TY  - JOUR
ID  - epos1487
UR  - http://dx.doi.org/10.1785/0120000298
IS  - 6
A1  - Chery, Jean
A1  - Merkel, Sebastien
A1  - Bouissou, Stephane
Y1  - 2001/12/01/
N2  - We develop a theory that links stress interaction between earthquakes
and the occurrence of temporal clustering. Coseismic static stress change in the vicinity (50 km) of large earthquakes suggests that perturbations of 0.1 to 1 bars may
affect the occurrence of other earthquakes. At larger distances, interactions also seem
to exist: four M 8 earthquakes have occurred in Mongolia on distant faults (400 km)
during the last century. Also, paleoseismic observations documenting much longer
time periods display a time clustering of major events. We demonstrate with simple
mechanical concepts that postseismic stress relaxation magni?es the coseismic stress
change and has a major effect on fault interaction during the seismic cycle. In the
simple case where two distant faults are coupled, the probabilistic occurrence of
triggered earthquakes may increase dramatically due to long range postseismic
coupling.
PB  - Seismological Society of America
JF  - Bulletin of the Seismological Society of America
VL  - 91
SN  - 0037-1106
TI  - A Physical Basis for Time Clustering of Large Earthquakes
SP  - 1685
AV  - none
EP  - 1693
ER  -