Seismic hazard analysis of Lucknow considering local and active seismic gaps

Kumar, Abhishek and Anbazhagan, P and Sitharam, TG (2013) Seismic hazard analysis of Lucknow considering local and active seismic gaps. In: NATURAL HAZARDS, 69 (1). pp. 327-350.

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Abstract

The Himalayas are one of very active seismic regions in the world where devastating earthquakes of 1803 Bihar-Nepal, 1897 Shillong, 1905 Kangra, 1934 Bihar-Nepal, 1950 Assam and 2011 Sikkim were reported. Several researchers highlighted central seismic gap based on the stress accumulation in central part of Himalaya and the non-occurrence of earthquake between 1905 Kangra and 1934 Bihar-Nepal. The region has potential of producing great seismic event in the near future. As a result of this seismic gap, all regions which fall adjacent to the active Himalayan region are under high possible seismic hazard due to future earthquakes in the Himalayan region. In this study, the study area of the Lucknow urban centre which lies within 350 km from the central seismic gap has been considered for detailed assessment of seismic hazard. The city of Lucknow also lies close to Lucknow-Faizabad fault having a seismic gap of 350 years. Considering the possible seismic gap in the Himalayan region and also the seismic gap in Lucknow-Faizabad fault, the seismic hazard of Lucknow has been studied based on deterministic and the probabilistic seismic hazard analysis. Results obtained show that the northern and western parts of Lucknow are found to have a peak ground acceleration of 0.11-0.13 g, which is 1.6- to 2.0-fold higher than the seismic hazard compared to the other parts of Lucknow.

Item Type:	Journal Article
Publication:	NATURAL HAZARDS
Publisher:	SPRINGER
Additional Information:	copyright for this article belongs to Springer
Keywords:	Himalayan belt; Central seismic gap; Indo-Gangetic basin; PGA
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	13 Nov 2013 10:54
Last Modified:	13 Nov 2013 10:54
URI:	http://eprints.iisc.ac.in/id/eprint/47751

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