Terrain

Present-day Yird altimetry an bathymetry. Data frae the Naitional Geopheesical Data Center's TerrainBase Digital Terrain Model.

Terrain, or land relief, is the vertical an horizontal dimension o land surface. When relief is describit unnerwatter, the term bathymetry is uised.

Terrain is uised as a general term in pheesical geografie, referrin tae the lay o the land. This is uisually expressed in terms o the elevation, slope, an orientation o terrain featurs. Terrain affects surface watter flow an distribution. Ower a lairge aurie, it can affect wather an climate patterns.