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"seiche" Definitions
  1. an oscillation of the surface of a landlocked body of water (such as a lake) that varies in period from a few minutes to several hours

108 Sentences With "seiche"

How to use seiche in a sentence? Find typical usage patterns (collocations)/phrases/context for "seiche" and check conjugation/comparative form for "seiche". Mastering all the usages of "seiche" from sentence examples published by news publications.

"For us right now, we're committed to Android," Seiche said.
"Software innovation is becoming more and more important," Seiche told CNBC.
But Seiche told CNBC it would not launch in the U.S. or China.
A longtime CSU voter, von Seiche-Nordenheim said she plans to vote for the Green party.
Seiche explained that the 8110 could appeal to people in Western markets looking for a secondary device.
Seiche said HMD is confident it can meet the demand for its phones, despite being a young company.
One of them proposed that the wave might have been created by a curious phenomenon known as a seiche.
Seiche said the Nokia range would serve users, particularly in emerging markets, from feature phone to mid-market devices.
Europe remains the biggest region for Nokia phones sales, Seiche said; India, Russia and Indonesia are its biggest country markets.
"Of course, still a very large number is on feature phones, but the momentum on smartphones is really great," Seiche said.
Chief Executive Florian Seiche said HMD has sold around 22016 million phones after introducing 11 new phone models over the past year.
Chief Executive Florian Seiche said HMD has sold around 30 million phones after introducing 11 new phone models over the past year.
"China is a big focus market and we will make announcements on those dedicated products there in the future," Seiche told CNBC.
Ahead of the announcement, CEO Florian Seiche said the U.S. was seen as a "key opportunity" for the firm as it expands internationally.
And in Florida, Turkey Point's risks include intense rainstorms, storm surge, tsunamis, and something called a "seiche," where wind sloshes water dangerously high.
Also known as standing waves, seiche waves form in large bodies of water that are either steadily blown by strong winds or shaken by tremors.
His home, named Seiche, is near the university campus, where he spent his career at the Scripps Institution of Oceanography after joining its faculty in 210.
Seiche said the company saw an opportunity to grow its business further in the U.S. as China's Huawei is effectively blocked from doing deals with American firms.
"Nokia had these very iconic design legends and different people remember the 8110 for different reasons — but, certainly it's a lot about that emotional factor," Seiche said.
The company was showing it could innovate by delivering the world's first five-camera array system in a smartphone, Chief Executive Florian Seiche said in an interview.
They would have continued to fall as the seiche waves rolled in and out, depositing layer upon layer of sediment and each time ­sealing the tektites in place.
Seiche said there are a number of key markets around the world for Nokia, especially those that are still growing despite an overall dip in global smartphone demand.
Richards recalled that the 2011 Japanese earthquake produced bizarre, five-foot seiche waves in an absolutely calm Norwegian fjord thirty minutes after the quake, in a place unreachable by the tsunami.
HMD has its own factory in India, and Seiche revealed to CNBC that the company is thinking of setting up another, which will help bring costs down and get products out faster.
HMD's president on closing would be Florian Seiche, currently Senior Vice President for Europe Sales and Marketing at Microsoft Mobile, and who previously held key roles at Nokia, HTC and other global brands.
"We feel great about the momentum we had in 2017 and that gives us the confidence to double down in 2018," Seiche told reporters at a briefing in London ahead of the product launch.
"We have significantly ramped up our supply, however, we are still catching up with the demand but we feel that is a positive thing as it helps to sustain the momentum," Seiche told CNBC.
HMD CEO Florian Seiche said the firm will look to roll out next-generation 5G mobile networks on "midmarket" phones by 2020, and is making its hardware "futureproof" to get there as soon as possible.
"The U.S. requires a separate strategy, even a separate portfolio and tech investment so we are not in a rush today around that because we are seeing such strong demand across the globe," Seiche said.
"Voters who have decided to vote AfD will do so because they don't believe his anti-immigration rhetoric is genuine," said Julia von Seiche-Nordenheim, chairwoman of the 'Education instead of Deportation' refugee charity in Regensburg.
Undoubtedly, this would have created an enormous tsunami, but Mr DePalma suspects that the Tanis fossils, located thousands of kilometres to the north, were killed by a different phenomenon, triggered by the impact: a seiche wave.
