124 Sentences With "contour line" | Random Sentence Generator

Done well, a cross contour line drawing, where the line work essentially indicates an object's three-dimensional depth, can be mesmerizing.

Like Manet — but working with pen and ink to draw a firm but delicate contour line — Mazur pared away everything he thought was unnecessary.

Like other cross contour line drawings, Formentera's work looks like an optical illusion popping off the paper, giving a seductive amount of depth to the work.

The crude, contour-line drawings created by a Brazilian artist named Heloísa, who started the account in 143, capture the distinct personalities of cats — not always an easy task.

High Peak's summit rises 1,775 feet (541 m) from the lowest elevation contour line that encircles it.

Contour lines are often given specific names beginning "iso-" () according to the nature of the variable being mapped, although in many usages the phrase "contour line" is most commonly used. Specific names are most common in meteorology, where multiple maps with different variables may be viewed simultaneously. The prefix "iso-" can be replaced with "isallo-" to specify a contour line connecting points where a variable changes at the same rate during a given time period. The words isoline and isarithm ( ' "number") are general terms covering all types of contour line.

The line of greatest slope has practical significance in map reading. On the terrain it is often far more discernible, even intuitively obvious, rather than accurately picking out the consistent height level on what is likely the undulating uneven ground along the ground represented on the contour line. But knowing that a greatest slope vector is orthogonal to the contour line, one can readily deduce the direction of the contour lines from the line of greatest slope. The extent and overall direction of the contour line to a map scale can only be found on the topographic map.

Line colour can be varied to show other information. Line type refers to whether the basic contour line is solid, dashed, dotted or broken in some other pattern to create the desired effect. Dotted or dashed lines are often used when the underlying base map conveys very important (or difficult to read) information. Broken line types are used when the location of the contour line is inferred.

Retrieved January 29, 2010. But the region had remained unproductive before the innovation of building a segi along a contour line. This type of irrigation network is called yoko-segi (horizontal irrigation network), as opposed to usual tate-segi (vertical irrigation network). In the early Edo period, after many failures, the mayor of Yabara village succeeded in building Yabara-segi along the 545-meter contour line.

The reconstruction is also called 'quantum tomographic reconstruction'. For squeezed states, the Wigner function has a Gaussian shape, with an elliptical contour line, see Fig.: 1(f).

The emblem is executed in warm-cold colors. The light silhouette of the image on a dark background is strict and expressive. A circle is outlined by a contour line.

Cave Gully is a seasonal river in Saint Ann Parish, Jamaica. It flows north from just below the contour line to meet the Caribbean Sea at Sandy Bay, a small cove.

The thin red circular contour line in the middle of the map indicates the top of the oil reservoir. Because gas floats above oil, the thin red contour line marks the gas/oil contact zone. Petroleum engineering is a field of engineering concerned with the activities related to the production of hydrocarbons, which can be either crude oil or natural gas. Exploration and production are deemed to fall within the upstream sector of the oil and gas industry.

New York: Oxford University Press, 1996. p. 344. It is a plane section of the three-dimensional graph of the function f(x, y) parallel to the (x, y)-plane. In cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level.Merriam Webster – contour line A contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

Nautical charts provide information about the seabed materials at particular locations. Nautical charts also include depth contour lines. It is thus sometimes possible to navigate in poor visibility by noting which contour line one is closest to.

It was accepted that no contour line could be the solution and that a tunnel under the Rimutaka Ranges was the only satisfactory answer. The adopted route was the shortest route, a tunnel between Mangaroa and Lucena’s Creek gully.

An isochalaz is a line of constant frequency of hail storms, and an isobront is a line drawn through geographical points at which a given phase of thunderstorm activity occurred simultaneously. Snow cover is frequently shown as a contour-line map.

A curve of equidistant points is a set of points all at the same distance from a given point, line, or polyline. In this case the function whose value is being held constant along a contour line is a distance function.

Contrast between topographic isolation and prominence In topography, prominence (also referred to as autonomous height, relative height, and shoulder drop in US English, and drop or relative height in British English) measures the height of a mountain or hill's summit relative to the lowest contour line encircling it but containing no higher summit within it. It is a measure of the independence of a summit. A peak's key col (the highest col surrounding the peak) is a unique point on this contour line and the parent peak is some higher mountain, selected according to various criteria.

For example, it is possible to walk from the Weißenberg to Leimen, Kaiserslautern-Mölschbach, Elmstein and via the forester's lodges of Taubensuhl and Heldenstein almost as far as the town of Neustadt on ridges without dropping below the 450 metre contour line.

Whilst the height of the Renneckenberg is usually given as 933 metres above sea level (southern top), the last contour line below the summit on the maps is 930 m. The northern top of the mountain is 929.7 metres above sea level.

A point (x,y,z) of the contour line of an implicit surface with equation f(x,y,z)=0 and parallel projection with direction \vec v has to fulfill the condition g(x,y,z)= abla f(x,y,z)\cdot \vec v=0, because \vec v has to be a tangent vector, which means any contour point is a point of the intersection curve of the two implicit surfaces : f(x,y,z)=0 ,\ g(x,y,z)=0. For quadrics, g is always a linear function. Hence the contour line of a quadric is always a plane section (i.e. a conic section).

From the ridgeline the boundaries extend down to the contour line at the eastern base of the hillside. The southern boundary is Sulphur Creek and one of its tributaries, while the northern boundary is Ritchie Creek. Elevations range from to . The region has a predominantly eastern exposure.

The US Department of Transportation provides additional guidance on recreational bicycle and pedestrian trail planning and design standards. A well designed recreational mountain bike path for the exclusive use of bicycles has an average grade of less than 10%, and generally follow a contour line, rather than straight downhill.

The 380.6 m-high Calmont summit lies 293.1 metres above the Moselle, on which the lowest contour line on topographic maps is 87.5 m. It is also an average of about 270 metres above Bremm. Around 215 metres east-northeast of the summit is a spot height of 378.4 m.

6 mile northeast of Lahaska. (30) From there in a straight > line to the point where a power transmission line crosses the 400 ft. > contour line on the south side of Solebury Mountain. (31) From there in a > straight line to the tower on Bowman Hill in Washington Crossing State Park.

