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Advances in Civil Engineering
Volume 2016 (2016), Article ID 5642523, 10 pages
http://dx.doi.org/10.1155/2016/5642523
Research Article

GIS Based Approach for Vulnerability Assessment of the Karnataka Coast, India

Department of Applied Mechanics and Hydraulics, NITK, Surathkal, Mangaluru 575025, India

Received 16 November 2015; Accepted 17 April 2016

Academic Editor: Kirk Hatfield

Copyright © 2016 Akshaya Beluru Jana and Arkal Vittal Hegde. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The coastal zones are highly resourceful and dynamic. In recent times, increased events of tropical cyclones and the devastating impact of the December 2004 tsunami have brought forth the importance of assessing the vulnerability of the coast to hazard-induced flooding and inundation in coastal areas. This study intends to develop coastal vulnerability index (CVI) for the administrative units, known as talukas of the Karnataka state. Seven physical and geologic risk variables characterizing the vulnerability of the coast, including rate of relative sea level change, historical shoreline change, coastal slope, coastal regional elevation, mean tidal range, and significant wave height derived using conventional and remotely sensed data, along with one socioeconomic parameter “population,” were used in the study. A total of 298 km of shoreline are ranked in the study. It was observed that about 68.65 km of the shoreline is under very high vulnerable category and 79.26 km of shoreline is under high vulnerable category. Of the remaining shoreline, 59.14 km and 91.04 km are of moderate and low vulnerable categories, respectively.