Vulnerability Assessment at Village Level Due to Tides, Surges and Wave Setup

Abstract

An assessment of cyclone risk and vulnerability at the village level has evolved, which is an important component of the information system for local level development action plans for preparedness and mitigation. Here, a case study for the Nellore district along the east coast of India is considered. Using maximum probable surges along the coast, total water level (TWL) due to the combined effect of surge, tide, and wind wave is computed for the most vulnerable coastal villages of the Nellore district due to any tropical cyclones. The computations suggest that the TWL along the Nellore coast varies from 2 m in the south to 4 m in the north.

Keywords:

• Numerical model
• storm surges
• tropical cyclones
• Bay of Bengal
• total water level

Acknowledgements

The authors acknowledge the Department of Science and Technology, Government of India, for granting the financial support to carry out this work. The authors also wish to thank IMD, SMRC, NGDC, NIO, and Unisys Corporation for providing the data used here.