Uma abordagem sobre os processos erosivos na zona costeira do Distrito de Xai-Xai, praia de Xai-Xai- Praia de Chongoene

Abstract

In the processes that generate coastal erosion in the study area, marine, atmospheric and human factors converge. In general, it is the joint action of all these factors that results in coastal erosion and the various coastal forms, which differ from each other in their position in relation to sea level and in the predominant action of one or another agent. In order to determine the occurrence of erosion, erosion maps and interpretation of aerial photographs are elaborated, using the SARCCUS system. The relationships between precipitation, winds, waves, currents and man are carefully examined. To facilitate the understanding of the phenomenon of coastal erosion, it was important to identify and characterize the main geomorphological units of the study area and, depending on the characteristics identified, we sought to verify the susceptibility of these units to erosive agents. Based on the study carried out, it was found that the current levels of coastal erosion recorded in the study area are mainly due to anthropogenic action manifested by the removal of natural vegetation and destruction of the dunes. This problem directly multiplies the action of other morphodynamic agents such as water and wind.