naa a22 4500 510756042 CHVBK 20180411083123.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s12594-013-0121-8 doi (NATIONALLICENCE)springer-10.1007/s12594-013-0121-8 Chronology of major terrace forming events in the Andaman islands during the last 40 kyr [Elektronische Daten] [Neeraj Awasthi, Jyotiranjan Ray, Amzad Laskar, Madhusudan Yadava] Major earthquakes that trigger tsunamis are great natural hazards. The devastations caused by the December 26, 2004 Sumatran earthquake, and the March 11, 2011 Japan earthquake, and associated tsunamis will remain in our memories for a long time. Such events reaffirm the need for studying the cause and effects of large earthquakes of the past and to prepare the world better for the future. In such an effort, to understand the pattern of earthquakes and their effects on the geomorphic evolution, we have studied deformation history in the Andaman and Nicobar Islands, located in one of the most active convergent margins of the world. Focusing on tectonically formed coastal terraces and determining the timing of their formation from the exposed dead corals, we have been able to reconstruct the history of major earthquakes in these islands for the last 40 kyr. Our results in conjunction with the existing radiocarbon age data from coastal terraces of these islands appear to suggest that the frequency of major earthquakes (M > 7) in the region has increased during the last 9 kyr. In confirmation with some earlier work, we find evidences for a major earthquake and a tsunami between 500-600 cal yr BP and possibly 4 others during 6-9 cal kyr BP. Our results also indicate that there has been a continuous subsidence of the south Andaman Islands. Geological Society of India, 2013 Coastal terraces nationallicence Earthquake nationallicence Tsunami nationallicence 14C dating nationallicence Andaman Islands nationallicence Awasthi Neeraj Geoscience Division, Physical Research Laboratory, 380 009, Navrangpura, Ahmedabad, India aut Ray Jyotiranjan Geoscience Division, Physical Research Laboratory, 380 009, Navrangpura, Ahmedabad, India aut Laskar Amzad Geoscience Division, Physical Research Laboratory, 380 009, Navrangpura, Ahmedabad, India aut Yadava Madhusudan Geoscience Division, Physical Research Laboratory, 380 009, Navrangpura, Ahmedabad, India aut Journal of the Geological Society of India Springer India 82/1(2013-07-01), 59-66 0016-7622 82:1<59 2013 82 12594 https://doi.org/10.1007/s12594-013-0121-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12594-013-0121-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Awasthi Neeraj Geoscience Division, Physical Research Laboratory, 380 009, Navrangpura, Ahmedabad, India aut NATIONALLICENCE 700 1- Ray Jyotiranjan Geoscience Division, Physical Research Laboratory, 380 009, Navrangpura, Ahmedabad, India aut NATIONALLICENCE 700 1- Laskar Amzad Geoscience Division, Physical Research Laboratory, 380 009, Navrangpura, Ahmedabad, India aut NATIONALLICENCE 700 1- Yadava Madhusudan Geoscience Division, Physical Research Laboratory, 380 009, Navrangpura, Ahmedabad, India aut NATIONALLICENCE 773 0- Journal of the Geological Society of India Springer India 82/1(2013-07-01), 59-66 0016-7622 82:1<59 2013 82 12594 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer