Epidemic type aftershock sequence (ETAS) modeling of northeastern Himalayan seismicity |
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| Authors: | A R Bansal V P Dimri K K Babu |
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| Institution: | 1. CSIR—National Geophysical Research Institute, Uppal Road, Hyderabad, 500 007, India
2. National Institute of Rock Mechanics, Champion Reefs P. O., Kolar Gold Fields, 563 117, Karnataka, India
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| Abstract: | We analyzed the seismicity of northeastern Himalayan region of latitude (25 to 32°?N) and longitude (86–97°?E). The US Geological Survey catalogue is used in this study for a period from 1973 to June 2011. The seismicity of the region is modeled using epidemic type aftershock sequence (ETAS) model. The region is divided in three parts: (1) whole region, (2) subregion I, and (3) subregion II. The magnitude of completeness is found to be 4.6 for all the three regions. The ETAS parameters for all the regions are found same within the standard errors. There is no significant change observed in the seismicity since 1973 based on the ETAS modeling. |
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