nord Angel breaking ice on the Hudson The lower Hudson is actually a tidal estuary, with tidal influence extending as far as the Federal Dam in Troy. There are about two high tides and two low tides per day. As the tide rises, the tidal current moves northward, taking enough time that part of the river can be at high tide while another part can be at the bottom of its low tide. Strong tides make parts of New York Harbor difficult and dangerous to navigate.
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A study done by Elliot & Mariscal in the region of Madang, Papua New Guinea found that all of the H. magnifica anemones that were censused were occupied by A. percula and A. perideraion. A. percula generally occupies anemones that are near shore, while A. perideraion occupies anemones that are more offshore. Anemonefish do not occupy anemones if they are in shallow water or if they are too small. Shallow waters are not an inhabitable environment for A. percula because of the lower salinity levels, increased temperatures, and exposure during low tides.
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Tides are the rise and fall of sea levels caused by the combined effects of gravitational forces exerted by the Moon, Sun, and rotation of the Earth. In 1867 the United States Coast Survey started printing annual tide tables to support safe and effective maritime, coastal, and defense activities. Before long, these tables showed the times and heights of high and low tides to the nearest minute and tenth of a foot, respectively. Tables were printed for a year at a time and distributed prior to the start of the year.
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Cruises are operated by several companies along with dive boats which may visit the atoll on expedition tours. Visits to the island by people other than the scientists and staff of the SIF are strictly controlled and only guided tours are provided with prior permission. , an average of 900 tourists visit the atoll a year. Within the atoll, paved walking paths exist from the village of La Gigi, which leads to a promontory from where scenic views of the large lagoon (during low tides) and the mangrove species are seen.
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Turner and Constable both made paintings of the pier, King William IV landed on it, and it was even the subject of a song. The Chain Pier co-existed with the later West Pier, but a condition to build the Palace Pier was that the builders would dismantle the Chain Pier. They were saved this task by a storm which destroyed the already closed and decrepit pier on 4 December 1896. The remains of some of the pier's oak piles can still be seen at the most extreme low tides.
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Once pilgrims enter the cave Lord Ganesha, Lord Vishnu, and Goddess Lakshmi can be sight then five could visible in different sizes in middle of the sea water, this is the very significant feature of the temple and above the rock the Shiva Linga Seshanag was carved to look out for the Shiva Linga. These lingas are generally submerged in the sea during high tides and only during the low tides chance to visible. This temple is also known as 'Seashore Temple' as Shiva Linga is situated on the seashore.
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The coastline of Teän consists of a number of bays and sandy beaches which link to offshore rocks and carns at low tide. The western part of the island has low-lying ground linking granite carns, and field boundaries from the Romano-British period can be seen at extreme low tides. One of the carns, Old Man, has an early structure, a Bronze Age entrance grave, as does Great Hill in the east of the island. Roman type brooches have been found in a grave on Old Man.
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The VOC Amsterdam as visible at very low tide. The wrecksite was designated under the Protection of Wrecks Act on 5 February 1974. The VOC Ship Amsterdam Foundation started researching the wreck, followed by major excavations in 1984, 1985 and 1986, during which huge numbers of artefacts were found. Although the wreck is submerged in the sand and mud of the beach (and is even visible at very low tides), much of the excavation was done by divers, for whom a small tower was constructed near the wreck.
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Photograph of Guardi's Regatta in Venice at the Frick Art Reference Library. Its splendid architecture, artworks, landscapes, gondolas, the alternance of high and low tides, the reflections of light and colors, and the unusual daily scenes in a city living on water, make of Venice and its islands a paradise for photographers both professional and amateur. Fulvio Roiter has probably been the pioneer in artistic photography in Venice, followed by a number of photographers whose works are often reproduced on postcards, thus reaching a widest international popular exposure.
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Coastline looking towards Sully Island The St John Baptist Church, known as Sully Church, is a Grade II listed building. The hamlet of Swanbridge includes a caravan park and holiday camp and The Captain's Wife public house, which opened in 1977 after a conversion of several quayside cottages. There is foot access at low tide from the pub car park to Sully Island but tides are high and fast - and therefore dangerous. There is an access time of only three hours each side of low tides and extreme care is advised.
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The rule is a rough approximation only and should be applied with great caution when used for navigational purposes. Officially produced tide tables should be used in preference whenever possible. The rule assumes that all tides behave in a regular manner, this is not true of some geographical locations, such as Poole Harbour or the Solent where there are "double" high waters or Weymouth Bay where there is a double low water. The rule assumes that the period between high and low tides is six hours but this is an underestimate and can vary anyway.
