ИСТИНА

Theoretical and methodical approaches to an assessment of substance streams transformation in mouths of the rivers are considered. For deltoid type of mouths methods of channels network structure formalization, based on ideas of elements of this network, knots of branches merge and channels bifurcation are offered. Ratios between characteristics of deltoid water channels structure, and also from characteristics of river runoff are received. Application of rivers orders concept (conditional orders of deltoid water channels) for an assessment of river deltas similarity (or systems of water channels within certain deltas) under the terms of water runoff dispersal from delta top to its sea edge is proved. Examples of use of the developed technology in relation to problems of studying of river runoff transformation processes in deltas of the Russian rivers are given.