A contour line (also isoline, isopleth, or isarithm) of a Function of two variables is a curve along which the function has a constant value, so that the curve joins points of equal value.Courant, Richard, Herbert Robbins, and Ian Stewart. What Is Mathematics?: An Elementary Approach to Ideas and Methods.

Among other characteristics, he used strong colour and a red contour line. As a result, he was asked to be a contributor to the Group of Seven's 1926 exhibition, a signal honour. In 1926, Warrener had an exhibition of his own at the Sarnia Carnegie Library and sold 25 paintings. It too was considered a triumph.

A group of post-stack attributes that are computed from the curvature of a specified horizon. These attributes include: magnitude or direction of maximum curvature, magnitude or direction of minimum curvature, magnitude of curvature along the horizon's azimuth (dip) direction, magnitude of curvature along the horizon's strike direction, magnitude of curvature of a contour line along a horizon.

The colossal walls of Cerro Cota 2000 and Cerro Catedral punctuate the western region of the Valley. Cerro Cota 2000 is named for its elevation; its highest contour line is about . Cerro Catedral is named so because its east face resembles a cathedral's facade. To the north stands the granite arête called Aleta de Tiburón (English: Shark's Fin).

A 1994 field survey conducted by Austral Archaeology identified 50 archaeological elements visible on the surface of Lytton Hill, and all located above the contour line. The bulk of these remain, but the former Post and Telegraph Office was vandalised in 1994, resulting in loss of interior casement windows, doors, light fittings and fireplace surrounds and grates.

A small pond on The Chains The Chains is the name given to the north-west plateau of Exmoor, Somerset, England. This plateau lies above the contour line, and includes the source of the River Barle. It lies roughly within a triangle of land between Simonsbath, Challacombe and Lynton and has few distinguishing features. The highest point is at Chains Barrow - .

Azumino Suidoki (History of Azumino), Part 5 of 9 . Retrieved January 29, 2010. This success was followed in 1685 by the building of Kan'zaemon-segi and in 1849 by the Jikka-segi, designated by the Ministry of Agriculture, Forestry, and Fisheries of Japan as one of the 100 best agricultural waterways. Both were designed to run along a contour line.

Halcott Mountain is one of the Catskill Mountains of the U.S. state of New York. It is mostly located in Greene County, with some of its lower slopes in Delaware and Ulster counties. Its exact summit elevation has not been officially determined, but the highest contour line on the mountain is . It is one of the peaks on the divide between the Delaware and Hudson watersheds.

Element Yachts originally began life as the P.C. Mould company. P.C. Mould produced the historic Dragonfly sailboat under license and re-formed in their present location as Contour Yachts. Contour Yachts produced the unique and well regarded Contour line of sailing trimarans throughout the 1980s and 1990s. These 3-hulled sailing craft offer excellent stability and speed compared to mono hull or catamaran sailboats.

Gampaha District is located in the west of Sri Lanka and has an area of . It is bounded by Kurunegala and Puttalam districts from north, Kegalle District from east, Colombo District from south and by the Indian Ocean from west. The borders of the district are the Ma Oya on the north, Kelani River on the south and 1,000 ft contour line on the east.

The visualization of such an optimization for walking speed, cadence, and step length can be expressed in the form of a contour map, in which parameter combinations that lie on the same contour line share the same cost of transport (cal/kg/m).Bertram, J. E., & Ruina, A. (2001). Multiple walking speed–frequency relations are predicted by constrained optimization. Journal of theoretical Biology, 209(4), 445-453.

Because gas floats above oil, the thin red contour line marks the gas/oil contact zone. Digital geologic mapping is the process by which geological features are observed, analyzed, and recorded in the field and displayed in real-time on a computer or personal digital assistant (PDA). The primary function of this emerging technology is to produce spatially referenced geologic maps that can be utilized and updated while conducting field work.

This branch curved away on the eastern side of the tramway and reached the quarry by a short incline. Halfway between Croesor village and the foot of the Blaen y Cwm incline, another incline branched off to the east. This incline climbed directly up the side of the valley. At the head of the incline, two tramways ran north and south along the contour line of the hill.

He selected scenes that he believed would reflect society at that time. He also used contour line drawings to vividly depict events, display emotions, and illustrate the story for the reader. His work acts like a camera, capturing moments of real life. Not only did his reports offer insights into the harsh realities of the time, they also reflected his deep sentiments toward his country and its people.

The Free University of Berlin supplies a QBO data set that comprises radiosonde observations from Canton Island, Gan, and Singapore. The plot below shows the QBO during the 1980s. Time-height plot of monthly-mean, zonal-mean equatorial zonal wind (u) in m/s between about 20 and altitude above sea level over a ten-year period. Positive values denote westerly winds and the contour line is at 0 m/s.

The extent of the geopolitical area covered by the term "Deccan" has varied throughout history. Geographers have attempted to define the region using indices such as rainfall, vegetation, soil type or physical features. According to one geographical definition, it is the peninsular tableland lying to the south of the Tropic of Cancer. Its outer boundary is marked by the 300 m contour line, with Vindhya- Kaimur watersheds in the north.

The Tanaka (relief) contours technique is a method used to illuminate contour lines in order to help visualize terrain. Lines are highlighted or shaded depending on their relationship to a light source in the Northwest. If the object being illustrated would shadow a section of contour line, that contour would be represented with a black band. Otherwise, slopes facing the light source would be represented by white bands.

Orange is a wine region and Australian Geographical Indication in the Central Ranges zone in the Australian state of New South Wales. It is named for the town of Orange and defined as the contiguous area that is above elevation within the City of Orange, Cabonne Shire and Blayney Shire. Grape vines were first planted commercially in 1980. The region is defined to be above the contour line.

The pessimistic, or clean prominence, assumes that the col is as high as it can be, i.e., its elevation is that of the higher contour line nearest the saddle. This gives a lower bound on the possible prominence of the peak, ignoring map error; inaccuracies in mapping lead to further uncertainties and a larger error bound. Optimistic prominence assumes that the col is as low as possible, yielding an upper bound value for the prominence.

The minute rounded embryonic 11 whorls scarcely rise above the level. The six whorls show a rather rapid increase, with a narrow flat shelf below the suture, thence sloping flatly to the shoulder carina, from which point the contour line descends perpendicularly. The base of the shell is inflated at the edge and flattened in the middle. The suture is deeply impressed between the narrow flat shelf below and the overhanging carina above.

