State and Forecast of Development of the Shallow Sandy Coast of a Tidal Sea (A Case Study of Madagascar)

Abstract

Currently, most seashores are experiencing increased erosion and retreat. To a large extent, this applies to coasts subjected to the influence of high-amplitude sea tides, which is extremely negatively manifested on the accumulative coasts of oceanic islands. The problem of their dynamics, the theoretical foundations of which are still in the development stage, can only be solved on the basis of wide-regional studies. This study is aimed at elucidating the specific features of the dynamics of such a coast with a case study of the key region of a large oceanic island. The main reasons for its degradation are identified, recommendations are given for stabilizing the coastline, and the development trend according to the natural scenario is considered.