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Appletree Cove is a bay and estuary of Puget Sound on the Kitsap Peninsula in the U.S. state of Washington. The cove is fed by Carpenter Creek; its estuary is a tidal flood zone that fills and empties at high and low tides. Appletree Cove was named "from the numbers of that tree which were in blossom around its shores" by Charles Wilkes who surveyed the area on April 9, 1841, on the Wilkes expedition. Reportedly these Pacific crabapple trees were cleared by Benjamin Bannister after settling at the bay in 1874.
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The beach is set into a small cove formed by recesses in the low cliffs and rock formations. The beach also includes several further sandy recesses running eastwards, some of which are only accessible during the very low tides. These smaller beaches are also known as Praia do Spout Silvas, a name rarely used. The western part of Balaia can be accessed via a set of wooden boardwalks and steps which lead down the side of the cliffs from the Holiday developments that lay to the north of this part of the shoreline.
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Several people were injured in New Jersey by the rough surf, and over 150 people required rescue in Cape May. Waves of in Atlantic City forced beaches to close for the first time since Hurricane Gloria in 1985, and beaches were closed across the region for about five days. There was minor tidal flooding in the state due to astronomically low tides, although extensive beach erosion occurred after a week of strong waves; in Ocean City, the storm eroded about of beaches, leaving behind cliffs. Five people drowned in the state due to rough surf.
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The high pressure at the centre of an anticyclones pushes down on the water and is associated with abnormally low tides while low-pressure areas may cause extremely high tides. A storm surge can occur when high winds pile water up against the coast in a shallow area and this, coupled with a low pressure system, can raise the surface of the sea at high tide dramatically. In 1900, Galveston, Texas experienced a surge during a hurricane that overwhelmed the city, killing over 3,500 people and destroying 3,636 homes.
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The beach can only be reached at high tide by boat; but in low tide it can be reached at beach level from the headland from Whitecliff Bay. At a certain time of the year, on very low tides, it is possible to reach Horseshoe Bay from Sandown Bay. Walking to the bay should only be attempted on an ebb, a falling tide. This entails some scrambling and a short traverse even at extreme low tide across the submerged base of the cliff between an old collapsed cave and the nostrils.
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The cape protrudes deep into Resurrection Bay, compelling vessels entering the bay to double Caines Head prior to reaching the port of Seward. Moreover, the cape features a steep elevation of , an extremely rugged shoreline, and a difference between high and low tides, effectively obstructing a marine landing. This advantageous position to lock the entrance into the bay and the port of Seward was occupied by US Army forces in July, 1941, months before the Pearl Harbor Attack. Seward port was considered critical to the war time logistic, as it was an ice-free port at the south terminus of Alaska Railroad.
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Along some shorelines, the solar tide is the only important tide, and ordinary 12-hour clocks suffice since the high and low tides come at nearly the same time every day. Because ordinary tidal clocks only track a part of the tidal effect, and because the relative size of the combined effects is different in different places, they are in general only partially accurate for tracking the tides. Consequently, all navigators use tide tables either in a booklet, computer or digital tide clock. Analog tide clocks are most accurate for use on the Atlantic coasts of America and Europe.
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NASA satellite image of the Mahia Peninsula, showing Portland Island close to the peninsula's southern tip Portland Island, also called Waikawa, is a small island off the southern tip of the Mahia Peninsula on the North Island of New Zealand. It is used for sheep farming. The area of the island fluctuates rapidly between high and low tides due to a shelf of rocks surrounding the east, north and west coast of the island. During low tide the area of the island can grow up to 3 km2, while during high tide it shrinks down to only 1.4 km2.
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However, due to the narrow entrance to the Loch, the tide rises more quickly than the water can flow into the Loch. Thus there is still considerable turbulence at high tide caused by flow into the Loch. Thus, unlike most situations where slack water is at high and low tides, in the case of the Falls of Lora slack water occurs when the levels on either side are the same, not when the tidal change is at its least. As a result, the tidal range is much greater on the coast than it is inside the loch.
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Richardson Bay, for example, exposes one third of its areal extent as mudflat at low tide, which hosts a productive eelgrass expanse and also a large shorebird community. Mammals such as the Harbor seal may use mudflats to haul out of estuary waters; however, larger mammals such as humpback whales may become accidentally stranded at low tides. Note that normally humpback whales do not frequent estuaries containing mudflats, but at least one errant whale, publicized by the media as Humphrey the humpback whale, became stuck on a mudflat in San Francisco Bay at Sierra Point in Brisbane, California.
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Wilmington lies along the Fall Line geological transition from the Mid-Atlantic Piedmont Plateau to the Atlantic Coastal Plain. East of Market Street, and along both sides of the Christina River, the Coastal Plain land is flat, low-lying, and in places marshy. The Delaware River here is an estuary at sea level (with twice-daily high and low tides), providing sea-level access for ocean-going ships. On the western side of Market Street, the Piedmont topography is rocky and hilly, rising to a point that marks the watershed between the Brandywine River and the Christina River.