P. A. Yeomans' Keyline Design system is critical of traditional contour plowing techniques, and improves the system through observing normal land form and topography. At one end of a contour the slope of the land will always be steeper than at the other. Thus when plowing parallel runs paralleling any contour the plow furrows soon deviate from a true contour. Rain water in these furrows will thus flow sideways along the falling "contour" line.

The Uhuklippen natural monument, March 2009 The Oberwald (351.2) is the heart of the Vogelsberg and is entirely wooded; its outer boundary roughly follows the 600 metre contour line. In outer areas of the Vogelsberg, by contrast, there is a tapestry of green pasture, arable fields and woodlands. Large parts of the Oberwald are protected. For example, the beech wood in the Taufstein Nature Reserve has been left to manage itself since 1906.

Balsam Mountain is one of the High Peaks of the Catskill Mountains in the U.S. state of New York. Its exact height has not been determined, so the highest contour line, , is usually given as its elevation. It is located in western Ulster County, on the divide between the Hudson and Delaware watersheds. The summit and western slopes of the peak are within the Town of Hardenburgh and its eastern slopes are in Shandaken.

The blue region is the feasible region. The tangency of the line with the feasible region represents the solution. The line is the best achievable contour line (locus with a given value of the objective function). A simple problem (shown in the diagram) can be defined by the constraints :x1 ≥ 0 :x2 ≥ 0 :x12 \+ x22 ≥ 1 :x12 \+ x22 ≤ 2 with an objective function to be maximized :f(x) = x1 \+ x2 where x = (x1, x2).

The gradient of the function is always perpendicular to the contour lines. When the lines are close together the magnitude of the gradient is large: the variation is steep. A level set is a generalization of a contour line for functions of any number of variables. Contour lines are curved, straight or a mixture of both lines on a map describing the intersection of a real or hypothetical surface with one or more horizontal planes.

In practice it will suffice to update W only : W(i + 1) = (1 – b)W(i) + bygT. This is the formula used in a simple 2-dimensional model of a brain satisfying the Hebbian rule of associative learning; see the next section (Kjellström, 1996 and 1999). The figure below illustrates the effect of increased average information in a Gaussian p.d.f. used to climb a mountain Crest (the two lines represent the contour line).

Its population is mainly commuters and their families, although farming is important to the local economy. The village has its own bowls and cricket clubs, and is within the catchment area of the Guilsborough schools. Lying on the contour line Cold Ashby is said to be the highest village in Northamptonshire. The British Ordnance Survey's first trig point, the triangular post used by surveyors, was erected on 18 April 1936 near Cold Ashby.

Not so fast, there was a 1/10th of an inch mismatch between the panels because of the sweep of the bodyside contour line. So, this idea was not feasible for production, but was OK for a prototype for proof of concept. To make the fiberglass rear roof, we stripped the top off of a Chevrolet Blazer and mated it to the top of the Ford pickup box. This roof retained the liftgate from the Blazer.

Extended from Irish territorial waters, and comprising an area of more than 100,000 km², the ICB stretches from Waterford Harbour to Slyne Head, and follows the 200 metre bathymetric contour line along its western side. Fishing by certain vessels and vessel types is restricted in this area, and vessels over 10 metres long are required to report their catch and movements to the Irish Fisheries' patrol. The Irish Naval Service is tasked with enforcing the special protection measures.

The contour line of the surface f(x,y,z)=x^4+y^4+z^4-1=0 (see picture) was traced by the marching method. Remark: The determination of a contour polygon of a parametric surface \vec x = \vec x(s,t) needs tracing an implicit curve in parameter plane.Geometry and Algorithms for COMPUTER AIDED DESIGN, p. 99 : Condition for contour points: g(s,t)=(\vec x_s(s,t)\times \vec x_t(s,t))\cdot \vec v=0.

Screenshot of a structure map generated by geological mapping software for an 8500ft deep gas & Oil reservoir in the Erath field, Vermilion Parish, Erath, Louisiana. The left-to-right gap, near the top of the contour map indicates a Fault line. This fault line is between the blue/green contour lines and the purple/red/yellow contour lines. The thin red circular contour line in the middle of the map indicates the top of the oil reservoir.

Because gas floats above oil, the thin red contour line marks the gas/oil contact zone. Directional drilling would be used to target the gas and oil reservoir. Directional drilling (or slant drilling) is the practice of drilling non-vertical wells. It can be broken down into four main groups: oilfield directional drilling, utility installation directional drilling (horizontal directional drilling), directional boring, and surface in seam (SIS), which horizontally intersects a vertical well target to extract coal bed methane.

Figure demonstrating the concept of topographic prominence: The prominence of a peak is the height of the peak's summit above the lowest contour line encircling it and no higher summit. For example, vertical arrows show the topographic prominence of three peaks on an island. A dotted horizontal line links each peak (except the highest) to its key col. The dividing line between a mountain with multiple peaks and separate mountains is not always clear (see also Highest unclimbed mountain).

Geological mapping software displaying a screenshot of a structure map generated for an 8500ft deep gas & Oil reservoir in the Earth field, Vermilion Parish, Erath, Louisiana. The left-to-right gap, near the top of the contour map indicates a Fault line. This fault line is between the blue/green contour lines and the purple/red/yellow contour lines. The thin red circular contour line in the middle of the map indicates the top of the oil reservoir.

Screenshot of a structure map generated by Contour map software for an 8500ft deep gas & Oil reservoir in the Earth field, Vermilion Parish, Erath, Louisiana. The left-to-right gap, near the top of the contour map indicates a fault. This fault line is between the blue/green contour lines and the purple/red/yellow contour lines. The thin red circular contour line in the middle of the map indicates the top of the oil reservoir.

The drainage basin of Grassy Island Creek from its source downstream to the contour line is designated as a High-Quality Coldwater Fishery and a Migratory Fishery. From this point downstream to its mouth, the drainage basin is designated as a Coldwater Fishery and a Migratory Fishery. Wild trout naturally reproduce in the creek from its headwaters downstream to its mouth. As of the early 2000s, some noxious weeds have been introduced into the watershed of Grassy Island Creek.

From these contours, a sense of the general terrain can be determined. They are used at a variety of scales, from large-scale engineering drawings and architectural plans, through topographic maps and bathymetric charts, up to continental- scale maps. "Contour line" is the most common usage in cartography, but isobath for underwater depths on bathymetric maps and isohypse for elevations are also used. In cartography, the contour interval is the elevation difference between adjacent contour lines.

