Assessing Environmental Impact of Shoreline Changes Along the Odisha Coast Using DSAS and Satellite Imagery – A Study of Erosion and Accretion Patterns
A shoreline is nothing but a line interface existing between land and water known as shoreline. In this paper, the study has been conducted along the Odisha coast, India. The coastal districts in Odisha are Baleswar, Bhadrak, Ganjam, Jagatsinghpur, Kendrapara and Puri. In the present study, we calculate the shoreline changes in Odisha coast with help of USGS Earth Explorer satellite images of 1990, 2000, 2010, 2022. The Digital Shoreline Analysis System (DSAS) has been utilised to compute the rates of shoreline erosion and accretion. The End Point Rate (EPR) and Linear Regression Rate (LRR) techniques have been estimated to quantify the rates of coastal changes. In Odisha coastal districts, the area length is Ganjam (60.85 km), Puri (136.48 km), Jagatsinghpur (58.95 km), Kendrapara (83.55 km), Bhadrak (52.61 km), Baleshwar (87.96 km) and total area of Odisha coast is 480.40 km. The current study suggests that in order to remove the risk, adequate beach filling and projects should be implemented in the studied region. The erosion and accretion of coastal regions are caused by both natural and man-made processes, as well as event impacts. The study might be used to more sophisticated planning and development as well as the decision-making procedures utilised by natural disaster management authorities in the studied region.
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