Mr DePalma and his colleagues propose that the asteroid impact shook Earth so forcefully that seiche waves as tall as 100 metres rose up in every large body of water across the planet, including the shallow sea near Tanis.
"Our aim is to be one of the leading players in the global smartphone market, and our initial success strengthens our confidence that we can continue on our growth path in 2018 and beyond," CEO Florian Seiche said in a statement.
"This time last year, we started our journey with huge expectations from fans and a massive responsibility to deliver on the legacy of one of the most innovative brands in our space," Florian Seiche, CEO of HMD Global, said in a statement.
Interestingly neither Juha nor Florian Seiche, the president of HMD (pictured here on the left, with Sarvikas to his right), would rule out ever building a platform itself, although for today, it's very much a Google story to test the appetite for Nokia smartphones.
"We see especially with the Nokia 1 there is this unique opportunity that so many previous feature phones users are getting ready to embrace smartphones, and there were maybe reasons why they haven't moved to a smartphone as quickly as we would have liked," Seiche said.
"It's a critical year for HMD to again to make a deeper impact in the key geographies and our path is to become one of the key smartphone players," Florian Seiche, CEO of HMD global, told CNBC ahead of the launch at Mobile World Congress in Barcelona, Spain.
The 81103 will run an operating system known as Kai OS. Florian Seiche, CEO of HMD global, told CNBC ahead of the launch that the company is working with Google and Facebook to bring apps to the device, which will be available from May and cost 79 euros ($97).
"We think with the Nokia brand and the combination of industry leading performance as well as immersive and innovative consumer experience, we will be immediately able to make a mark in the high end segment," Florian Seiche, acting chief executive of HMD Global, told CNBC in an interview ahead of the launch.
People from Piré-sur-Seiche are called Piréens in French.
Inhabitants of Noyal- Châtillon-sur-Seiche are called in French castelnodais.
Is thought to have generated a tsunami/seiche wave with a height approaching .
The natural resonant period of Hilo Bay is about thirty minutes. That meant that every second wave was in phase with the motion of Hilo Bay, creating a seiche in the bay. As a result, Hilo suffered worse damage than any other place in Hawaii, with the combined tsunami and seiche reaching a height of 26 feet along the Hilo Bayfront, killing 96 people in the city alone. Seiche waves may continue for several days after a tsunami.
Noyal-Châtillon-sur-Seiche () is a commune in the Ille-et-Vilaine department of Brittany in northwestern France.
Availles-sur-Seiche (, Gallo: Avaylh) is a commune in the Ille-et-Vilaine department, in Brittany, in northwestern France.
As a result of the earthquake, a strong seiche (standing wave) swept the shores of Tiberias causing additional death.
Gennes-sur-Seiche (, Gallo: Genn) is a commune in the Ille-et-Vilaine department in Brittany in northwestern France.
Vern-sur-Seiche (, Gallo: Vèrn) is a commune in the Ille-et-Vilaine department in Brittany in northwestern France.
A seiche ( ) is a standing wave in an enclosed or partially enclosed body of water. Seiches and seiche-related phenomena have been observed on lakes, reservoirs, swimming pools, bays, harbours and seas. The key requirement for formation of a seiche is that the body of water be at least partially bounded, allowing the formation of the standing wave. The term was promoted by the Swiss hydrologist François-Alphonse Forel in 1890, who was the first to make scientific observations of the effect in Lake Geneva, Switzerland.
FAO Species Catalogue for Fishery Purposes. No. 4, Vol. 1. Rome, FAO. pp. 57–152. It is also known as seiche pharaon.
On April 11, 1893, a Lake Michigan seiche (a phenomenon similar to an ocean tsunami) pushed a wall of water, high, up the river at St. Joseph and Benton Harbor. This raised the level of the river by . The cause of the seiche was unknown, but has been attributed to a sudden squall or change in atmospheric pressure.Hilton, George Woodman (2002).
A seiche of more than 1 meter was observed on Panguipulli Lake following the earthquake.Rojas, p. 67. On 22 May, a seiche occurred also in Nahuel Huapi Lake, on the Argentine side of the Andes, more than 200 km away from Valdivia. The wave, most likely produced by an earthquake-triggered sediment slide at the lake bottom, killed two people and destroyed a pier in San Carlos de Bariloche city.
