Computation of Expected Total Water Levels along the East Coast of India

Extreme sea levels generated by strong tangential wind stress and normal atmospheric pressure gradients at the sea surface due to tropical cyclones were studied for the western sector of the Bay of Bengal (the east coast of India). The maritime states along the coast, hit by different intensities of...

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Bibliographic Details
Published in:Journal of coastal research 2010-07, Vol.26 (4), p.681-687
Main Authors: Jain, Indu, Rao, A. D, Jitendra, V, Dube, S. K
Format: Article
Language:English
Subjects:
Assessments
Bay of Bengal
Coastal environments
Coastal water
Coastal zone management
Coasts
Computation
Computer simulation
Cyclones
Marine
Mathematical models
Meteorology
Modeling
Research Papers
Sea level
Sea water
Statistical analysis
Storm surges
Storms
Surges
Sustainable development
Tides
total water level
Tropical cyclones
Tropical regions
Water levels
Waves
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Summary:Extreme sea levels generated by strong tangential wind stress and normal atmospheric pressure gradients at the sea surface due to tropical cyclones were studied for the western sector of the Bay of Bengal (the east coast of India). The maritime states along the coast, hit by different intensities of cyclones, are West Bengal, Orissa, Andhra Pradesh, and Tamil Nadu. Based on precise historical data for the period 1891–2007, statistical projections have been made on the probable intensities of tropical cyclones for various return periods. With the help of numerical models developed at Indian Institute of Technology Delhi, maximum probable surges along the coast were simulated. The local tide effect was considered in the computations as rise of sea level would be greater if the cyclone crosses the coast during high tide. The total water elevation is computed by linearly adding the local tide and wave setup to the surge simulated along the coast. In the present study, an assessment of cyclone risk and vulnerability was evolved, which is an important component of the information used to create sustainable local-level development action plans for preparedness and mitigation.
ISSN:0749-0208
1551-5036
DOI:10.2112/08-1170.1