Screenshot of a structure map generated by Contour map software for an 8500ft deep gas & Oil reservoir in the Erath field, Vermilion Parish, Erath, Louisiana. The left-to-right gap, near the top of the contour map indicates a Fault line. This fault line is between the blue/green contour lines and the purple/red/yellow contour lines. The thin red circular contour line in the middle of the map indicates the top of the oil reservoir.

Topographic prominence of three peaks located in Maine, USA, all near the higher Great Pond Mountain. Red triangles mark the four peaks, the lowest contour line encircling each of the three lower peaks are shown in black and the green dots mark the key cols that mark the starting point of prominence. The prominences are Atkins Hill: 430 − 310 = 120 ft, Cave Hill: 570 − 530 = 40 ft, Mead Mountain: 671 − 530 = 141 ft. The parent peak of each peak is Great Pond Mountain.

A horizontal directional drill in operation A structure map generated by contour map software for an gas and oil reservoir in the Erath field, Vermilion Parish, Erath, Louisiana. The left-to-right gap, near the top of the contour map indicates a fault line. This fault line is between the blue/green contour lines and the purple/red/yellow contour lines. The thin red circular contour line in the middle of the map indicates the top of the oil reservoir.

The word isogram ( ' "writing or drawing") was proposed by Francis Galton in 1889 as a convenient generic designation for lines indicating equality of some physical condition or quantity,Oxford English Dictionary; see also: Nature, 40, 1889, p.651. though isogram can also refer to a word without a repeated letter. An isogon (from or gonia, meaning 'angle') is a contour line for a variable which measures direction. In meteorology and in geomagnetics, the term isogon has specific meanings which are described below.

The Vogelsang lies southeast of Meschede in the natural region unit of the Upper Ruhr Basin (Oberruhrgesenke) (335.0). Isolation and prominence from TK 25 with assistance of Elevation Contours in Google Maps; the gap falls at least below the 480 m contour line Martin Bürgener: Geographische Landesaufnahme: The natural region units on Sheet 110 Arnsberg. Bundesanstalt für Landeskunde, Bad Godesberg, 1969. → Online-Karte (PDF; 6,1 MB), mit Westteil der Untereinheit Plackweghöhe (Plackwald) Martin Bürgener: Geographische Landesaufnahme: The natural region units on Sheet 111 Arolsen.

The one metre above mean sea level contour line runs roughly parallel to the river; the municipality's interior is characterised by flat or gently rolling grasslands and woodlands at about 10–15 metres above mean sea level. Apart from river IJssel, several more streams flow through the municipality's territory. They are called wetering ("drainage waterway") and are amalgamations of natural streams gradually channelised from the 18th century onwards and specifically dug canals . From west to east, these are Zandwetering, Soestwetering, Groote Vloedgraven, Oude Wetering and Nieuwe Wetering.

Mappers may prepare digital elevation models in a number of ways, but they frequently use remote sensing rather than direct survey data. Older methods of generating DEMs often involve interpolating digital contour maps that may have been produced by direct survey of the land surface. This method is still used in mountain areas, where interferometry is not always satisfactory. Note that contour line data or any other sampled elevation datasets (by GPS or ground survey) are not DEMs, but may be considered digital terrain models.

The district boundaries are curved and irregular, generally following those of the park itself. It is bordered by Spring Street on the north and Circular Street down to its intersection with Park Place. It follows the elevation contour line on the west, excluding some of the buildings on Broadway southwest of the park, and then joins Broadway south of Union Avenue, back to its northwest corner at Spring Street. The original historic district included some houses on Circular and Spring Streets and Whitney Place.

To the north are the Mosisberg and the Eschkopf (jeweils 609 m). From the Hortenkopf it is possible to walk to Leimen, Kaiserslautern- Mölschbach, Elmstein and via the forest lodges of Taubensuhl and Heldenstein almost as far as Neustadt on continuous hill ridges without dropping below the 450 metre contour line. At the Hortenkopf the main watershed turns southwest towards Gräfenstein Castle. On the southwestern flank of the Hortenkopf rises the northern headstream of the Wieslauter, which - subsequently as the Lauter – flows directly into the River Rhine.

The canal had been built as a contour line, following exactly a particular altitude; in this manner, it had avoided the use of locks at the expense of having to adopt a circuitous route between its destinations. During the reconstruction works, many of the loops and sharper turns which had been taken by the course of the canal were eased, often via the use of earthworks, as the higher-speed railway was less tolerant of sharp curves but more able to accommodate the presence of mild gradients.

Michelangelo did not take a clear side in the debates, but did underscore a component which he believed to be essential to both painting and sculpture, called disegno. Disegno in Renaissance times largely referred to "the conception of a work." The understanding and use of the term was also, however, influenced by the idea of drawing as the foundation of art. Vasari and with Benvenuto Cellini, also asserted that the ability to render an accurate contour line were technical skills that benefited both painting and sculpture.

Himmelfarb initially focused on black-and-white ink drawings and prints of "piled-up complexity" that critics related to surrealist automatic drawing or magic- realism. In enigmatic works as large as four by eight feet, a restless, wiry contour line created a dynamic, shifting focus from macrocosm to microcosm, pattern to image, and abstraction to figuration, as animals, people, plants and structures emerged and de-materialized into an edge-to-edge, interlocking tapestry of organic and geometric shapes.Brunetti, John. “Revelation Through Concealment: the Elusive Nature of John Himmelfarb’s Prints,” John Himmelfarb website, Essays, 2000.

Meadmore's work was recognised for use of common materials such as canvas, plywood, sash cord, leather and steel rods. and Grant Featherston (designer of the "Contour" line that used bent plywood, which was moulded to the human form).Featherston (1922–1995), influenced by his early employment at glass and lighting manufacturing companies, launched his first furniture line in 1947 with the assistance of his wife, Claire Featherston (nee Skinner) and architect, Robin Boyd. Featherston Contract Furniture opened in 1956 (Featherston Contract Interiors from 1958) with their furniture advertised as beautiful, functional and technologically advanced.

