Management of Coastal Erosion Using Remote Sensing and GIS Techniques (SE India)

Abstract

World wide, coastal erosion is recognized as a great threat for beach environment. Total control of coastal erosion is not feasible but it should not be ignored and needs timely management. Erosional activities have been significantly noticed along the coastal tract of Vembar and Kallar (Kallurani), South India. An attempt has been made here to delineate different zones based on their sand budget and erosion rate. Linear Imaging Self Scanning Sensor (LISS) III 2001 and Linear Imaging Self Scanning Sensor III and PAN merged data of the year 2001 have been utilized to identify the coastal geomorphological features, shoreline changes and river course changes. A Geographic Information System (GIS) software namely ArcGIS (9.1) has been used as a tool to delineate the coastal erosion hazard for proper planning and management of coastal developments. Beach profile studies have shown significant variation in the beach morphology. The study area has been categorized into five different zones in the GIS analysis based on the degree of coastal erosion and sediment dynamics namely (i) very high - Kalaignanapuram, (ii) high - Sippikulam (iii) medium - Periyasamypuram (iv) low - Vembar and Kallar (Kallurani) (v) very low - Pachayapuram.

Keywords

India Beach Erosion Hazard GIS Mapping

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