Reconnaissance report on geotechnical effects and structural damage caused by the 3 January 2017 Tripura earthquake, India

P. Anbazhagan, Kunjari Mog (), K. S. Nanjunda Rao, N. Siddharth Prabhu, Ayush Agarwal, G. R. Reddy, Sima Ghosh, Malay Kr. Deb, Saurabh Baruah and Sarat Kr. Das
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P. Anbazhagan: Indian Institute of Science (IISc)
Kunjari Mog: Indian Institute of Science (IISc)
K. S. Nanjunda Rao: Indian Institute of Science (IISc)
N. Siddharth Prabhu: Indian Institute of Science (IISc)
Ayush Agarwal: Indian Institute of Science (IISc)
G. R. Reddy: Bhabha Atomic Research Centre
Sima Ghosh: National Institute of Technology, Agartala (NITA)
Malay Kr. Deb: Civil Engineering Consultancy Services Private Limited
Saurabh Baruah: CSIR North East Institute of Science and Technology
Sarat Kr. Das: Tripura Disaster Management Authority

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2019, vol. 98, issue 2, No 5, 425-450

Abstract: Abstract An earthquake of moment magnitude Mw 5.7 shook the northeastern region of India on 3 January 2017 at 14 h:39 min:0.5 s local time. The duration of the tremor lasted for about 5–6 s and had its epicenter in Dhalai District, Tripura, India. Even though the earthquake was of moderate magnitude, it caused damage to several masonry dwellings in Tripura and triggered soil liquefaction, lateral spreading, and landslides near the epicentral area. The sand boils containing appreciable amount of silts were ejected to the ground surface at the Kanchanbari and Kumarghat area due to the liquefaction-induced upward ground water flow. This is possibly the first liquefaction evidence in India induced due to a moderate earthquake magnitude of Mw 5.7. This paper reports the field reconnaissance observations of geotechnical effects and damage to buildings following a shallow, strike-slip earthquake in northeast India on 3 January 2017. In addition, the distribution of surface peak ground acceleration of the earthquake estimated from the empirical equations based on the available data is evaluated and discussed.

Keywords: Tripura earthquake; Geotechnical effects; Structural damage; Liquefaction; Peak ground acceleration (search for similar items in EconPapers)
Date: 2019
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DOI: 10.1007/s11069-019-03699-w

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