SHORELINE CHANGE DETECTION BETWEEN KALLAR AND VAIPPAR COAST, TAMILNADU, INDIA, USING GEOSPATIAL TECHNOLOGIES

Abstract

Coastal zones are constantly undergoing wide changes in shape and environment due to natural as well as human development activities. recreational activities, waste disposal etc. The shoreline change study has become a matter of great concern in the recent years. The measurement of shoreline is a key factor in coastal zone construction. The traditional ground survey is time and cost consuming. An attempt has been made in this paper to evaluate the shoreline change study based on multi-temporal satellite data. The shoreline change information obtained from multi-temporal IRS 1D LISSIII and PAN within period of 5 years difference images registered in GIS environment. All multi-temporal shoreline change vectors provide quantitative information on the coastal hazard due to erosion and accretion. The changes are caused by heavy exploitation of heavy mineral sand, coastal erosion and accretion occurred in some local places. There are two zones namely Kallar and Vaippar vigorously undergoing coastal erosion. It shows that about 473 sq.km areas have been eroded between the north of Kallar and Sippikulam either due to natural process or by human influence.