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Burnham was seriously affected by the Bristol Channel floods of 1607, with the present curved concrete wall being completed in 1988. There have been many shipwrecks on the Gore Sands, which lie just offshore and can be exposed at low tides. Lighthouses are hence prominent landmarks in the town, with the original lighthouse known as the Round Tower built to replace the light on the top of the 14th-century tower of St Andrews Church. The pillar or High Lighthouse and the low wooden pile lighthouse or Lighthouse on legs on the beach were built to replace it.
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While the ride, which some 200,000 people a year take, is only 15 minutes long, it is narrow and winding. The channel has increasingly become more difficult to navigate at low tide since 1996 due to sand migration in the estuary and a series of hurricanes. Shoaling in the channel has been constant since ferry operations began in the early 1960s and has worsened in recent years due to hurricane activity, particularly in the half-mile stretch of the channel nearest the island. During low tides, the park has used 11-passenger skiffs to ferry passengers rather than its , 28-passenger boats.
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The boundaries of the Hawaii Marine Laboratory Refuge surrounding the island start at the high-water mark on the island and go to twenty-five feet beyond the outer edges of the reefs, including sand and seawall shoreline, where coral and sand calcium carbonate reef flats are exposed at low tides. High coral and macro-algae flourish at shallow-depth zones while the deep habitats are characterized by sediment with low coral cover and colonized by slumping from upper reef zones. Within Kaneohe Bay are sheltered areas. Man-made impacts in the area include dredging, sewage release and freshwater flooding.
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There are three basic types of stromatolite, the sub-tidal (always under water) columns and the inter-tidal (exposed to air and sun during low tides) anvil or mushroom shapes depicted in most pictures. Algal mats form in the inter-tidal region and appear as areas of flat black mud flats but are actually living stromatolite. At Hamelin Pool there is an interpretive boardwalk for tourists to venture out and examine the stromatolite structures. This is the only access area for the general public because of the fragile nature of the environment in the Hamelin Pool.
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The two high tides a day alternate in maximum heights: lower high (just under three feet), higher high (just over three feet), and again lower high. Likewise for the low tides. When the Earth, Moon, and Sun are in line (Sun–Earth–Moon, or Sun–Moon–Earth) the two main influences combine to produce spring tides; when the two forces are opposing each other as when the angle Moon–Earth–Sun is close to ninety degrees, neap tides result. As the Moon moves around its orbit it changes from north of the Equator to south of the Equator.
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At the time of writing of the old Gazetteer of Thana in 1882, these islands could be reached during low tides by walking across the tidal inlets in between, except for the island of Dharavi in present-day Gorai (not to be confused with the slum near Mahim), which had to be reached by a boat. These are no longer separate, being joined to Salsette via reclamation. The highest point is the conical peak of Kanheri (467 metres) in Borivali National Park on the northern reaches of the island. This national park is the world's biggest within city limits.
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In many parts of the world the tides approximate to a semi-diurnal sine curve, that is there are two high- and two low- tides per day. As an estimate then each period equates to an hour, with the tide rising by 1, 2, or 3 twelfths of its total range in each hour. In places where there is only one high and one low water per day, the rule can be used by assuming the steps are 2 hours. If the tidal curve does not approximate to a sine wave then the rule cannot be used.
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Drivers are cautioned however to be aware of soft sand areas where cars can get stuck and to be aware of incoming tides which can move in rapidly and cover most/all of the beach. There may be a Beach Warden on duty and information about full and low tides may be displayed. Drivers on the beach are required to drive very slowly at 15 km/h (10mph) and to be on the lookout for children and other users of the beach. A soil erosion study of the beach at Rossnowlagh, known officially as Belalt Strand, has been made.
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The effect of this spillage could then raise the ambient bed as it is collected on the ocean floor, exposing it to the dangers of the barge's prop-wash. These effects would pose a more significant effect during low tides, as outlined in the continuing section on the remaining eelgrass beds. By using barge ships as their main form of transport, Glacier Northwest is also putting South Maury Island's fragile habitat at an extremely high risk for oil spills. An oil spill would demolish the near shore habitat, which would affect the fish, birds, and sea mammals living throughout the Puget Sound.
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However, bad weather and low tides prevented the first ships from docking, and this set the scene for future visitors – the pier was not long enough to cater for landings at low tide. Although there was a regular service from Bristol, fewer steamers were calling than had been intended, and plans were drawn up to extend the pier further out into the bay. A cliff railway was also mooted, like the nearby Lynton and Lynmouth Cliff Railway, to connect with the Lynton & Barnstaple Railway, although neither plan ever came to fruition. On 12 January 1899, the pier was severely damaged by a storm, with another a year later.
