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Khan, P. K.
- Source Parameters and Focal Mechanisms of Local Earthquakes: Single Broadband Observatory at ISM Dhanbad
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Authors
Affiliations
1 Department of Applied Geophysics, Indian School of Mines, Dhanbad - 826 004, IN
2 Department Geology and Geophysics, IIT Kharagpur, Kharagpur - 721 302, IN
1 Department of Applied Geophysics, Indian School of Mines, Dhanbad - 826 004, IN
2 Department Geology and Geophysics, IIT Kharagpur, Kharagpur - 721 302, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 74, No 3 (2009), Pagination: 413-419Abstract
A three-component broadband seismograph is in operation since January 2007 at the Indian School of Mines (ISM) campus. We have used the broadband seismograms of two local earthquakes M <3 recorded by this single station to illustrate its efficacy in understanding the source processes and tectonics in Dhanbad area. Source parameters and fault plane solutions are obtained through waveform inversion. It is observed that these two earthquakes occurred in the lower crust at a depth of 26 km by strike slip faulting. North-south compressional and east-west tensional stresses are dominant in the area, and the lower crust is the source area for the local earthquakes.Keywords
Earthquake, Broadband, Seismograph, Dhanbad.
References
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- Evaluation of Crustal and Upper Mantle Structures Using Receiver Function Analysis: ISM Broadband Observatory Data
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Authors
Affiliations
1 Department of Applied Geophysics, Indian School of Mines, Dhanbad - 826 004, IN
2 National Geophysical Research Institute (Council of Scientific and Industrial Research), Hyderabad - 500 007, IN
1 Department of Applied Geophysics, Indian School of Mines, Dhanbad - 826 004, IN
2 National Geophysical Research Institute (Council of Scientific and Industrial Research), Hyderabad - 500 007, IN