TY  - JOUR
ID  - epos1464
UR  - http://dx.doi.org/10.1029/2003GL017110
IS  - 11
A1  - Narteau, C.
A1  - Shebalin, P.
A1  - Hainzl, Sebastian
A1  - Zoller, G.
A1  - Holschneider, M.
Y1  - 2003/06/06/
N2  - In order to elucidate how structural heterogeneities
affect the aftershock decay rate, we examine the aftershock
sequences produced by a slider-block model of seismicity. In
this model, the geometry of the seismic zone is the only free
parameter and all aspects of the system are known. The
power law aftershock decay rate holds only for smooth faults.
A band-limited power law emerges at intermediate fault
complexity. For rough faults, only a transient regime toward
an exponential decay is observed. In all fault geometries
examined, a band-limited power law model fits the synthetic
aftershock decay rate better than the Modified Omori Law.
Then, as the connected seismic elements form a simpler
localised surface, we show that the power law aftershock
decay rate extends over longer time, and that the power law
exponent increases. These results support the inference that
the correlation time of the power law aftershock decay rate
increases as the deformation localises along dominant major
faults.
PB  - American Geophysical Union
JF  - Geophysical Research Letters
VL  - 30
SN  - 0094-8276
TI  - Emergence of a band-limited power law in the aftershock decay rate of a slider-block model
AV  - none
ER  -