Teleseismic Source Parameters of the Rigan County Earthquakes and Evidence for a New Earthquake Fault

Two medium-sized earthquakes occurred on 20 December 2010 and 27 January 2011 in Rigan County, Kerman Province, southeastern Iran. According to the dislocation grid search method results, the first event was nearly strike-slip including reverse component (strike 115°, dip 50°, and rake −5°) whereas...

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Published in:Pure and applied geophysics 2012-09, Vol.169 (9), p.1655-1661
Main Author: Ashtari Jafari, Mohammad
Format: Article
Language:English
Subjects:
Casualties
Dipping
Earth and Environmental Science
Earth Sciences
Earth, ocean, space
Earthquakes
Earthquakes, seismology
Exact sciences and technology
Fault lines
Faults
Geophysics
Geophysics/Geodesy
Internal geophysics
Population distribution
Propagation
Rakes
Seismic activity
Seismic phenomena
Seismology
Strikes
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description Two medium-sized earthquakes occurred on 20 December 2010 and 27 January 2011 in Rigan County, Kerman Province, southeastern Iran. According to the dislocation grid search method results, the first event was nearly strike-slip including reverse component (strike 115°, dip 50°, and rake −5°) whereas the second event had some amount of reverse component (strike 125°, dip 75°, and rake −5°). Based on synthetic Green’s function deconvolution and aftershock distribution, the down-dip-propagated rupture migrated toward southeast districts with low population distribution, confirming the reason for low casualties. Meanwhile, the aftershock distribution indicates the existence of a new earthquake fault for which we suggest the name “Rigan earthquake fault.” However, the same aftershock distribution indicates that the second mainshock was inevitably triggered by the first one, most probably along the continuation of the Bam earthquake fault.
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source Springer Nature
subjects Casualties
Dipping
Earth and Environmental Science
Earth Sciences
Earth, ocean, space
Earthquakes
Earthquakes, seismology
Exact sciences and technology
Fault lines
Faults
Geophysics
Geophysics/Geodesy
Internal geophysics
Population distribution
Propagation
Rakes
Seismic activity
Seismic phenomena
Seismology
Strikes
title Teleseismic Source Parameters of the Rigan County Earthquakes and Evidence for a New Earthquake Fault
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