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Clam Gulch is visited by tourists who would participate in clam digging on the beach during low tides; however, due to a population crash this fishery has been closed since 2015.Eastside Cook Inlet beaches closed to clamming Alaska Department of Fish and Game, 2/24/2015 In the winter there are many "poker runs" by snow- machine enthusiasts, and in the past Clam Gulch has been the half-way point for the Tustumena 200 Sled Dog Race. Clam Gulch State Recreation Area is a park on the bluffs on Cook Inlet. It has over 100 campsites, a rough beach access road, and a staircase down the bluff to the beach.
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There are caves towards the western end. The beach is mostly a storm bank of stones and gravel above Mean High Water with a large mostly sandy beach appearing when the tide is lower. It was described in 1844 as "a fine sandy beach, a few miles in length, and well-adapted for sea- bathing from the shallowness of the water for a considerable distance from the shore" and more recently as "relatively unspoilt" when compared to the tourist honeypots nearby. An area of submerged alder, oak and willow forest 100 m wide and 2 km long and dating from 4000/6000 years ago can be seen at low tides.
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Tidal barrages make use of the potential energy in the difference in height (or hydraulic head) between high and low tides. When using tidal barrages to generate power, the potential energy from a tide is seized through the strategic placement of specialized dams. When the sea level rises and the tide begins to come in, the temporary increase in tidal power is channeled into a large basin behind the dam, holding a large amount of potential energy. With the receding tide, this energy is then converted into mechanical energy as the water is released through large turbines that create electrical power through the use of generators.
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It is believed that formerly the land extended far to the north of its present range and that it has encroached three or four miles to the south during the last 1000 or 1200 years. A small masonry platform on which are numerous lingas or symbols of Shiva is said to be visible on very extraordinary low tides. On the sea-coast, about three-fourths of a mile from Balachari, is a temple of Baleshvar, specially worshiped by Rabaris and Bharvads, but also reverenced by other castes. Near the temple is a pipal tree called the Moksh Piplo and said to have been there since the time of Krishna.
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A tide table for Monterey Bay Aquarium Tide tables, sometimes called tide charts, are used for tidal prediction and show the daily times and levels of high and low tides, usually for a particular location. Tide heights at intermediate times (between high and low water) can be approximated by using the rule of twelfths or more accurately calculated by using a published tidal curve for the location. Tide levels are typically given relative to a low- water vertical datum, e.g. the mean lower low water (MLLW) datum in the US.Tidal Datums And Their Applications, NOAA Special Publication NOS CO-OPS 1, Silver Spring MD, June 2000.
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Evidence of the old bridge can still be seen from the right side of the new bridge crossing from loughor, a parapet jutting out into the river which is now a seating area and support foundations can also be seen in the river bed at low tides. If travelling over the bridge east, you will enter the county of Swansea and South Wales when leaving the bridge. If travelling west, you will enter the county of Carmarthenshire and the West Wales area when leaving the bridge. When leaving the bridge if heading west, the road signs change from English/Welsh to Welsh/English (Welsh written before English).
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The dock has had since its excavation a high tidal range, with today a maximum recorded rise and fall of four metres. Furthest inland the bed of the inlet is about one metre above the low-tide mark of the Thames so is empty at many low tides. It was often at low tide slightly watered before 1894 as a final head of water along the Thames is maintained above Richmond footbridge and more surface water drains in Southwark ran into it. The maximum high tide is regulated by use of the Thames Barrier which usually enables the water to stay more than below the embankments.
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The Royal Suspension Chain Pier (1822–23, by Captain Samuel Brown ) became Brighton's first "effective focal point" after it became a fashionable seaside resort, but demolition was already under consideration by the time it was destroyed by a storm in 1896. Only some oak foundations remain, and these are only visible at low tides. Brown's iron structure had Egyptian Revival towers at the landward end, and the landing stage was of Purbeck stone. Hove's original manor house was pulled down in 1936, despite its last owner offering it to the local council for less than its market value. John Vallance built the Georgian-style L-plan house in the late 18th century.
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Three-dimensional drawing of the Viking sundial (stamp illustration) with a conical vertical gnomon and its shadow, the endpoint of which touches the hyperbola scratched into the horizontal wooden disc During the Viking Age (900-1200 AD) Vikings were the dominant seafarers of the North Atlantic. One of the keys to their success was the ability to navigate skillfully across the open waters. The Vikings were experts in judging speed and wind direction, and in knowing the current and when to expect high and low tides. Viking navigational techniques are not well understood, but historians postulate that the Vikings probably had some sort of primitive astrolabe and used the stars to plot their course.
