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Abstract
The tsunami generated by the December 2004 Sumatra-Andaman earthquake had a devastating effect on some parts of Kerala coast, which is a coast located in southwest India. Results of post-tsunami field surveys carried out to understand the changes in coastal morphology and sediment characteristics in the worst affected Kayamkulam region of Kerala coast are documented in this study. Analysis of offshore bathymetric data indicates the shifting of depth contours towards shore, indicating erosion of sediments and deepening of innershelf due to the tsunami. Depth measurement along the backwater (T-S canal) in the hinterland region indicates siltation due to the inundation of the canal.
Acknowledgments
We thank M/s K. Rajith, B.T. Muralikrishnan, Abhilash P. Pillai, P. Kalaiarasan and Tiju Varghese, M.S. Saran, K.O. Badarees and K.P. Indulekha for contributions during the field surveys, processing of data, and preparation of manuscript. The Inland Waterways Authority of India provided the sounding chart (pretsunami) of T-S canal.