A unified earthquake catalogue for South Asia covering the period 1900–2014
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- 作者：Sankar Kumar Nath ; Suman Mandal ; Manik Das Adhikari ; Soumya Kanti Maiti
- 关键词：Seismicity ; OSR ; Declustering ; Foreshock ; Main ; shock ; Aftershock
- 刊名：Natural Hazards
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：85
- 期：3
- 页码：1787-1810
- 全文大小：
- 刊物类别：Earth and Environmental Science
- 刊物主题：Natural Hazards; Hydrogeology; Geophysics/Geodesy; Geotechnical Engineering & Applied Earth Sciences; Civil Engineering; Environmental Management;
- 出版者：Springer Netherlands
- ISSN：1573-0840
- 卷排序：85
文摘
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 MW,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.