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On January 24, 2018, reporter Ben Raines claimed to have discovered the wreck of the Clotilda in the lower Mobile–Tensaw Delta, a few miles north of the city of Mobile. Record low tides, caused by a storm system that produced the January 2018 North American blizzard, had left parts of a wreck visible above the mud. Based on their preliminary review, a team of archeologists said, "based on the dimensions of the wreckage and its contents... the remnants were most likely those of the slave ship." People in Africatown began to discuss what should be done with the wreckage if it is the Clotilda, and how best to tell their story.
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A view looking north in La Jolla, showing Seal Rock on the left and the north end of Shell Beach in the mid-distance on the right, 2007 A closer view of Shell Beach, August 2007 Shell Beach, La Jolla is a small beach in La Jolla, a community of San Diego, California, United States. The beach is accessed via a flight of concrete steps that start at the south end of Ellen Browning Scripps Park. This beach is located immediately north of Children's Pool Beach, south of Boomer Beach, and also south of La Jolla Cove. During extreme low tides, the southern end of Shell Beach has an interesting tidepool-like area, with many marine creatures visible.
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When on land and heating up, the higher heart rate of about 100 beats per minute aids in spreading the heat throughout the body. To conserve heat during the night, they often sleep closely together in groups that may number up to 50 individuals, while others sleep alone below plants or in crevices. In general, the time of each foraging trip is directly related to the water temperature; the colder the water the shorter the foraging trip. Additionally, marine iguanas that forage in or near the intertidal zone prefer to do so during low tides, allowing them to remain on land (on rocks exposed by the tide) or return to land faster.
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It is possible to travel along the shore from the mouth of the Otter river to Ladram Bay near Otterton at very low tides but the beach is mostly covered with massive boulders of fallen sandstone, many very slippery because the more ferruginous nature of the rocks encourage algal growth. The embayments mean that there is always a risk of being cut off between headlands by even a slight rise in local sea level or weather conditions such as a wind blowing on shore. The most critical point is at Danger Point itself - hence its helpfully descriptive name! There are four other headlands which make this 4 km (3 mile) scramble continuously anxiety-provoking.
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Symsagittifera roscoffensis lives in the tidal balancing zone, preferentially in a sandy substrate, poor in organic matter. The accumulation of the latter generates reduced, hypoxic or anoxic conditions, which promote the development of anaerobic bacteria releasing compounds such as hydrogen sulfide (H2S) incompatible with the oxygen requirements of the worm. Circatidal rhythms (dynamic alternation of high and low tides) influence the behavior of these animals that migrate vertically at each tide: at rising tide the colonies sink into the sand, they rise to the surface at the beginning of the ebb tide and become visible in interstitial seawater flowing. Sand particle size is an important factor because it determines the ease of vertical movements of the worms.
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The passage, which was about 18 to 24 inches in depth, could be navigated on foot or horseback during low tides to travel across the opening of Nueces Bay into Corpus Christi Bay. White settlers discovered the road in the 1860s, and it became a common way to pass from Portland to Corpus Christi via buggy, although its jagged course had to be marked with posts and horses would sometimes fall off the beds and drown. A wooden causeway connecting Portland and Corpus Christi was first constructed in 1915, but was repeatedly rebuilt and destroyed by several storms. A permanent concrete bridge was erected in the 1950s, and a double lane was added in 1988.
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It is characterized by severe climate, low water salinity, and a scarcity of flora, fauna and human population, as well as shallow depths (mostly less than 50 m), slow sea currents, low tides (below 25 cm), frequent fogs, especially in summer, and an abundance of ice fields which fully melt only in August–September. The sea shores were inhabited for thousands of years by indigenous tribes of Yukaghirs, Chukchi and then Evens and Evenks, which were engaged in fishing, hunting and reindeer husbandry. They were then absorbed by Yakuts and later by Russians. Major industrial activities in the area are mining and navigation within the Northern Sea Route; commercial fishing is poorly developed.
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Clarke, p 91 Goreham finally became aware of the rebel presence on November 4 when a boat carrying a relief party and supplies for the outpost returned early with the news.Clarke, p 100 By this point Eddy's force had effectively cut all overland communications from the fort, making it impossible to send reports of the invasion to Halifax. Meanwhile, winter supplies, plus arms and ammunition, for the garrison had arrived on the sloop Polly, escorted by the frigate HMS Juno, on October 31; Juno departed for Halifax on November 3.Clarke, pp 92, 98 Polly was brought up a creek near the fort and unloading began with the ship lying in the mud at low tides.
