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ANALYSIS OF SHORELINE CHANGE IN COASTAL GOA: A STUDY OF GALGIBAG BEACH USING GEOSPATIAL TECHNOLOGIES

2022; Volume: 11; Issue: 1 (SPECIAL ISSUE) Linguagem: Inglês

10.31032/ijbpas/2022/11.1.1005

2277-4998

Siddhi Gaonkar, Nadaf Fm, Shri Chetan, Manju Desai, F Nadaf,

Geological and Geophysical Studies

Costas are dynamic entities interconnected with man-made and physical factors.The changes along the coastline are well adequate subjected to both short-term and long-run coastal processes.The latest available geospatial technologies have been efficient in providing the data sets from a historical time scale.The present study is focused on comparing the shoreline changes that occur at the Galgibag beach located in Canacona taluka of Goa by integrating fourcoastlines to identify and assess erosion and accretion of the different periods.DSAS analysis of the Galgibag coast is carried out from 1991 to 2020.Net Shoreline Movement (NSM), End Point Rate (EPR), and Linear Regression Rate (LRR) were used to calculate shoreline change rates.The analysis revealed shoreline retreat with an average EPR of 1.81m/year and an average NSM of 26.45mts.