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More generally, a contour line for a function of two variables is a curve connecting points where the function has the same particular value. [2] 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. [3]
Topographic maps conventionally show topography, or land contours, by means of contour lines. Contour lines are curves that connect contiguous points of the same altitude . In other words, every point on the marked line of 100 m elevation is 100 m above mean sea level.
Since topographic maps typically show elevation using contour lines, the exact elevation is typically bounded by an upper and lower contour, and not specified exactly. Prominence calculations may use the high contour (giving in a pessimistic estimate [ 10 ] [ 11 ] ), the low contour (giving an optimistic estimate), their mean (giving a ...
A topographic profile or topographic cut or elevation profile 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. [1] It is usually drawn on the same horizontal scale as ...
Topographic maps display elevation above ground and are complementary to bathymetric charts. Bathymetric charts showcase depth using a series of lines and points at equal intervals, called depth contours or isobaths (a type of contour line). A closed shape with increasingly smaller shapes inside of it can indicate an ocean trench or a seamount ...
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.
Vertical distance or vertical separation is the distance between two vertical positions. Many vertical coordinates exist for expressing vertical position: depth, height, altitude, elevation, etc. Points lying on an equigeopotential surface are said to be on the same vertical level , as in a water level .
The nearest peak to Germany's highest mountain, the 2,962-metre (9,718 ft) high Zugspitze, that has a 2,962-metre (9,718 ft) contour is the 2,988-metre (9,803 ft) Zwölferkogel in Austria's Stubai Alps. The distance between the Zugspitze and this contour is 25.8 kilometres (16 mi); the Zugspitze is thus the highest peak for a radius of 25.8 ...