Short-Term Morphological and Shoreline Changes at Trinkat Island, Andaman and Nicobar, India, After the 2004 Tsunami
The tsunami waves generated during the Sumatra-Andaman earthquake of 26 December 2004 devastated the coastal area along Trinkat Island, causing sudden changes to the morphology of the landforms. This study uses a series of satellite images to record the short-term morphological response
and shoreline changes as well as the recovery of coastal land after its destruction. Results indicate that the island experienced substantial erosion and a significant reduction in land area. Shoreline erosion is more prevalent than accretion at an average linear regression rate of ∼−9 m
per year between 2004 and 2013. The major morphological changes at Trinkat Island were observed in coastal inlets, beaches, and bay head-lands. Straight beaches had almost recovered eight years after the tsunami; however, erosion is continually observed in other areas. Our study will help
understanding the response and recovery of shorelines in Indian Ocean regions after the 2004 tsunami.
Keywords: 2004 tsunami; Andaman and Nicobar; December 26; Trinkat Island; beach recovery; coastal landforms; shoreline erosion
Document Type: Research Article
Affiliations: 1: Department of Natural Environmental Studies, Graduate School of Frontier Science, The University of Tokyo, Kashiwa, Japan 2: Centre for Earth & Space Sciences, University of Hyderabad, Hyderabad, India
Publication date: 02 January 2015
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