Seiches have been observed in seas such as the Adriatic Sea and the Baltic Sea. This results in the flooding of Venice and St. Petersburg, respectively, as both cities are constructed on former marshland. In St. Petersburg, seiche-induced flooding is common along the Neva River in the autumn. The seiche is driven by a low pressure region in the North Atlantic moving onshore, giving rise to cyclonic lows on the Baltic Sea.
A massive collapse of the western edge of the basin that formed McKinney Bay around 50,000 years ago is thought to have generated a tsunami/seiche wave with a height approaching .
Ben Korgen. Bonanza for Lake Superior: Seiches Do More Than Move Water. Retrieved on 2008-01-31 The same storm system that caused the 1995 seiche on Lake Superior produced a similar effect in Lake Huron, in which the water level at Port Huron changed by over two hours. On Lake Michigan, eight fishermen were swept away from piers at Montrose and North Avenue Beaches and drowned when a seiche hit the Chicago waterfront on June 26, 1954.
Bruz is located near the center of the Ille-et-Vilaine department, 14 km from Rennes. It is near the Vilaine river and her tributaries, the Seiche river being the most important.
These can lead to extreme seiches of up to between the ends of the lake. The effect is similar to a storm surge like that caused by hurricanes along ocean coasts, but the seiche effect can cause oscillation back and forth across the lake for some time. In 1954, the remnants of Hurricane Hazel piled up water along the northwestern Lake Ontario shoreline near Toronto, causing extensive flooding, and established a seiche that subsequently caused flooding along the south shore. Lake seiches can occur very quickly: on July 13, 1995, a large seiche on Lake Superior caused the water level to fall and then rise again by three feet (one metre) within fifteen minutes, leaving some boats hanging from the docks on their mooring lines when the water retreated.
Engineers consider seiche phenomena in the design of flood protection works (e.g., Saint Petersburg Dam), reservoirs and dams (e.g., Grand Coulee Dam), potable water storage basins, harbours and even spent nuclear fuel storage basins.
In the Welsh alphabet, represents . In the Irish and Scottish Gaelic orthographies, it represents before a slender consonant. In the Dutch alphabet and the Afrikaans alphabet, represents . In French orthography, represents , as in seiche.
The high altar of Domalain was built in 1637 by Corbineau.\- Retable et gradin d'autel de Domalain The altarpiece has the same structure as the one of the église de la Trinité de Laval. The altarpiece of the main altar of the Saint-Pierre of Piré-sur-Seiche church, representative of the Laval school. Corbineau made a deal with the inhabitants of Piré-sur-Seiche on December 12, 1637, to build two altars in their church where, in 1631, he had already raised a high altar that still remains.
The exact mechanism of the site's destruction has been debated as either an impact-caused tsunami or lake and river seiche activity triggered by post-impact earthquakes, though there has yet been no firm conclusion upon which researchers have settled.
During the morning hours of July 11, 2011, the line of severe thunderstorms moved very quickly across Northern Illinois and Southern Lake Michigan, producing widespread wind damage. In addition, the strong thunderstorm winds with this system generated a classic seiche event on the lake. A seiche is a situation where lake water ahead of the storms is piled up along the downwind shore (in this case Indiana and Michigan) and then sloshes back and forth across the lake for several hours. In Chicago, this derecho injured six people in the collapse of a festival tent and left more than 860,000 people without electricity.
The resulting currents can create complex turbulence patterns, as higher layers of warmer waters mix with the lower lying colder waters of the loch. Other bodies of fresh water which experience this seiche effect include Lake Geneva, Lake Garda, the Great Lakes and Lake Baikal.
The lake has a natural seiche rhythm of eleven minutes. The seiche effect normally is only about inches (2 cm) but can be greatly amplified by earth movement, winds, and atmospheric pressure changes. Because of its great depth, the lake as a whole never freezes in winter, but an ice sheet covering between 10% and 90% of the lake area typically develops, depending on the severity of the winter. Ice sheets typically form along the shoreline and in slack water bays, where the lake is not as deep. During the winters of 1877 and 1878, the ice sheet coverage was up to 95–100% in most of the lake.
