Aftershocks resulting from creeping sections in a heterogeneous fault
- We show that realistic aftershock sequences with space-time characteristics compatible with observations are generated by a model consisting of brittle fault segments separated by creeping zones. The dynamics of the brittle regions is governed by static/kinetic friction, 3D elastic stress transfer and small creep deformation. The creeping parts are characterized by high ongoing creep velocities. These regions store stress during earthquake failures and then release it in the interseismic periods. The resulting postseismic deformation leads to aftershock sequences following the modified Omori law. The ratio of creep coefficients in the brittle and creeping sections determines the duration of the postseismic transients and the exponent p of the modified Omori law
Verfasserangaben: | Gert ZollerORCiDGND, Sebastian HainzlORCiDGND, Matthias HolschneiderORCiDGND, Yehuda Ben-ZionORCiD |
---|---|
ISSN: | 0094-8276 |
Publikationstyp: | Wissenschaftlicher Artikel |
Sprache: | Englisch |
Jahr der Erstveröffentlichung: | 2005 |
Erscheinungsjahr: | 2005 |
Datum der Freischaltung: | 24.03.2017 |
Quelle: | Geophysical Research Letters. - ISSN 0094-8276. - 32 (2005), 3, S. 4 |
Organisationseinheiten: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
Peer Review: | Referiert |
Name der Einrichtung zum Zeitpunkt der Publikation: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik |