Fault-perpendicular aftershock clusters following the 2003 Mw = 5.0 Big Bear, California, earthquake

Details Fault-perpendicular aftershock clusters following the 2003 Mw = 5.0 Big Bear, California, earthquake Fault-perpendicular aftershock clusters following the 2003 Mw = 5.0 Big Bear, California, earthquake

Apr 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3307301c&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 7, CiteID L07301

Other

1

Seismology: Earthquake Dynamics (1242), Seismology: Earthquake Source Observations (1240), Seismology: Earthquake Interaction, Forecasting, And Prediction (1217, 1242), Seismology: Seismicity And Tectonics (1207, 1217, 1240, 1242), Structural Geology: Local Crustal Structure

Scientific paper

To explore aftershock-triggering mechanisms for the 2003 Big Bear, California earthquake sequence, we determined differential travel-times and applied the double-difference technique to relocate these events, which formed three clusters. The main cluster coincides with the 3 km long northwest striking sub-vertical mainshock fault. The other two sub-vertical clusters, located at opposite ends of the mainshock rupture, are almost perpendicular to the mainshock fault, contradicting the 60° separation angle of conjugate faults as predicted from frictional laws. Allowing for a 30° uncertainty in the cataloged strike, dip and rake values about 75% of the aftershocks are strike-slip as determined from first motion and complete waveform moment tensor inversions. We use a mainshock conceptual slip model to derive Coulomb Failure Stress regions, and assess correlations between stress increases and aftershock locations. We conclude that the perpendicular aftershock clusters were triggered by the mainshock static stress perturbation.

Affiliated with

Also associated with

No associations

Rating

Fault-perpendicular aftershock clusters following the 2003 Mw = 5.0 Big Bear, California, earthquake does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Fault-perpendicular aftershock clusters following the 2003 Mw = 5.0 Big Bear, California, earthquake, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fault-perpendicular aftershock clusters following the 2003 Mw = 5.0 Big Bear, California, earthquake will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1498296