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While bottlenose dolphins can be seen off the point throughout the year, the chances of seeing them increase when their food supply increases, the peak times being when salmon are returning towards the two main rivers (the Ness and Beauly) which feed into the Moray Firth. The salmon come in with the tidal current which, once the tide starts to come in, can be extreme. If planning a trip, find tide details and pick days with midday low tides with the largest difference between low and high tide (spring tides, avoid the neap tides). An unofficial "jungle telegraph" system operates round the Rosemarkie campsite and point in June and on into August with details of the latest sightings only a brief conversation away.
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Even during low tides, the waves on the beach are very strong, with no reefs in the waters. A black lava formation abuts the west bank near the mouth which is named Ke-alelo-O- Pilikua, meaning "tongue of Pilikua". In the hills of the river valley there is a rock formation known to the Hawaiians as Ma’ina-kehau, which is a very large boulder resembling a man with a "grey body and white head". There is natural fall midway along the river course where there is a carved flat rock formation, said to have been brought from Wainiha by the Menehune. This rock is called Pa-na’nana’a, meaning "protruding dish"; one half of this rock is of a black colour and the other half is grey.
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There is always some flow from the river into the bay. However, the lower Ipswich and Plum Island Sound, as well as the lower four other rivers flowing into it, and the much larger Merrimack River to the north, are all tidal estuaries, so the water is brackish from mixing ocean born saltwater inland during flood tides, and the lands immediately along the banks, where not inundated some of the time, are nonetheless saturated by brackish water and support only hearty plants capable of tolerating the waters such as salt marsh hay. High tides cover all of Great Marsh and the flood plains of the lower rivers. Low tides uncover the mud flats, reducing the deep channels to small streams some often small enough one can hop across to fish elsewhere.
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Wreck of the schooner Reporter {San Francisco Call, March 28, 1902} thumb Left in place at extreme low tide level in 1878, what is left of the wreck of King Philip is usually completely covered in sand. Sometimes, as the profile of the sand on the beach shifts and changes, the timbers reemerge and are visible during low tides. The wreck was partially visible when the schooner Reporter wrecked on the same site on March 13, 1902. Contemporary accounts noted that Reporter was "fast digging her own grave alongside the bones of the King Philip, whose ribs are still seen ..." The wrecks of both ships were buried in 1910 when bulldozing of the sand dunes to build the Great Highway pushed large amounts of sand onto the beach.
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Bay muds often have a high organic content, consisting of decayed organisms at lower depths, but may also contain living creatures when they occur at the upper soil layer and become exposed by low tides; then, they are called mudflats, an important ecological zone for shorebirds and many types of marine organisms. Great attention was not given to the incidence of deeper bay muds until the 1960s and 1970s when development encroachment on certain North American bays intensified, requiring geotechnical design of foundations.Farzad Naeim, The Seismic Design Handbook, Kluwer Academic Publishers, (2003) Bay mud has its own official geological abbreviation.Floyd Fusselman, Environmental Concerns: Learn the Acronyms, Trafford Publishing, Victoria, B.C. (2002) The designation for Quaternary older bay mud is Qobm and the acronym for Quaternary younger bay mud is Qybm.
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The Tillamook Herald stated that this was a "rank injustice … we are solely dependent upon boat service to make train connections at Wheeler." The Herald further argued that "unless some definite action is taken soon it will be utterly impossible for the Juneta to make her run owing to the extreme low tides in June …" In June 1916, Juniata was used to assist in floating the 90 foot long central span of the bridge across the north fork of the Nehalem River. During the summer of 1920, visitors to Neahkanie and Manzanita, Oregon could reach these beaches from the Portland rail connection at Wheeler by a trip down the Nehalem on the Juneta, which made five trips a day on this route, under the command of Capt. William Anderson.
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As examined by Jennifer E. Angel in her paper, hermit crabs are known to inhabit different shells throughout their lifetimes, switching from shell to shell as a result of growth. Increased growth means increased shell size, because inhabiting a shell that is too small for the crab's body results in an increase in predation and desiccation. Pagurus acadianus are often found inhabiting the shells of Littorina littorea, Thais lapillus, Buccium undatum, and Polinices heros, as concluded by William C Grant, Jr. Larger individuals are often located on elevated areas within the rocky intertidal, which is defined as the area between the highest high tides and the lowest low tides. This area is one of much scientific exploration, due to its accessibility and the adaptations of the organisms that live there.
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The Maersk container ship MV Sea-Land Meteor ran aground near to Vlissingen during the storm before being refloated on the next high tide. Authorities later attributed the grounding to navigational error and low tides. On the roads the A6 road was closed for some time near Sint Nicolaasga after a truck was blown over, this was repeated on the A1 motorway where traffic between Hengelo and Apeldoorn was restricted to the hard shoulder. The Dutch Traffic Information Service (Verkeersinformatiedienst) reported that some 25 trucks and trailers overturned on the main roads across the Netherlands, the most in one day since 2007, when the Kyrill (storm) saw 30 blown over in significantly stronger winds, though conditions were not as bad as during the Burns Day storm 25 January 1990 when 130 articulated lorries, caravans and trailers were blown over on major roads.
