Erosion, Level of

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Erosion, Level of

 

(in Russian, bazis erozii), the level of a basin into which a stream of water empties. The general (or main) level of erosion is the level of the world ocean. The local (or temporary) level of erosion is that of flowing lakes, places where tributaries empty into the main river, and outcrops of solid rock that slow subsurface erosion of a river and that cause rapids to be formed. Changes in the height of the level of erosion (fluctuations of the sea level, secular movements of the earth’s crust) are followed by the cutting of a valley or by its becoming filled with river deposits.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.