Stress transfer relations among the earthquakes that occurred in Kerman province, southern Iran since 1981

Details Stress transfer relations among the earthquakes that occurred in Kerman province, southern Iran since 1981 Stress transfer relations among the earthquakes that occurred in Kerman province, southern Iran since 1981

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006geoji.167..309n&link_type=abstract

Geophysical Journal International, Volume 167, Issue 21, pp. 309-318.

Astronomy and Astrophysics

Astronomy

3

Kerman Province Earthquakes, Stress Distribution, Viscoelasticity

Scientific paper

We explore the possible stress triggering relationship of the M >= 6.4 earthquakes that occurred in Kerman Province, southern Iran since 1981. We calculated stress changes due to both coseismic sudden movement in the upper crust and the time-dependent viscous relaxation of the lower crust and/or upper mantle following the event. Four events of M >= 6.4 occurred between 1981 and 2005, on and close to the Gowk fault, show a clear Coulomb stress load to failure relationship. The 2003 M = 6.5 Bam earthquake, however, which occurred approximately 95 km SW of the closest Gowk event, shows a very weak stress relation to preceding earthquakes. The coseismic static stress change at the hypocentre of the Bam earthquake is quite small (~0.006 bars). The time-dependent post-seismic stress change could be 26 times larger or 7 times lower than that of coseismic static stress alone depending on the choice of viscoelastic crustal model and the effective coefficient of friction. Given the uncertainties in the viscoelastic earth models and the effective coefficient of friction, we cannot confidently conclude that the 2003 Bam event was brought closer to failure through coseismic or post-seismic stress loading. Interestingly, the southern Gowk segment with a similar strike to that of the Bam fault, experienced a stress load of up to 8.3 bars between 1981 and 2003, and is yet to have a damaging earthquake.

Affiliated with

Also associated with

No associations

Rating

Stress transfer relations among the earthquakes that occurred in Kerman province, southern Iran since 1981 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 Stress transfer relations among the earthquakes that occurred in Kerman province, southern Iran since 1981, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stress transfer relations among the earthquakes that occurred in Kerman province, southern Iran since 1981 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-905994