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The dates of spring tides and neap tides, approximately seven days apart, can be determined by the heights of the tides on the classic tide tables: a small range indicates neaps and large indicates springs. This cycle of tides is linked to the phases of the moon, with the highest tides (spring tides) occurring near full moon and new moon. However, successive (semidiurnal) tides are linked to the Moon's orbital period, thus they are approximately 24/27.3 hours later each day or about 50 minutes but many other observations and considerations are required to develop accurate tide tables. On the Atlantic coast of northwest Europe, the interval between each low and high tide averages about 6 hours and 10 minutes, giving two high tides and two low tides each day, with the highest tides about 2 days after full moon.
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The loss of velma areas in the Lagoon of Venice has been occurring for more than two centuries. From the early 19th century the combined saltmarsh area had decreased form 155 km2 to 40 km2.Mosevenezia, ecosystem, the Venice Lagoon This has also involved a loss of velma areas because many of them surround the saltmarshes. Velma areas are often under bathymetric (depth) pressure, which makes them less likely to emerge at low tides, leading to loss of stability and potential loss of their ecological function. 2011 Plan -Mitigation measures This has been caused by infrastructural works carried out in the last two centuries. In the 19th century breakwaters were built at the lagoon inlets to stabilise their shape and orientation and to intensify the inflow of sea current in order to create conditions for deepening them and the channels which start from them.
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Large areas of the lagoon became exposed above water during low tides and the inlets which provided communication to the sea became poorly navigable because of an accumulation of sand brought by the sea currents. In the early 17th century Benedetto Castelli, an engineer, argued that the former was due to the scarcity of the inflow of freshwater into the lagoon caused by the diversion of the River Brenta and that the latter was due to the sand brought by the sea current no longer being counteracted by the freshwater flowing into the lagoon from the opposite direction. He proposed to bring back the waters of the Brenta in a controlled manner so as to bring back the inflow of water into the lagoon but in a way that would prevent silting. He was also opposed to the planned diversions of the River Sile and four other mentioned rivers.
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In 1997 Chan began a relationship with the playboy Taiwanese investment tycoon and celebrity Hwang Jen-chung (黃任中, also credited as Wong Yam-Chung (黄蔭衷) in Cantonese whom she met in 1993, and was 33 years older than she was. She moved to Taipei to cohabit with Huang until they broke up in early 1999. After her death, in a media interview Huang revealed that Chan had been involved in drug abuse and sorcery since 1998; Chan did so in anticipation to soothe herself and win his heart back during their emotional low tides.人物风流：股市大亨黄任中与陈宝莲的爱恨纠葛 “情敌”小潘潘曝料：陈宝莲生前曾“养小鬼” Between 1998 and 2001 Chan was involved in a chain of negative news.
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There have been numerous minor tsunamis caused by significant large earthquakes. Examples of these are the 1848 Lower Wairau Valley quake, 1922 Vallenar earthquake, 1922 Rangiora quake, 1923 Kanto quake, 1950 Bay of Plenty quake, 1952 Severo- Kurilsk tsunami, 1964 Alaska earthquake, 1976 Kermadecs, 1977 Tongo, 1981 Maquare Ridge, 1982 and 1986 Kermadecs, 1994 Kuril Islands earthquake, 1995 Kobe, 1998 Balleny Island, 1998 Papua New Guinea earthquake, 2001 southern Peru earthquake and 2011 Tohoku earthquake and tsunami.Chapter 4 - Tsunami and storm surge hazard in New Zealand; Goff, Nicol, and Rouse; The New Zealand Coast; Dunmore Press; 2003; page 86; The effect of the 1923 Kanto earthquake was reported in local newspapers as abnormal tides on 5 September.Abnormal low tides, Evening Post, Volume CVI, Issue 57, 5 September 1923, Page 6 The 1952 Severo-Kurilsk tsunami reached New Zealand with a wave height of just under 1 metre.
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As a result, there are two high tides, and two low tides in about 24 hours. Since the Moon is orbiting the Earth in the same direction of the Earth's rotation, the high tides occur about every 12 hours and 25 minutes; the 25 minutes is due to the Moon's time to orbit the Earth. The Sun has the same tidal effect on the Earth, but its forces of attraction are only 40% that of the Moon's; the Sun's and Moon's interplay is responsible for spring and neap tides. If the Earth were a water world (one with no continents) it would produce a tide of only one meter, and that tide would be very predictable, but the ocean tides are greatly modified by other effects: the frictional coupling of water to Earth's rotation through the ocean floors, the inertia of water's movement, ocean basins that grow shallower near land, the sloshing of water between different ocean basins.
