Global variations of stress drop for moderate to large earthquakes

By B. Allmann, P. Shearer. 2009

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View Paper: https://www.semanticscholar.org/paper/64265ce026010bcfa07fd29011ce50914a437f83

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In Geophysics

Citations in the corpus

Variability in earthquake stress drop and apparent stress (2011, background): “[3] Large earthquake populations reveal strong variations in stress drop, but little in the way of systematic behavior or dependence on seismic moment [e.g., Aki, 1972;Hanks, 1977; Allmann and Shearer, 2009].”
Earthquake Surface Slip-Length Data is Fit by Constant Stress Drop and is Useful for Seismic Hazard Analysis (2013, result): “Interestingly, the mean value for the stress drop inferred from the large event surface-slip data is remarkably consistent with mean values inferred seismologically from small events (Hanks, 1977; Allmann and Shearer, 2009) and from aftershock distributions (Rubin, 2002).”
Rupture characteristics of major and great (Mw ≥ 7.0) megathrust earthquakes from 1990 to 2015: 1. Source parameter scaling relationships (2016, background): “…average source amplitude spectra with parameterized point source representations [e.g., Abercrombie, 1995; Choy et al., 2006; Shearer et al., 2006; Allmann and Shearer, 2009] that involve a corner frequency (fc) and high-frequency (ω) spectral decay rate (often assumed to be ω 2) [e.g., Brune,…”
Seismic source spectra and estimated stress drop derived from cohesive-zone models of circular subshear rupture (2014, background): “The viscosity η depends on the size of the elements on the fault and must be a small fraction of the critical time step in an elastic medium for the average linear size of the elements on the fault plane (e.g. Ampuero 2002; Kaneko et al. 2008).”
Hybrid Broadband Ground-Motion Simulations: Combining Long-Period Deterministic Synthetics with High-Frequency Multiple S-to-S Backscattering (2010, positive): “Following Allmann and Shearer (2009), the stress dropΔσ for a circular rupture with rupture speed vr 0:9β (assuming shear-wave speed β 3:9 km=s) is given as Δσ M0 fc0:42β 3, from which we obtain fc 0:10 Hz for the fault-averaged stress drop Δσ 4 MPa and the lower moment estimate, and fc 0:22 Hz…”