On methods of the topography dynamics study and mapping

Abstract

The paper discusses the authors experience of geomorphological – geodetic methods application to studies and mapping the relief dynamics at mountain areas. In essence the methods consist in delineation of sites characterized with different intensity of predominant exogenous processes. Denudation and accumulation rates had been valued by sediment run-off at large territories, instrumental survey being carried out at the places of the most active dynamics. The collected data enable to compile a complex synthetic map, representing quantitatively changes in relief. When colour variant of the map being prepared, the colour background shows morphometric index which summarizes density and depth of dissection, slope gradient and their exposition (by points, «relief energy» index or other synthetic indices). Areal denudation and accumulation supposed to be shown by colour shade or various sets of hachures, linear and local processes-by conventional signs. Two black-and-white hachure maps illustrate the paper.