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The teeth are composed of goethite, an iron-based mineral, woven in a particular way into grouped 1μ thick bundles. Science recorder, Unassuming aquatic snail possesses the strongest teeth on Earth]N. W. Runham, P. R. Thornton, D. A. Shaw, R. C. Wayte The mineralization and hardness of the radular teeth of the limpet Patella vulgata L.; Zeitschrift für Zellforschung und Mikroskopische Anatomie 15. August 1969, Volume 99, Issue 4, pp 608-626 Many limpets create a home "scar" on the rock to which they always return between tides, the scar becoming a perfect fit even for the always growing cone-shaped shell and providing excellent protection from predators as well as helping to prevent dehydration, though dehydration remains one of the greatest risks to which these molluscs are exposed and may be why they only survive in temperate waters, not tropical ones where they simply become too hot during low tides.
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During the navigation improvements of 1803–1811, a new lock cut was made to bypass a large meandering loop of the River Hull around Struncheon Hill. William Chapman, who looked after the works, built the lock to the standard dimensions of the rest of the navigation – to take vessels long, by wide. This is a standard known for Yorkshire Keels, however on further investigation it seems the lock was built to longer dimensions and in 2009 Michael Askin took a Royalty Class Narrow Boat Victoria of in length through the lock – though the boat would only fit pointing upstream due to low water levels not allowing enough depth over the top cill. Lower chamber sluice, and behind, the pumping station The lock was originally built as a single lock, but like Snakeholme lock, it was found that at low tides there was not enough depth to get over the bottom cill, so a second chamber was added.
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The entry on Maison Busteed maintained by the Quebec Cultural Heritage Directory states that Busteed purchased the property from Jean-Baptiste Marcoux, but due to apparent defects in the sale he had to purchase it again from Rimphoff in 1800. At the time of MacWhirter's visit in the 1910s, "[t]he old house, recently repaired [was] a veritable museum of relics of the French period." James Le Moine, a late 19th century chronicler, concurred: > Mr. Busteed's house … contains several interesting relics of former > times—substantial mementoes of the strife which in 1690 and 1758–60 raged > between the navies of France and England. At the entrance of the > Restigouche, Admiral Byron sunk a French frigate close to Cross Point; a few > miles lower down, Percé and Bonaventure had been mercilessly pillaged in > 1690. The hulls of the French vessels can yet be seen in very low tides, > from one of which a massive cannon was procured some years back, and now > ornaments the fireplace of Mr. Busteed’s dwelling; it was shown to us.
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While plans were being laid to go after this remnant on Bras Island, Willmarth conducted anti-submarine patrol around the unloading assault craft and made abortive attempts to pull several LCI's that had been stranded by low tides off the reefs. At 17:30 on the 15th, the destroyer escort succeeded in towing one off after about an hour's time and began operations to free another one of the infantry assault craft. However, the destroyer escort's efforts were frustrated by the line's parting and the near approach of darkness. Four LCI(G)'s had to be left on the reef — as was one LCI — when the task group headed for Morotai. Arriving on 17 November, Willmarth fueled from Salamonie before anchoring. Underway again on the 18th, with the Asia Island occupation force, Willmarth and two PC's served as escort for Ariadne, four LCM's, four LCI's, and four LCI(G)'s. Embarked in the assault craft were 400 troops. Three-fourths of a mile off Igi Island, Willmarth, Ariadne, and PC-1122 conducted shore bombardment from 05:42 to 06:19 on the 19th.
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Recording the causeway at Isleworth Using data generated by the Thames Archaeological Survey, the Thames Discovery Programme selected twenty key sites across the Greater London area for further recording and on-going monitoring during 2008 - 2011. The first site chosen was Custom House, London; in February 2009, FROG members recorded the causeway, parts of the 1819 riverside wall, the Custom House gridiron, the remains of two vessels partly buried on the foreshore and a multi-phase revetment structure located under Billingsgate Wharf. In April 2009, an examination of access to the foreshore at Isleworth included recording the 20th century boat slipway and the remains of the Victorian ‘Church Ferry’ causeway. During low tides in June and July 2009, survey and recording at Charlton, London, formerly the location of Castle’s Shipbreakers Yard focused on the ‘stack’ of very large ships timbers surviving at the top of the foreshore which represent the remains of one or more warship class vessels. Nautical remains are very well represented at this site where, in addition to the ‘stack’, we have also discovered a slipway constructed of reused ship and boat timbers, as well as the remains of at least three smaller vessels.
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