Terrain

The most common examples are used to derive slope or aspect of a terrain or curvatures at each location.

Climatic parameters are based on the modelling of solar radiation or air flow.

The most typical examples airlines of watersheds, stream patterns, ridges, break-lines, pools or borders of specific landforms.

A digital elevation model (DEM) or digital surface model (DSM) is a 3D computer graphics representation of elevation data to represent terrain or overlaying objects, commonly of a planet, moon, or asteroid.

DEMs are used often in geographic information systems (GIS), and are the most common basis for digitally produced relief maps.

Present-day altimetry and bathymetry . Data from the National Geophysical Data Center 's TerrainBase Digital Terrain Model .
Relief map of Sierra Nevada , Spain
A shaded and colored image (i.e. terrain is enhanced) of varied terrain from the Shuttle Radar Topography Mission . This shows an elevation model of New Zealand's Alpine Fault running about 500 km (310 mi) long. The escarpment is flanked by a vast chain of hills between the fault and the mountains of the Southern Alps . Northeast is towards the top.
3D rendering of a DTM of Tithonium Chasma on Mars