Due to the shallow depth, it was felt at least as far away as Seattle and it generated seiches on bodies of water as far away as Texas and New Orleans, Louisiana. About 20 houseboats were damaged by a seiche on a lake in Washington State.
A legend says that the lake bed was formed when a giant ogre, Kopu-wai was burned while lying asleep, leaving only his heart behind, which according to the same legend is the cause of the rhythmic rise and fall of the lake's seiche. Waka can also mean 'hollow'.
Street Cred - Rue de l'aviateur LETORT à Piré-sur-Seiche On 10 December 1913 Letort made an attempt to win the Aero Club of France Criterium prize for the longest return flight made during the year, flying a Maurice Farman biplane. After departing from Buc with the intention of flying to Bordeaux and back, he flew until he had to make a forced landing at Barbezieux, during which the aircraft ran into a ditch and overturned. He died on arrival at hospital at Barbezieux. He was buried in Pire-sur-Seiche on 14 December 1913, attended by a large crowd of mourners.Léon Letort : pionnier rennais de l’aviation », Le Gall, Erwan, En Envor (accessed 5 Sept 2014).
They are susceptible to seismic wave amplification, seismic wave refraction, and soil liquefaction during earthquakes, but also susceptible to flooding during earthquakes if the lake spillovers. Large waves can be produced during earthquakes, either as a result of landslides affecting the lake inner slopes, or by seismic resonance (seiche waves).
Large lakes such as Superior and Erie can experience tides of , but these can be masked by meteorologically induced phenomena such as seiche. The tide in Lake Michigan is described as or . This is so small that other larger effects completely mask any tide, and as such these lakes are considered non-tidal.
In the latter case, some people reported strange feelings of pressure and dogs, cats, and raccoons went wild. The derecho also caused boating accidents by generating a seiche on Lake Michigan which was reported to be around high as it first struck the Michigan coastline of Lake Michigan further north in Muskegon County.
Loch Ness, because of its long, straight shape, is subject to unusual ripples affecting its surface. A seiche is a large oscillation of a lake, caused by water reverting to its natural level after being blown to one end of the lake (resulting in a standing wave); the Loch Ness oscillation period is 31.5 minutes.
Restaurants are popular in the area known as Le Midi. Oysters come from the Etang de Thau, to be served in the restaurants of Bouzigues, Meze, and Sète. Mussels are commonly seen here in addition to fish specialties of Sète, Bourride, Tielles and Rouille de seiche. In the Languedoc jambon cru, sometimes known as jambon de montagne is produced.
Landslides closed a segment of the Colima-Guadalajara Highway and the port of Manzanillo. Power and telephone outages occurred in Mexico City. A local tsunami of about 1 m (peak-to-trough) was recorded at Manzanillo. A seiche was observed on Lake Pontchartrain in the US state of Louisiana, and sediment was stirred up in several Louisiana wells.
192 in: La Seiche, The Cuttlefish. Boucaud-Camou, E. (Ed). Caen, France; Centre de Publications de l'Université de Caen. They have an unusual biogeographic pattern: they are present along the coasts of East and South Asia, Western Europe, and the Mediterranean, as well as all coasts of Africa and Australia, but are totally absent from the Americas.
Queenstown is on the northern shore of the lake close to eastern end of its middle section. It has a seiche of period 26.7 minutes which, in Queenstown Bay, causes the water level to rise and fall some . Lake Wakatipu is renowned for its scenic beauty, being surrounded by mountains. The Remarkables mountain range lies along its southeastern edge.
Judith Horton married oceanographer Walter Munk as his second wife, in 1953, and had two daughters, Kendall and Edie. The Munks designed their home in La Jolla, "Seiche," and frequently hosted campus social gatherings there."Judith Munk, 1925–2006: A Friend of Oceanography" Oceanography 19(3)(September 2006): 9. Judith died in 2006, age 81, from pneumonia.
The maximum water-level displacement in the whole bay during this seiche event is assumed to have reached , at the bottom of the bay. Seiches in Western Kyushu — including Nagasaki Bay — are often induced by a low in the atmospheric pressure passing South of Kyushu island. Seiches in Nagasaki Bay have a period of about 30 to 40 minutes. Locally, is called .