It has been found from the western and southwestern Amazon Basin of Brazil west to the Andes foothills of southeastern Colombia, eastern Ecuador and Peru, and northern Bolivia. Its area of occurrence is essentially delimited by the Caquetá-Japurá, Solimões, Amazon and Madeira Rivers, and the 300 meter contour line towards the Andes. But its precise distribution is very little-known; most populations were observed by people travelling along the rivers in its range. Most of the northern limit of its range runs along the middle Amazon River, or Solimões.

In the 1970s, the Oregon Legislature passed a law against filling Smith or Bybee lakes below a contour line above mean sea level except to enhance fish and wildlife habitat. Plans for a Willamette River Greenway project proposed by Oregon Governor Tom McCall in the late 1960s called for park and recreation areas along the Willamette and many of its tributaries but ignored the slough. Some planners argued that the slough was so filthy that more industry was all it was good for. They portrayed cleanup as a lofty but impractical goal.

Naifeh and Smith (2011) p. 281 According to van Gogh himself, the inspiration for the strong contour line was a woodcut after Millet, La grande bergère assise (left). Later, at Arles, he made a painting, The Shepherdess, F699, of the same subject. However, Hulsker thought the strongest influence was Bargue's Exercices au Fusain (Exercises in Charcoal Drawing), part of his celebrated Cours de Dessin (Drawing Course) published by Goupil (left), which Tersteeg had lent van Gogh in September 1880 and which van Gogh had said in a letter immediately preceding he had completed 'several times'.

Local tourism information describes a popular walk in the area of Bontddu: :'follows the 100 metre contour line along the estuary to the East of Borthwnog. Directly behind us walk up into the RSPB (Garth Gell) reserve and on up toward Cwm Mynach and beyond to the wilds of the Harlech Dome. Bear left from the latter path and double back behind the village of Bontddu and join the old drovers track across to Pont Scethin which allegedly was the scene of many highway robberies in the 17th century'.

Because gas floats above oil, the thin red contour line marks the gas/oil contact zone. Geologic modelling, geological modelling or geomodelling is the applied science of creating computerized representations of portions of the Earth's crust based on geophysical and geological observations made on and below the Earth surface. A geomodel is the numerical equivalent of a three-dimensional geological map complemented by a description of physical quantities in the domain of interest. Geomodelling is related to the concept of Shared Earth Model; which is a multidisciplinary, interoperable and updatable knowledge base about the subsurface.

A pantograph connected to a pencil produced within a few minutes a "grand trait", a contour line on a piece of paper. With the help of a second scaling down pantograph, the basic features of the portrait were transferred from this sheet in the form of dotted lines to a copper plate which had previously been prepared with a ground for etching. One week later the sitter received an etched plate and twelve little prints.Physionotraces: galerie de portraits, de la Révolution à l’Empire Not only this device, but also the aquatint prints, are called physionotraces.

The name probably derives from either "Ath Gabha" (the "ford of the smith" in Irish, or "Smithford" to completely anglicize it) or "Áth Gó" the "ford of the water" or the ford leading to the sea. The land immediately to the west of Mileys Bridge (see below) is quite wet despite having been drained both recently and earlier. In the Ordnance Survey map of 1840, the contour line suggests a partially or permanently wet area. This would lend credence to the name being derived from the "ford of the water".

Of course, these hills are much lower and do not reach the 200-metre contour line. Of the higher, say up to uplands, the northern foothills of Deister and Bückeberge extend farther north than the eastern Wiehen range. However, it is also true that the highest part of the Wiehen Hills at Lübbecke has the most northerly hill over 300 metres in Germany. The Heidbrink, at almost 320 metres high, is also the northernmost "three-hundred" on the European continent between the central Ural Mountains and the Atlantic, i.e.

Since 2007, it is allowable to use the Energy-Networks-Association (ENA) Recommendation S34 ('A Guide for Assessing the Rise of Earth Potential at Substation Sites') to calculate the Hot-Zone. This is now defined as a contour-line marking where the ROEP exceeds 430V for normal-reliability power lines, or 650V for high-reliability lines. The 'Zone' extends in a radius from any bonded metalwork, such as the site earth electrode system or boundary fence. This may effectively reduce the overall size of the Hot-Zone compared to the previous definition.

Balsam Lake Mountain is one of the Catskill Mountains, located in the Town of Hardenburgh, New York, United States. It is the westernmost of the range's 35 High Peaks. Its exact height has not been determined, but the highest contour line on topographic maps, , is usually given as its elevation. Located within the Balsam Lake Mountain Wild Forest management unit of the Catskill Park Forest Preserve, in the late 19th century its summit became the site of the first fire lookout tower in the state, operated by members of a nearby sportsmen's club.

The line was routed in such a way as to be difficult operationally. It is often described as a “contour line” implying constant curvature to maintain easy gradients, but in fact the gradients are still severe. The proprietors had no intention of operating the railway, intending to sell it to one of the established lines. Finding the LSWR reluctant to take it on, they obtained Parliamentary powers in 1854 to extend northwards to Shalford, on the South Eastern Railway's route to Redhill, with the possibility of that Company getting access to Portsmouth.

The suburbs of High Salvington and Findon Valley climb the lower slopes of the Downs, reaching up to the contour line, whereas the highest point in the borough reaches at Cissbury Ring. Land at Cissbury Ring and the adjacent publicly owned Worthing Downland Estate together form a area of open access land within the borough. Further high points are at West Hill (139m) north-west of High Salvington and at Highdown Hill (81m) on the boundary with Ferring. Cissbury Ring forms the only Site of Special Scientific Interest in the borough.

The themes are inspired by the author's experience and perceptions (two worlds: deep inner and specific outer), which freely wind through the author's work. He has a characteristic sense of the surface composition, a distinctive contour line, symbolic colourfulness and, in particular, characteristic fluidity of forms, adding organic dynamics to the depicted objects. His landscape paintings often reflect fascination by the magic and mystique of the forest, with an almost gloomy atmosphere of forest mists. Hauschka is fascinated by spaces of a modern city which speak through their history.

Those multi-ovals are non-analytical figures with a discontinuous second derivative of the contour line (the curvature). Hence, generally speaking, the trajectories of their centers of curvature are also non-analytical and, within the RKMs' geometry, have to have singular points. In relation to the piston, the trajectory of the power shaft axis has corner points, which correspond to extreme positions of the piston as related to the working chamber. Those corners, which represent singular points of the power shaft's trajectory, cannot be avoided or rounded to provide for the kinematically closed functioning of the gear.

