Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/7870
Authors: | Bizzarri, A. | Title: | Rupture speed and slip velocity: What can we learn from simulated earthquakes? | Journal: | Earth and planetary science letters | Series/Report no.: | /317-318(2012) | Publisher: | Elsevier Science Limited | Issue Date: | Feb-2012 | DOI: | 10.1016/j.epsl.2011.11.023 | URL: | http://www.bo.ingv.it/~bizzarri | Keywords: | Dynamic models Fault mechanics |
Subject Classification: | 04. Solid Earth::04.06. Seismology::04.06.03. Earthquake source and dynamics | Abstract: | In 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: | Article published / in press |
Files in This Item:
File | Description | Size | Format | Existing users please Login |
---|---|---|---|---|
Paper 31 2.pdf | 3.14 MB | Adobe PDF |
WEB OF SCIENCETM
Citations
5
25
checked on Feb 10, 2021
Page view(s)
58
checked on Mar 27, 2024
Download(s)
20
checked on Mar 27, 2024