By C P Rajendran
The author is Professor at Geodynamics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru. email@example.com
More than a decade after the 2004 Andaman-Sumatra earthquake/tsunami, offshore and deep ocean observation systems now contribute to early tsunami warning efforts in India. The lessons we learnt from this catastrophe taught us to develop better strategies for disaster-preparedness.
The disastrous earthquake-triggered tsunami that occurred 11 years ago on the morning after Christmas was huge by any contemporary standards. The epicenter of magnitude 9.3 quake was located in the Indian Ocean near the west coast of Sumatra and it ruptured the 1000 km long Andaman plate boundary, moving the seafloor 20-10 m vertically upwards, thus displacing trillions of tons of under-sea rock. The killer waves radiating from the epicenter slammed into the coastlines of 11 countries from east Africa...