Amanlis is located approximately 14 miles southeast of Rennes, the capital of Brittany, at the junction of highways D36 and D37. The town is on the banks of the River Seiche, a tributary of the Vilaine. The countryside is hilly and dotted with farms, orchards and small woods. The largest village in the commune after the town of Amanlis is called Néron.
Further east is Ardvorlich House, home to the Stewarts of Ardvorlich from 1580 (rebuilt in 1790). Loch Earn is unusual in that it has its own apparent 'tidal system', or seiche,Murray, J, 1906. An investigation of the seiches of Loch Earn by the Scottish Lake Survey, Part 2, Preliminary limnographic investigations on Loch Earn. Trans. Roy. Soc. Edinb., 45, 387-396.
Other lakes well known for their regular seiches is New Zealand's Lake Wakatipu, which varies its surface height at Queenstown by 20 centimetres in a 27-minute cycle. Seiches can also form in semi-enclosed seas; the North Sea often experiences a lengthwise seiche with a period of about 36 hours. Differences in water level caused by a seiche on Lake Erie, recorded between Buffalo, New York (red) and Toledo, Ohio (blue) on November 14, 2003 The National Weather Service issues low water advisories for portions of the Great Lakes when seiches of 2 feet or greater are likely to occur. Lake Erie is particularly prone to wind-caused seiches because of its shallowness and its elongation on a northeast-southwest axis, which frequently matches the direction of prevailing winds and therefore maximises the fetch of those winds.
During the passage of Oratia's cold front on 30 October 2000, a harbour Seiche was observed in Rotterdam harbour with a period of 1.5 hours. In Germany winds up to were recorded at the Brocken in Lower Saxony, where a man was seriously injured. In Oldenburg, near gale-force winds resulted in two traffic accidents in which a man was seriously injured. In Brunswick, cars were damaged by falling trees.
Letort was born on 18 September 1889 in Pire-sur-Seiche, Brittany, the youngest of four brothers and four sisters from a wealthy family in the textile business. He was educated in Rennes at the School of Brothers of Christian Instruction at Parc du Thabor and the College of St. Martin. His main interest was in mechanical things, so on leaving school aged 18 he started in the automotive and aviation industry.
A seiche, a wave effect created by wind, atmospheric pressure, or seismic activity on water, crested over Hebgen Dam, causing cracks and erosion. The earthquake created fault scarps up to high in the area near Hebgen Lake and the lake bottom itself dropped the same distance. of the area near Hebgen Lake subsided more than . Several geysers in the northwestern sections in Yellowstone National Park erupted and numerous hot springs became temporarily muddied.
In 1826 sealers in Dusky Sound experienced a large earthquake that had aftershocks that went into the following year. The earthquake descriptions are considered consistent with a 7.6 to 8 magnitude quake given the extent of landslides and uplift. A tsunami or seiche caused by the uplift impacted the area where the sealers were. Its size has not been determined but it must have been significant (greater than 1 metre) to concern the sealers.
Low rhythmic seiches are almost always present on larger lakes. They are usually unnoticeable among the common wave patterns, except during periods of unusual calm. Harbours, bays, and estuaries are often prone to small seiches with amplitudes of a few centimetres and periods of a few minutes. The original studies in Lake Geneva by François-Alphonse Forel found the longitudinal period to have a 73-minute cycle, and the transversal seiche to have a period of around 10 minutes.
The 1950 Assam–Tibet earthquake is known to have generated seiches as far away as Norway and southern England. Other earthquakes in the Indian sub-continent known to have generated seiches include the 1803 Kumaon-Barahat, 1819 Allah Bund, 1842 Central Bengal, 1905 Kangra, 1930 Dhubri, 1934 Nepal-Bihar, 2001 Bhuj, 2005 Nias, 2005 Teresa Island earthquakes. The February 27, 2010 Chile earthquake produced a seiche on Lake Pontchartrain, Louisiana with a height of around 0.5 feet.
In 2014 he won a Paul Hamlyn Foundation Award for Artists in recognition of his work as a composer. In 2015 Green was commissioned to write music and create a new noise device by the Kronos Quartet. The new piece of music, Seiche, was performed on the Kronos Quartet's UK tour in 2016. Green began work on Flit in 2016, a new production created in collaboration with BAFTA-winning animators Will Anderson and Ainslie Henderson of whiterobot.
