Short-Term Morphological and Shoreline Changes at Trinkat Island,Andaman and Nicobar,India, After the 2004 Tsunami |
| |
| Authors: | P Yunus Ali |
| |
| Institution: | Department of Natural Environmental Studies, Graduate School of Frontier Science, The University of Tokyo, Kashiwa, Japan |
| |
| Abstract: | 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: | December 26 2004 tsunami coastal landforms shoreline erosion beach recovery Andaman and Nicobar Trinkat Island |
|
|
