Sea-level rise and coastal vulnerability: an assessment of Andhra Pradesh coast,India through remote sensing and GIS |
| |
Authors: | K Nageswara Rao P Subraelu T Venkateswara Rao B Hema Malini R Ratheesh S Bhattacharya A S Rajawat Ajai |
| |
Institution: | (1) Department of Geo-Engineering, Andhra University, Visakhapatnam, 530 003, India;(2) Department of Geography, Andhra University, Visakhapatnam, 530 003, India;(3) Marine and Earth Sciences Group, Space Applications Centre, Ahmedabad, 380 015, India |
| |
Abstract: | The eustatic sea-level rise due to global warming is predicted to be about 18 to 59 cm by the 2100 (IPCC 2007), which necessitates identification and protection of vulnerable sections of coasts. Assessment of vulnerability level of
Andhra Pradesh (AP) coast as an example is demonstrated in this study using five physical variables, namely coastal geomorphology,
coastal slope, shoreline change, mean spring tide range, and significant wave height. A coastal vulnerability index was prepared
by integrating the differentially weighted rank values of the five variables, based on which the coastline is segmented into
low-, moderate-, high-, and very high risk categories. About 43% of the 1,030-km-long AP coast is under very high-risk, followed
by another 35% under high-risk if the sea level rises by ~0.6 m displacing more than 1.29 million people living within 2.0 m
elevation in 282 villages in the region. |
| |
Keywords: | Sea-level rise Coastal vulnerability index Coastal risk assessment Andhra Pradesh coast |
本文献已被 SpringerLink 等数据库收录! |
|