A unified earthquake catalogue for South Asia covering the period 1900–2014

Sankar Kumar Nath (), Suman Mandal (), Manik Adhikari () and Soumya Kanti Maiti ()
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Sankar Kumar Nath: Indian Institute of Technology Kharagpur
Suman Mandal: Indian Institute of Technology Kharagpur
Manik Adhikari: Indian Institute of Technology Kharagpur
Soumya Kanti Maiti: Indian Institute of Technology Kharagpur

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2017, vol. 85, issue 3, No 23, 1787-1810

Abstract: Abstract Seismicity analysis is very much pertinent for Indian subcontinent and its adjoining region which is seismically active including many great earthquakes associated with collision and subduction tectonics in the northern, north-eastern part of the subcontinent and in the Andaman and Nicobar Island. An earthquake catalogue has been generated for South Asia covering the period 1900–2014 by compiling the records of earthquake occurrences from International Seismological Center, Global Centroid Moment Tensor (GCMT), US Geological Survey, India Meteorological Department and published literature. The uniform magnitude scaling in moment magnitude M W,GCMT is achieved through connecting relationships between different magnitude types. These relationships are derived by orthogonal standard regression analysis on available data pairs. The derived relationships have been compared with the existing equations already reported by others. The catalogue is subsequently subjected to a seismicity declustering algorithm to identify the foreshocks, main-shocks and aftershocks. The catalogue thus compiled is envisaged to be a useful resource for seismotectonic and seismic hazard studies in the region.

Keywords: Seismicity; OSR; Declustering; Foreshock; Main-shock; Aftershock (search for similar items in EconPapers)
Date: 2017
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DOI: 10.1007/s11069-016-2665-6

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