On the reciprocating evolution of the fluvial relief

Abstract

Running water is foremost among exogenic factors. The geomorphology usually deals with integral result of its activity averaged over some geological time intervals, thus assuming strictly progressive evolution of fluvial relief. Streams have a special kind of internal mechanics which have an effect on the process under any external f actors. Considering volume of matter involved and impact on topography, streams are on a par with endogenic forces and often excel the latter in results. Due to permanency of internal f actors and their inherent contradictions the relief occasionally comes to the states of so-called «self-regulation», «spontaneous development», «self-excitation» in the process of its evolution. Consequently the relief undergoes a complicate reciprocating evolution, it lives, functions and changes like a living organism.