HR: 1340h
AN: S23A-0286    [Abstracts]
TI: A synthetic fault system in a spherical and viscoelastic Earth model
AU: * casarotti, e
EM: casarotti@ingv.it
AF: Istituto Nazionale di Geofisica e Vulcanologia, via vigna murata 605, Roma, 00143 Italy
AU: piersanti, a
EM: piersanti@ingv.it
AF: Istituto Nazionale di Geofisica e Vulcanologia, via vigna murata 605, Roma, 00143 Italy
AB: In order to improve our knowledge about fault interaction at long distances, we developed a synthetic fault system based on a spherical, viscoelastic, selfgravitating Earth model. Though seismicity in our simulation is controlled mainly by tectonic loading, our results highlight the significant role played by stress transfer in assessing the spatio-temporal pattern of the earthquakes also on global scale. In particular we observed that the postseismic stress diffusion could modify the seismicity rate of a local structure up to 70% and it affects structures thousands kilometers far away from the source.
DE: 7223 Seismic hazard assessment and prediction
DE: 7230 Seismicity and seismotectonics
DE: 8168 Stresses--general
SC: Seismology [S]
MN: 2004 AGU Fall Meeting