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Investigation on the Cyclonic Seastate along Southeast Coast of India

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The east coast of the Indian Peninsula experiences the effects of a devastating cyclone at least annually. The Thane cyclone of 29–30 December 2011 has been once such event that resulted in significant damages along the coastline of Tamil Nadu on the southeast coast of India (13° 9′ 10′ N and 80° 21′E). Waves as high as 8–12 m in a water depth of 20 m have been measured. Such huge waves, combined with a storm surge of 0.5 m, lead to severe damages to coastal structures during the passage of the cyclone. As a part of an exercise in assessing the sediment transport rates through measurements of the hydrodynamic driving parameters along the coast of major port of Chennai instruments were deployed for the measurement of waves and flow field. The measurement campaign was carried out at a location of about 120 km north of the cyclone made landfall. The ENCEP wind data formed the input for executing the WAM model for the simulation of wave characteristics, which are compared with the measured wave data. The agreement between them is found to be good. The details of the analysis of the results are presented and discussed in this paper.
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Keywords: Extreme wave characteristics; field measurements; tropical cyclone; wind wave modelling

Document Type: Research Article

Affiliations: Department of Ocean Engineering, Indian Institute of Technology Madras, Chennai, India

Publication date: January 2, 2015

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