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JOURNAL OF GEOPHYSICAL RESEARCH, VOL. ???, XXXX, DOI:10.1029/, Earthquake nucleation on rate and state faults 1
 

Summary: JOURNAL OF GEOPHYSICAL RESEARCH, VOL. ???, XXXX, DOI:10.1029/,
Earthquake nucleation on rate and state faults 1
Aging and slip laws2
Jean-Paul Ampuero
Institute of Geophysics, ETH Zurich, Switzerland3
Allan M. Rubin
Department of Geosciences, Princeton University, Princeton, New Jersey,4
USA5
J.-P. Ampuero, Institute of Geophysics, Seismology and Geodynamics ETH Honggerberg
(HPP) CH-8093 Zurich Switzerland (email: ampuero@erdw.ethz.ch)
A. M. Rubin, Department of Geosciences, Princeton University, Princeton, NJ 08544, (email:
arubin@princeton.edu)
D R A F T August 21, 2007, 10:37am D R A F T
X - 2 AMPUERO AND RUBIN: RATE-AND-STATE EARTHQUAKE NUCLEATION
Abstract. We compare 2-D, quasi-static earthquake nucleation on rate-6
and-state faults under both "aging" and "slip" versions of the state evolu-7
tion law. For both versions mature nucleation zones exhibit 2 primary regimes8
of growth: Well above and slightly above steady state, corresponding respec-9
tively to larger and smaller fault weakening rates. Well above steady state,10
aging-law nucleation takes the form of accelerating slip on a patch of fixed11

  

Source: Ampuero, Jean Paul - Division of Geological and Planetary Sciences, California Institute of Technology

 

Collections: Geosciences