It is bisected by the Schwarzbach and Moosalb rivers. To the southwest other ridges separate the valleys of the Merzalbe and the headstreams of the Wieslauter. It is therefore possible to walk from Neustadt an der Weinstraße to Leimen or Kaiserslautern- Mölschbach without dropping below the 450 metre contour line. North of the line from Hochspeyerbach to Speyerbach the highest points are the 570.8 m high Drachenfels and the Hoher Stoppelkopf (Stoppelkopf; 566.2 m). In the triangle formed by the Isenach to the north and German Wine Route to the east are other hills over 500 metres in height.

This swale concept has also been popularized as a rainwater harvesting and soil conservation strategy by Bill Mollison, Geoff Lawton, and other advocates of permaculture. In this context it is usually a water-harvesting ditch on contour, also called a contour bund. A natural swale Swales as used in permaculture are designed to slow and capture runoff by spreading it horizontally across the landscape (along an elevation contour line), facilitating runoff infiltration into the soil. This type of swale is created by digging a ditch on contour and piling the dirt on the downhill side of the ditch to create a berm.

Sketch of the canal The Cromford Canal ran from Cromford to the Erewash Canal in Derbyshire, England with a branch to Pinxton. Built by William Jessop with the assistance of Benjamin Outram, its alignment included four tunnels and 14 locks. From Cromford it ran south following the contour line along the east side of the valley of the Derwent to Ambergate, where it turned eastwards along the Amber valley. It turned sharply to cross the valley, crossing the river and the Ambergate to Nottingham road, by means of an aqueduct at Bullbridge, before turning towards Ripley.

Slide Mountain is the highest peak in the Catskill Mountains of the U.S. state of New York. It is located in the town of Shandaken in Ulster County. While the contour line on topographic maps is generally accepted as its height, the exact elevation of the summit has never been officially determined by the U.S. Coast and Geodetic Survey, and many informal surveys suggest the mountain may actually top 4,200 feet (1,280 m) above sea level. While it was not identified as the range's highest peak until the late 19th century, it has played a prominent role in Catskill history.

Site of the Medieval village of Upper Ditchford Upper Ditchford is an abandoned village to the west of the Fosse Way between Moreton-in-Marsh and Stretton on Fosse, now in the county of Gloucestershire in England but formerly located in Warwickshire. It has been scheduled as an ancient monument. It is located approximately a mile north of the hamlet of Aston Magna and 1½ miles to the east of Paxford on the 100m contour line. This is the site of one of the many villages that were abandoned or removed as part of the 19th century land enclosure acts.

Example of topographic profile A topographic profile or topographic cut is a representation of the relief of the terrain that is obtained by cutting transversely the lines of a topographic map. Each contour line can be defined as a closed line joining relief points at equal height above sea level. It is usually drawn on the same horizontal scale as the map, but the use of an exaggerated vertical scale is advisable to underline the elements of the relief. This can vary according to the slope and amplitude of the terrestrial relief, but is usually three to five times the horizontal scale.

Clines can be portrayed graphically on maps using lines that show the transition in character state from one end of the geographic range to the other. Character states can however additionally be represented using isophenes, defined by Ernst Mayr as “lines of equal expression of a clinally varying character”. In other words, areas on maps that demonstrate the same biological phenomenon or character will be connected by something that resembles a contour line. When mapping clines therefore, which follow a character gradation from one extreme to the other, isophenes will transect clinal lines at a right angle.

Although Leykina Island appears in Russian maps (Russian Hydrographic Office chart no 11142), it is not listed in the British Admiralty sailing directions. The Admiralty pilot describes the charted location of the island as ‘doubtful’. A British yachtsman visiting the area recently failed to find Leykina Island, being able to discern only: "...A ring of small breakers clearly demarcated what I took to be the 5-metre contour line as the seabed shoaled towards where the island should be." Leykina might be an island of the Russian Arctic that has eroded away and disappeared in recent times, like Semyonovsky, Figurina, Vasilievsky and Merkuriya.

Contour line of sforzati (bars 16–45) after Leichtentritt Leichtentritt believes that in fast tempo the sforzati climaxes in bars 16–45 can be perceived as a coherent contour line.Leichtentritt, p. 103 Again, as in Op. 10, No. 1, Chopin achieves powerful sound effects with arpeggios in tenths on diminished seventh chords. After the climax, , con forza (45–47), a more transparent bridge leads to the return of the A section which recapitulates the first two eight-bar periods extending the cadence by four extra bars, increasing to and preparing the raging coda, con più fuoco possibile (as fierily as possible).

Its roads feature a happy medium between the sterile, parallel streetscapes of Ringwood and the circular, 'contour-line' style streets found in neighbouring Park Orchards. Ringwood North is a surprisingly hilly area, which is especially evident around the aptly named Loughnan's Hill area and the infamously steep Glenvale Road. Glenvale Road also happens to mark the boundary between Ringwood North and Donvale and also the boundary between Maroondah and Manningham. It was the scene of a major car accident several years ago, in which a Holden HQ one- tonne utility carrying a large load of bricks overturned upon making its descent.

Several U.S. states and territories have not yet seen ascents of all their counties. The U.S. county highpointers' club rules, as described here, are slightly stricter than state highpoint rules. Many counties, especially flat and low-lying ones, have not been fully surveyed and thus have no single defined highest point, just multiple areas with the same highest contour line. In order to claim to have successfully climbed the county's highest point, then, it is necessary to visit all those areas, unless one can clearly be ruled out by line of sight from another one or by virtue of having been graded or excavated.

The site is located approximately 15 minutes on full from Okaya Station on the Chuo Main Line railway in the northern portion of Suwa Basin in central Nagano Prefecture at an altitude of 830 to 860 meters. The site measures approximately 150 meters east-west by 250 meters north-south, with three groups of residences along the contour line of the slope. The foundations of seven pit dwellings from the early Jōmon period (4000–2500 BCE), 58 from the middle Jōmon period (3000–2000 BCE), 8 from the late Jōmon period (2000–1000 BCE), and 21 from an undetermined period were discovered. The site also included a number of tombs.

