Please use this identifier to cite or link to this item:
AuthorsBizzarri, A. 
TitleRupture speed and slip velocity: What can we learn from simulated earthquakes?
Issue DateFeb-2012
Series/Report no./317-318(2012)
KeywordsDynamic models
Fault mechanics
Subject Classification04. Solid Earth::04.06. Seismology::04.06.03. Earthquake source and dynamics 
AbstractIn this paper we consider a wide catalog of synthetic earthquakes, numerically modeled as spontaneous, fully dynamic, 3-D ruptures on extended faults, governed by different friction laws, including slip-dependent and rate- and state-dependent equations.We analyze the spatial correlations between the peak of fault slip velocity (v_peak) and the rupture speed (v_r) at which the earthquake spreads over the fault. We found that vpeak positively correlates with vr and that the increase of v_peak is roughly quadratic. We found that near the transition between sub- and supershear regimes vpeak significantly diminishes and then starts to increase againwith the square of v_r. This holds for all the governing models we consider and for both homogeneous and heterogeneous configurations. Moreover, we found that, on average, v_peak increases with the magnitude of the event (v_peak~M_0^0.18). Our results can be incorporated as constraints in the inverse modeling of faults.
Appears in Collections:Papers Published / Papers in press

Files in This Item:
File Description SizeFormat 
Paper 31 2.pdf3.14 MBAdobe PDFView/Open
Show full item record

Page view(s)

Last Week
Last month
checked on Jul 22, 2017


checked on Jul 22, 2017

Google ScholarTM