The low pressure of the cyclone draws greater-than-normal quantities of water into the virtually land-locked Baltic. As the cyclone continues inland, long, low- frequency seiche waves with wavelengths up to several hundred kilometres are established in the Baltic. When the waves reach the narrow and shallow Neva Bay, they become much higher — ultimately flooding the Neva embankments.This behaves in a fashion similar to a tidal bore where incoming tides are funneled into a shallow, narrowing river via a broad bay.
Marie, Michigan, with of water. Hainault's hypothesis held that this seiche contributed to Edmund Fitzgerald shoaling of her hull on Superior Shoal, causing the hull to be punctured mid-body. The hypothesis contended that the wave action continued to damage the hull, until the middle third dropped out like a box, leaving the ship held together by the center deck. The stern section acted as an anchor and caused Edmund Fitzgerald to come to a full stop, causing everything to go forward.
This layering of the lake, as well as the distinct physical barriers (sills) between basins cause for slow movement of water through the lake. (Ecology TMDL, 2008) Another important hydrological phenomenon on Lake Whatcom is the occurrence of seiches. A seiche is the slow sloshing of water from one side of the lake to the other, due to winds in Lake Whatcom’s case. Winds will push water to one side of the lake, causing water levels to rise on one end and lower on the other.
The more energy is released, the more damage is likely to occur on the ground due to the environmental effects triggered by the impact. Such effects can be shock waves, heat radiation, the formation of craters with associated earthquakes, and tsunamis if water bodies are hit. Human populations are vulnerable to these effects if they live within the affected zone. Large seiche waves arising from earthquakes and large-scale deposit of debris can also occur within minutes of impact, thousands of kilometres from impact.
Map of the Seerhein with observatories of the "water miracle" On 23 February 1549 the "water miracle of Constance" is reported to have happened: the Seerhein rose and fell over several hours at intervals of about a quarter of an hour by a ell, more than half a meter. Fishermen on the Lower Lake reported that the water of the Rhine appeared to flow backwards. Today, this event can be explained scientifically: Certain wind conditions induce waves at the natural frequency of the upper and lower lake. This creates a seiche, i.e.
This shoal, charted in 1929, is an underwater mountain in the middle of Lake Superior about north of Copper Harbor, Michigan. It has sharp peaks that rise nearly to the lake surface with water depths ranging from , making it a menace to navigation. Discovery of the shoal resulted in a change in recommended shipping routes. A seiche, or standing wave, that occurred during the low-pressure system over Lake Superior on November 10, 1975, caused the lake to rise over the Soo Locks's gates to flood Portage Avenue in Sault Ste.
The funnel-like shape increases the height of the tide above normal, and the flood appears as a relatively rapid increase in the water level. Similar phenomena are observed at Venice, resulting in the MOSE Project, a system of 79 mobile barriers designed to protect the three entrances to the Venetian Lagoon. Nagasaki Bay is a typical area in Japan where seiches have been observed from time to time, most often in the spring — especially in March. On 31 March 1979, the Nagasaki tide station recorded a maximum water-level displacement of , at that location due to the seiche.
Once this new stratification establishes itself, it lasts until the water warms enough for the 'spring turnover,' which occurs after the ice melts and the surface water temperature rises to 4 °C. During this transition, a thermal bar may develop. Waves can occur on the thermocline, causing the depth of the thermocline as measured at a single location to oscillate (usually as a form of seiche). Alternately, the waves may be induced by flow over a raised bottom, producing a thermocline wave which does not change with time, but varies in depth as one moves into or against the flow.
They group frequently toured East Anglia, before slimming down to a duo (McCartan and Short) in order to tour Europe and even Australia. In 1993 the duo moved to Brittany, and was joined by Short's brother Chris (fiddle, mandolin, whistle and musical saw), who had been in London playing in World, Irish and Bluegrass groups. In 1999, after 19 years of touring, they recorded their first studio album The Parting Glass in Vern-sur-Seiche. This was followed by Strange News in 2001 and the live album This Fine Night in 2003 taking tracks from their recent tour of France.
