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In modern mapping, a topographic map or topographic sheet is a type of map characterized by large-scale detail and quantitative representation of relief features, usually using contour lines (connecting points of equal elevation), but historically using a variety of methods.
A topographic map of Stowe, Vermont with contour lines This false-color satellite image illustrates topography of the urban core of the New York metropolitan area, with Manhattan at its center. Topography is the study of the forms and features of land surfaces .
Topographic prominence of three peaks located in Maine, US, 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.
For full definitions and explanations of topographic prominence, key col, and parent, see topographic prominence. In particular, the different definitions of the parent of a peak are addressed at length in that article. Height on the other hand simply means elevation of the summit above sea level.
The quality of being located on a continent. contour line. Also isoline or isopleth. A line marked on a topographic map which connects points of equal elevation above or below a specified reference datum. Multiple contour lines, each representing a different elevation, are depicted together to show the shape of the terrain within the map area. [3]
See topographic prominence. side valley sinkhole A crater formed when the roof of a cavern collapses, usually found in areas of limestone rock. [5] site The features of a place related to the immediate environment in which the place is located (e.g. terrain, soil, subsurface, geology, groundwater, etc.). [5] situation
The topographic isolation of a summit is the minimum distance to a point of equal elevation, representing a radius of dominance in which the peak is the highest point. It can be calculated for small hills and islands as well as for major mountain peaks and can even be calculated for submarine summits.
A topographic map is primarily concerned with the topographic description of a place, including (especially in the 20th and 21st centuries) the use of contour lines showing elevation. Terrain or relief can be shown in a variety of ways (see Cartographic relief depiction ).