Physics
Scientific paper
Apr 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3208310s&link_type=abstract
Geophysical Research Letters, Volume 32, Issue 8, CiteID L08310
Physics
1
Seismology: Continental Crust (1219), Seismology: Earthquake Dynamics (1242), Seismology: Seismicity And Tectonics (1207, 1217, 1240, 1242)
Scientific paper
The Koyna-Warna region located in the southwestern part of Deccan Volcanic Province is known for sustained seismicity during the last four decades. Catalog P and S phase data of local earthquakes recorded by the Koyna-Warna digital network were used to relocate 609 earthquakes using double difference algorithm. The relocated seismicity patterns delineate the presence of three fault segments and variation in the brittle-ductile transition depths amongst the individual faults as the earthquake foci in the north are limited up to 11 km depth whilst in the south they are confined up to 6-8 km. The focal mechanism solutions also indicate distinct styles of faulting amongst the three inferred fault segments. The variation in brittle-ductile transition zone is probably controlled due to the geometry of the fault system and the effective stress.
Rajagopala Sarma P.
Srinagesh D.
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