Static stress change from the 8 October, 2005 M = 7.6 Kashmir earthquake

Details Static stress change from the 8 October, 2005 M = 7.6 Kashmir earthquake Static stress change from the 8 October, 2005 M = 7.6 Kashmir earthquake

Mar 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3306304p&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 6, CiteID L06304

Physics

13

Seismology: Earthquake Source Observations (1240), Seismology: Earthquake Interaction, Forecasting, And Prediction (1217, 1242), Seismology: Seismicity And Tectonics (1207, 1217, 1240, 1242), Tectonophysics: Stresses: Crust And Lithosphere

Scientific paper

We calculated static stress changes from the devastating M = 7.6 earthquake that shook Kashmir on 8 October, 2005. We mapped Coulomb stress change on target fault planes oriented by assuming a regional compressional stress regime with greatest principal stress directed orthogonally to the mainshock strike. We tested calculation sensitivity by varying assumed stress orientations, target-fault friction, and depth. Our results showed no impact on the active Salt Range thrust southwest of the rupture. Active faults north of the Main Boundary thrust near Peshawar fall in a calculated stress-decreased zone, as does the Raikot fault zone to the northeast. We calculated increased stress near the rupture where most aftershocks occurred. The greatest increase to seismic hazard is in the Indus-Kohistan seismic zone near the Indus River northwest of the rupture termination, and southeast of the rupture termination near the Kashmir basin.

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