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Topographic Feature

GIS Topo mapTopographic Map

Topographic Feature - The features of a map that represent the natural features of the earth's surface; representing relief. Those features collectively form a "model" of the surface.

 


Topographic Feature: Spatial representation of the surface features of a place or region on a map, indicating their relative positions and elevations.

In topographic feature A, the beam reaches the top of the slope facing the wave front before it reaches the slope base. Thus the upper beam is reflected to the receiving antenna before the lower beam, producing the layover effect.

The earth's topographic features range from about 9 km above this surface (Mount Everest) and to about 12 km below this surface (Mariana Trench).

The other major topographic feature of the Earth is the ocean basins. The ocean basins are made up of relatively young basaltic volcanic rock that was released from fissures along the mid-ocean ridge.

The first step in triangulation is to pick three topographic features that you can see and can identify on your map (mountains are ideal). Start with the first feature you have chosen and determine the bearing between you and it, as outlined above.

The analyst creates a module that defines dangerous topographic features, such as ridgelines, using the hydrological modeling functions.

The work consists in capturing topographic features in 3D based on photographs in the aerotriangulation database, according to ...

The most visible topographic feature is the giant far side South Pole-Aitken basin, which possesses the lowest elevations of the Moon.

Included on most nautical charts are depths of water, characteristics of the bottom, elevations of selected topographic features, general configurations and characteristics of the coast, the shoreline (usually the mean high water line), dangers, ...

Selecting advantageous topographic features (such as the crests of hills) will increase soil stability and decrease frost heave and the consistency of the soil will tend to be more firm.

While useful for general visualization purposes, it can be difficult to locate objects precisely on the terrain model by referencing topographic features (since these can all seem to look alike).

Download data from the FEMA Hazard Maps Website. (Geologic Hazards, Huricanes, Earthquakes, Physical and Topographic Features, etc.)
Download data from Federal Communications Commission (Cell Towers, Cellular Market Areas, Basic Trading Areas, etc.) ...

*** Automation: Any process whereby hardcopy cadastral, planimetric, or topographic features are converted into a digital format for use within a GIS.

planimetric The horizontal (x,y) locations of non-topographic features, such as rivers, lakes, buildings, roads, etc.

Degree of precision of the digital topographic information compared to its corresponding reference to the geodetic network. Accuracy of geometric representation assocaited with an entity and the real position of the corresponding topographic feature, ...

The features of the actual surface of the earth, considered collectively according to their form (for example, grassland, cultivated, desert, forest, swamp). A single feature, such as one mountain or one valley, is called a topographic feature.

A straight topographic feature of regional extent which is thought to represent crustal structure. A fault, line of sinkholes, straight stream stretch or a line of volcanoes can be considered linear features.
Lithification: ...

See also: Feature, Map, Surface, Elevation, Image