HMD is in a partnership with Google, and uses the Android operating system under the Android One program on their smartphones, whereas HMD's feature phones use the Series 30+ platform, or most recently, the Firefox OS-derived KaiOS. The HMD brand is only used for corporate purposes and does not appear in advertising, whereas the name Nokia Mobile is used on social media. HMD is headquartered in Espoo, Finland, and is largely run by former Nokia executives. The first CEO was Arto Nummela, a Nokia veteran of 17 years, until July 2017, when company president Florian Seiche took over as CEO.
Seiches are often imperceptible to the naked eye, and observers in boats on the surface may not notice that a seiche is occurring due to the extremely long wavelengths. The effect is caused by resonances in a body of water that has been disturbed by one or more factors, most often meteorological effects (wind and atmospheric pressure variations), seismic activity, or tsunamis.Tsunamis are normally associated with earthquakes, but landslides, volcanic eruptions and meteorite impacts all have the potential to generate a tsunami. Gravity always seeks to restore the horizontal surface of a body of liquid water, as this represents the configuration in which the water is in hydrostatic equilibrium.
Seiche created by a 7.1 M earthquake at Devils Hole on 5 July 2019 The Devils Hole pupfish species is limited to a single site and highly susceptible to disturbance. In the 1970s, the species was threatened with groundwater depletion, as the withdrawal of groundwater lowered the water level of Devils Hole and limited their ability to spawn on the shallow shelf. After the groundwater withdrawal was limited, its population rebounded, but experienced a second decline from 1995 onward. The reasons for the second decline are unknown, but inbreeding depression, the loss of a prey species, changing algal and microbial communities, or shifting sediment dynamics have been hypothesized as potential factors.
Lake Tahoe is an example of a lake that is in danger of having a tsunami due to faulting processes. Lake Tahoe in California and Nevada USA lies within an intermountain basin bounded by faults, with most of these faults at the lake bottom or hidden in glaciofluvial deposits. Lake Tahoe has had many prehistoric eruptions and in studies of the lake bottom sediments, a 10m high scarp has displaced the lake bottom sediments, indicating that the water was displaced by the same magnitude, as well as generating a tsunami. A tsunami and seiche in Lake Tahoe can be treated as shallow-water long waves as the maximum water depth is much smaller than the wavelength.
Instead, the initial papers on Tanis conclude that much faster earthquake waves, the primary waves travelling through rock at about , probably reached Hell Creek within six minutes, and quickly caused massive water surges known as seiches in the shallow waters close to Tanis. Seiche waves often occur shortly after significant earthquakes, even thousands of miles away, and can be sudden and violent. Some recent examples include the 1964 Alaskan earthquake (seiches in Puerto Rico), the 1950 Assam-Tibet earthquake (India/China) (seiches in England and Norway), the 2010 Chile earthquake (seiches in Louisiana). Notably, the powerful Tōhoku earthquake in 2011, slower secondary waves traveled over in less than 30 minutes to cause seiches around high in Norway.
The long and narrow rectangular shape of the Adriatic Sea is the source of an oscillating water motion (called seiche) along the basin's minor axis.Introduction to Previsioni di Marea nell'Alto Adriatico (in Italian), Venice, issue 29 of year 29, by Stefano Fracon The principal oscillation, which has a period of 21 hours and 30 minutes and an amplitude around 0.5 meters at the axis' extremities, supplements the natural tidal cycle, so that the Adriatic Sea has much more extreme tidal events than the rest of the Mediterranean. A secondary oscillation is also present, with an average period of 12 hours and 11 minutes.Stravisi, Franco: Caratteristiche meteorologiche e climatiche del Golfo di Trieste , Università degli Studi di Trieste, Dipartimento di Scienze della Terra.
Meteotsunamis, rather, are triggered due to extreme weather events including severe thunderstorms, squalls and storm fronts; all of which can quickly change atmospheric pressure. Meteotsuamis typically occur when severe weather is moving at the same speed and direction of the local wave action towards the coastline. The size of the wave is enhanced by coastal features such as shallow continental shelves, bays and inlets. Only about 3% of historical tsunami events (from 2000 BC through 2014) are known to have meteorological origins, although their true prevalence may be considerably higher than this because 10% of historical tsunamis have unknown origins, tsunami events in the past are often difficult to validate, and meteotsunamis may have previously been misclassified as seiche waves.
