Summary of Abstract Submission

Abstract Submission No. IO50-03-0042PresentationPoster

COASTAL GEOMORPHOLOGIC ANALYSIS OF ODISHA COAST, INDIA

Mani Murali.R*1, Dhiman .R**2

1 CSIR - National Institute of Oceanography, India
2 Indian Institute of Technology, Powai, Mumbai, India

ABSTRACT :

The coastal regions can be considered as a natural laboratory to assess the impacts of coastal interactions relative to erosion, accretion, beach morphology and sediment transport on coastal ecosystem and its effects. These interactions are one of the important sources of information for planners and policy makers. This study regarding the morphological changes at coastline as well as at beach area has been investigated along the parts of Odisha coast at east coast of India. We have assessed the coastline and beach area behaviour of Gahirmatha, Paradip coast and Hukitola bay in terms of erosion and accretion at a temporal scale of forty years since 1975. Satellite imageries were used to study the coastal geomorphology at decadal and annual scale. Eroded and accreted locations are spotted along the entire shoreline at different time interval. Between 1975 to 2014, Gahirmatha, Hukitola bay and Paradip coasts have experienced net erosion(accretion) of 535m (290m), 2186m (1214m) and 645m (490m) respectively. The total exposed beach area of study region has decreased significantly from 19.14 km^2 to 7.8 km^2 during the past forty years. This study concludes that the study region has undergone heavy erosion and this might be due to combination of various factors. Natural hazards and anthropogenic activities have contributed for these changes. These results may be useful to decision makers for integrated coastal zone management.