Coastal Erosion and Protection – Post Tsunami Scenario in Andaman and Nicobar Islands
The intensity of the impact of Tsunami was varied along the coast. The impact mainly depended on the interaction of the Tsunami with the coastline, which in turn depended on many parameters like bathymetry, surge height, ground slope, configuration of the coastline, structures at the coast etc. In the presence of coastal structures like seawall or breakwater the behaviour of Tsunami surge at the shoreline was totally different. The seawall or breakwater obstructed the Tsunami surge and took the major impact. As such, these structures provided protection to the land to some extent. The post-tsunami scenario of the coastal erosion and protection, behaviour of coastline and performance of the existing seawalls or breakwaters during the recent Tsunami have been described in this paper.
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