Eighteen months before publication of the peer-reviewed PNAS paper in 2019 DePalma and his colleagues presented two conference papers on fossil finds at Tanis on 23 October 2017 at the annual meeting of the Geological Society of America. Jan Smit first presented a paper describing the Tanis site, its association with the K-Pg boundary event and associated fossil discoveries, including the presence of glass spherules from the Chicxulub impact clustered in the gill rakers of acipenciform fishes and also found in amber.Smit, J., et al. (2017) Tanis, a mixed marine-continental event deposit at the KPG Boundary in North Dakota caused by a seiche triggered by seismic waves of the Chicxulub Impact Paper No. 113-15, presented 23 October 2017 at the GSA Annual Meeting, Seattle, Washington, USA.
In this way, the mere is replenished by seepage from the bed of the lime-rich river, through the river's natural levée, or by winter floods. The water of the mere is then static through the summer, when the concentration of the calcium carbonate rises until it is precipitated on the bed of the mere. Even quite shallow lake water can develop a thermocline in the short term but where there is a moderately windy climate, the circulation caused by wind drift is sufficient to break this up. (The surface is blown down-wind in a seiche and a return current passes either near the bottom or just above the thermocline if that is present at a sufficient depth.) This means that the bed of the shallow mere is aerated and bottom-feeding fish and wildfowl can survive, providing a livelihood for people around.
The 1960 Valdivia Chile earthquake was the most powerful ever recorded, estimated at magnitude 9.4 to 9.6. Using the same formula, the Chicxulub earthquakes may have released up to 1412 times as much energy as the Chile event. Co-author Mark Richards, a professor of earth sciences focusing on dynamic earth crust processes suggests that the resulting seiche waves would have been approximately high in the Western Interior Seaway near Tanis and credibly, could have created the high water movements evidenced inland at the site; the time taken by the seismic waves to reach the region and cause earthquakes almost exactly matched the flight time of the microtektites found at the site. This would resolve conflicting evidence that huge water movements had occurred in the Hell Creek region near Tanis much less than an hour after impact, although the first megatsunamis from the impact zone could not have arrived at the site for almost a full day.
A sandbagging machine was assembled in St. Laurent and produced sandbags for use by cottagers and residents in both Woodlands and St. Laurent. Sandbags were also trucked in from the surplus stock from Winnipeg. Twin Lakes Beach Road South near Sunshine Beach Campground during the May 31, 2011 storm Water flowing across Twin Lakes Beach Road South during the May 31, 2011 storm On May 31 , strong winds from the northwest which reached at times over 100 km/h occurred on Lake Manitoba, causing waves as high as which resulted in major flooding at Twin Lakes Beach and the surrounding beaches such as Laurentia Beach and Sandpiper Beach, as well as other locations on the lake including Delta Beach and St. Ambroise. The strong wind caused water from the north basin of Lake Manitoba to transfer to the south basin causing lake to surge (seiche effect) from above sea level in the morning to an estimated level of above sea level, a rise of over .
Meehan, RL 2011 The Baldwin Hills dam designer, engineer Ralph Proctor, had also worked as an assistant civil engineer for the Los Angeles Department of Water and Power on the failed St. Francis Dam,Coroner's Inquest 1928 and had subsequently devised new methods of producing compacted earth fill in building its replacement.Rogers 2011 Proctor aggressively proceeded with the Baldwin Hills project even in the face of safety concerns and disagreements over important design details raised within his own department. Late in 1963, when the Baldwin Hills failure occurred, coincidentally also happened to be the time of another notable public disaster. Only two months before, at the Vajont Dam in Italy, a massive landslide into the reservoir created a seiche, which overtopped the dam, thereby flooding the valley below and causing the deaths of about 2000 people. The Baldwin Hills Reservoir had been built, as were others, to assure an ample supply of safe water for the people of Los Angeles in case of a catastrophe such as an earthquake, fire, or war, and its failure was a blow to engineering confidence and the subject of many writings and two professional conferences (1972 and 1987, see references).

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