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Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/6157

Authors: Bizzarri, A.*
Title: On the recurrence of earthquakes: Role of wear in brittle faulting
Title of journal: Geophysical Research Letters
Series/Report no.: /37(2010)
Publisher: AGU
Issue Date: Oct-2010
DOI: 10.1029/2010GL045480
URL: http://www.bo.ingv.it/~bizzarri
Keywords: Earthquake recurrence
Dynamic models
Abstract: The time of occurrence of an earthquake is related to the state of the fault, tectonic loading, and possible triggering mechanisms, and it plays a prominent role in hazard assessment. In this paper we incorporate the effects of wear generation into a seismogenic model. We show that without wear the recurrence time of repeated earthquakes is constant through time and it is controlled by the initial conditions, tectonic loading and constitutive properties, including the presence of pore fluids. Our results indicate that considering the wear development into the fault model dramatically affects the temperature evolution of the fault, the stress release, the developed cosesimic slip and ultimately the duration of the seismic cycle. Moreover, we find that as long as the slipping zone thickness increases, the recurrence time continuously decreases through time. This further complicates the predictability of a subsequent earthquake, even in the simple case of an isolated fault.
Description: An edited version of this paper was published by AGU. Copyright (2010) American Geophysical Union.
Appears in Collections:04.06.11. Seismic risk
Papers Published / Papers in press

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