Capacity and direction changes in longshore sediment flow (with special reference to Pitsunda)

Abstract

Some results are given of long-term studies of the Pitsunda promontory coastal zone dynamics depending on changes in beach-forming debris discharge of the Bzyb River. Abrasion cycles are established (1926 to 1942 and 1959 to 1983) as well as sedimentation cycles from 1903 to 1926 and 1942 to 1959. Submarine canyons activity is supposed also to undergo cyclic changes.

Complex approach to sea coasts study makes clear many problems which seem difficult when one-sided approach used. It permits also to check up results obtained by various methods.