Evaluation Of Shoreline Changes Around Northern And Southern Chennai Harbor Using Historical Satellite Data And Geospatial Approaches Along Coastal Watersheds

Abstract

The findings of shoreline variation analysis conducted from 1991 to 2022 in the vicinity of Chennai Harbor, focusing on erosion rates along the northern and southern regions revealed substantial variations in erosion rates, ranging from -1.66 m to -176.59 m in the north and from -1.11 m to -27.82 m near Adayar mouth in the south for a period of 31 years. The study findings highlight the dynamic character of coastal processes in the area and showed a notable retreat of the shoreline throughout the time frame i.e 1991-2022. The observed rates of erosion demonstrate how susceptible coastal regions are to both human activity and natural processes. The study underscores the need for continued monitoring and research to assess long-term trends in shoreline evolution and to inform adaptive management strategies in response to ongoing environmental changes. In order to evaluate long-term patterns in shoreline evolution and to provide adaptive management techniques in response to ongoing environmental and anthropogenic changes, the study emphasizes the use of modern techniques towards monitoring and assessing the coastal vulnerability. The results have significant implications for coastal policymakers, planners, and stakeholders, underscoring the criticality of adopting sustainable coastal development practises and efficient erosion mitigation techniques.