To the south and east the hill is bound by the Grand Union Canal (Paddington branch), which runs roughly along the contour line. To the south west lies Perivale Wood Local Nature Reserve, run and maintained by the Selborne Society. A scenic spot on the Capital Ring in the summer months, Horsenden Hill offers fine views across west London, northwest London and beyond; places visible include Harrow on the Hill, the new Wembley Stadium, Northala Fields, planes coming in to land at Heathrow Airport, and on a clear day, the Home Counties of Surrey, Berkshire and Buckinghamshire. Two golf courses cover parts of the hill on the south and east sides.

Because gas floats above oil, the thin red contour line marks the gas/oil contact zone. Reservoir engineers could use the map as a part of their well drill planning. Reservoir engineering is a branch of petroleum engineering that applies scientific principles to the fluid flow through porous medium during the development and production of oil and gas reservoirs so as to obtain a high economic recovery. The working tools of the reservoir engineer are subsurface geology, applied mathematics, and the basic laws of physics and chemistry governing the behavior of liquid and vapor phases of crude oil, natural gas, and water in reservoir rock.

Video loop of isallobars showing the motion of a cold front An isobar (from or baros, meaning 'weight') is a line of equal or constant pressure on a graph, plot, or map; an isopleth or contour line of pressure. More accurately, isobars are lines drawn on a map joining places of equal average atmospheric pressure reduced to sea level for a specified period of time. In meteorology, the barometric pressures shown are reduced to sea level, not the surface pressures at the map locations. The distribution of isobars is closely related to the magnitude and direction of the wind field, and can be used to predict future weather patterns.

Accepting the proposal of Ni Kuan (:zh:兒寬), in 111 BCE Emperor Wu commissioned Er to lead the project of creating extensions to the Zhengguo Canal that could irrigate nearby terrain elevated above the main canal.Needham (1986d), 286. Since a large amount of silt had built up over time at the bottom of the Zhengguo Canal (causing flooding), in 95 BCE another project was initiated to tap irrigation waters from further up the Jing River, requiring the dredging of a new long canal following a contour line above the Zhengguo. The Han state also maintained a system of dikes to protect farmland from seasonal floods.

Because gas floats above oil, the thin red contour line marks the gas/oil contact zone. In the oil and gas industry, reservoir modeling involves the construction of a computer model of a petroleum reservoir, for the purposes of improving estimation of reserves and making decisions regarding the development of the field, predicting future production, placing additional wells, and evaluating alternative reservoir management scenarios. A reservoir model represents the physical space of the reservoir by an array of discrete cells, delineated by a grid which may be regular or irregular. The array of cells is usually three- dimensional, although 1D and 2D models are sometimes used.

The volcano boasts an ice cap on its summit, and radar imaging of the rock beneath the ice has shown that the mountain's flat-topped summit is not just attributable to the ice cap, but the top of the mountain is flat as well. Beneath the summit ice cap lies an ice-filled volcanic crater that rises at an elevation of and a topographic prominence of . Except for minor irregularities caused by erosion, any contour line drawn is practically a circle. Hoodoo Mountain consists of a balanced lava dome in diameter and throughout most of its history, it has been influenced by glacial ice, causing several periods of subglacial eruptions and interactions between volcanic activity and ice sheets.

The Roman-Byzantine period (2nd–7th century CE) is the uppermost stratum in Area I. Five houses of the Roman-Byzantine period can be distinguished, some of them with elaborate room arrangements. A stone-paved street following the contour line of the slope divided the buildings into a western and an eastern section. A thick wall of dressed stones constructed with stretchers and headers, which is visible halfway down the slope to the east of the tall, suggests that the settlement was fortified. In fact, it is possible that the fortification of such a densely inhabited settlement was necessary in the 3rd/4th century when the political situation in Palestine became unstable.

A contour canal is an artificially-dug navigable canal which closely follows the contour line of the land it traverses in order to avoid costly engineering works such as boring a tunnel through higher ground, building an embankment over lower ground, or constructing a canal lock (or series of locks) to change the level of the canal. Because of this, these canals are characterised by their meandering course. In the United Kingdom, many of the canals built in the period from 1770 to 1800 were contour canals - for example, the Oxford Canal. Later canals tended to be much straighter and more direct - a good example is the Shropshire Union Canal engineered by Thomas Telford.

The sculpture consists of three serpentine sheets of steel standing 94 feet long and 15 feet high, each comprising two identical conical/elliptical sections, inverted relative to each other overall. The steel plates are 2 inches thick and the piece, as often in Serra's work, adapts itself to its environment.There is an aerial view in Richard Serra sculpture: forty years, Kynaston McShine, Lynne Cooke, Museum of Modern Art, New York 2007, p.308 It is closely related to other outdoor installations such as the double ribbons of Sidewinder (1999), on the lawn adjacent to the curving drives at Leonard Riggio’s home in Bridgehampton, New York,See the adjustable aerial view from Google Earth and the single ribbon following the contour line of “Contour 290” (Glenstone, 2004).

Topographic prominence is a more difficult to estimate than topographic elevation, requiring surveys of each contour line around a peak, and therefore lists using prominence are subject to revision. Although many of the islands' largest mountains, including Ben Nevis, Carrantuohill, Scafell Pike and Snowdon, are Marilyns, many other large peaks such as Cairn Gorm, a number of Munros, and well-known hills such as Bowfell, the Langdale Pikes and Carnedd Dafydd, are not Marilyns because they do not have sufficient height relative to the surrounding terrain (i.e. they have taller "parents"). Not all Marilyns are even hills in the usual sense: Crowborough () sits in a town, whilst Bishop Wilton Wold highest point of the Yorkshire Wolds () lies alongside the A166 road.

The Saw Kill grew from one of the many tributaries of Lake Albany, a proglacial lake that filled most of the Hudson Valley north of the Hudson Highlands centered on the present-day location of Albany during the Wisconsinan glaciation, the last Ice Age, 12–15,000 years ago. At the time of its existence the lake filled the valley up to what is now the contour line, roughly where the Saw Kill today drops through a series of cascades to Camp Rising Sun in Red Hook. The retreat of the lake as it flowed southward to become today's river left the glacial outwash plain the stream flows through from there to the river's current escarpment at Annandale and eventually into the Hudson.

An isoquant (derived from quantity and the Greek word iso, meaning equal), in microeconomics, is a contour line drawn through the set of points at which the same quantity of output is produced while changing the quantities of two or more inputs. While an indifference curve mapping helps to solve the utility- maximizing problem of consumers, the isoquant mapping deals with the cost- minimization problem of producers. Isoquants are typically drawn along with isocost curves in capital-labor graphs, showing the technological tradeoff between capital and labor in the production function, and the decreasing marginal returns of both inputs. Adding one input while holding the other constant eventually leads to decreasing marginal output, and this is reflected in the shape of the isoquant.

In a smooth, grassy valley, a location denominated the keypoint is identified at which the lower and leveller portion of the primary valley floor suddenly steepens higher. The keyline of this primary valley is determined by pegging a contour line that conforms to the natural shape of the valley through the keypoint, such that all points on the keyline are at the same elevation as the keypoint. Contour plowing both above and below the keyline and parallel to it ipso facto is "off-contour", but the developing pattern tends to drift rainwater runoff away from the center of the valley and, incidentally, prevent erosion of its soil. Cultivation conforming to Keyline design for ridges is done parallel to any suitable contour, but only on the high side of the contour's guide line.

He also had been the chief engineer on the project to electrify the New Haven Railroad out of New York City. Once Williams came to Murray to make his proposal in 1923, Murray and his partner, Henry Flood, Jr., pored over topographic maps of the region and worked on estimates. It looked as if they might be able to generate enormous power at very low cost. It was said that here, as Murray looked over a topographic map of the Saluda River Valley, his eyes glanced at the contour line. He followed the line as it meandered through the valley and noticed that the contour did not touch a railroad, and its highest elevation was never less than 40 feet (12 m) below the divide separating the Saluda Valley from the neighboring Broad River Valley.

Isohyetal map of precipitation Meteorological contour lines are based on interpolation of the point data received from weather stations and weather satellites. Weather stations are seldom exactly positioned at a contour line (when they are, this indicates a measurement precisely equal to the value of the contour). Instead, lines are drawn to best approximate the locations of exact values, based on the scattered information points available. Meteorological contour maps may present collected data such as actual air pressure at a given time, or generalized data such as average pressure over a period of time, or forecast data such as predicted air pressure at some point in the future Thermodynamic diagrams use multiple overlapping contour sets (including isobars and isotherms) to present a picture of the major thermodynamic factors in a weather system.

The prominence of a peak may be defined as the minimum height necessary to descend to get from the summit to any higher terrain, which can be calculated for a given peak in the following way: for every path connecting the peak to higher terrain, find the lowest point on the path; the key col (or key saddle, or linking col, or link) is defined as the highest of these points, along all connecting paths; the prominence is the difference between the elevation of the peak and the elevation of its key col. See Figure 1\. Under this definition, the prominence of Mount Everest is not defined as there is no higher point. An alternative definition, otherwise equivalent, is that the prominence is the height of the peak's summit above the lowest contour line encircling it, but containing no higher summit within it.

Situated on a 60-hectare site in 2006 by mountain-biking organisation DirTraction and the contractor company RMC Pte Ltd, the current Mountain Bike trail is ten-kilometre long and offers several climbs as well as a challenging contour line rides. The trail hosted the Phat Tyre Sunday Mountain Bike Race in 2007, involving more than 260 participants from Indonesia, Malaysia, the Philippines and Singapore. The trail system is being upgraded to make it even more technically challenging, and in 2008, the bike park hosted BikeAsia100, a 100km mountain biking marathon race, and subsequently eneloop mountain bike carnival in 2009 with its marquee event, a 100km night mountain biking marathon race, one of the first around the region. These mountain biking marathon event attracted riders from the region, bringing close to 700 participants in the 2009 edition.

Nonetheless, early in the first decade of the 17th century, he was appointed by Sir Hugh Myddelton as surveyor to the New River project, which successfully directed the course of a new man-made channel to bring clean water from Chadwell Spring at Ware, Hertfordshire, to Islington, London. Although the distance in a straight line from Ware to London is only slightly more than , the project required a high degree of surveying skill on Wright's part as it was necessary for the river to take a route of over 40 miles following the contour line on the west side of the Lea Valley. As the technology of the time did not extend to large pumps or pipes, the water flow had to depend on gravity through canals or aqueducts over an average fall of 5.5 inches a mile (approximately 8.7 centimetres per kilometre). Work on the New River started in 1608 – the date of a monument at Chadwell Spring – but halted near Wormley, Hertfordshire, in 1610.

On top of a hill around 500 meters above the sea level, in the northern part of the Cërmjan village, in one geostrategic position, the Suka e Cërmjanit is positioned, an archeological site known also as the Castel of Cërmjan. The fortification walls follow the contour line of the rocky terrain configuration in a surface of around 1.3 hectares. The Suka e Cërmjanit castle has all the features of a fortified settlement of the Late Antique date, although based on the earlier archaeological documentation, remains of a prehistoric date, respectively the occupation commencing from Iron Period continued uninterrupted until the Early Medieval Period. The castle has a distinctive site setting while can visually communicate with; Dollc and Jerina castles of Klina up north, with Radavc and Jablanica of Peć castles up northwest, Đakovica is visible in the horizon towards southwest, fortress of Zatrič is visible toward north-northeast and toward the south the countryside of hills and fields are visible up to the verge of the Pashtrik Mountains.

Retrieved 2016-08-18. In 2015, one million acres of the Hanna Shoal region (defined by the 40-meter depth contour line) were removed from consideration for future oil and gas leasing activities.Boots, M. and Utech, D., "President Obama Protects Untouched Marine Wilderness in Alaska", 2015-01-27. Retrieved 2016-08-18.Rosen, Y., "Chukchi Sea shoal newly closed to oil leasing is well known as biological hot spot", 2015-02-02. Retrieved 2016-08-18. In addition, the 2017–2022 Outer Continental Shelf (OCS) Oil and Gas Leasing Program Draft Programmatic Environmental Impact Statement (DPEIS) recognized the Hanna Shoal Walrus Foraging Area and Walrus Movement Corridor as Environmentally Important AreasBureau of Ocean Energy Management, "Outer Continental Shelf Oil and Gas Leasing Program: 2017-2022 Draft Programmatic Environmental Impact Statement" , March 2016. Retrieved 2016-08-18. So far, attempted oil and gas development near the shoal has been unproductive. In 2015, one well was completed at the Burger prospect, roughly 10 miles from the Hanna Shoal important area. That well was unsuccessful, and as of July 2016, oil companies have relinquished all but one lease in the Chukchi Sea.