2018
DOI: 10.1029/2018gl080137
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Surface Creep Rate of the Southern San Andreas Fault Modulated by Stress Perturbations From Nearby Large Events

Abstract: A major challenge for understanding the physics of shallow fault creep has been to observe and model the long-term effect of stress changes on creep rate. Here we investigate the surface creep along the southern San Andreas fault (SSAF) using data from interferometric synthetic aperture radar spanning over 25 years (ERS 1992-1999, ENVISAT 2003, and Sentinel-1 2014. The main result of this analysis is that the average surface creep rate increased after the Landers event and then decreased by a factor of 2-7 ove… Show more

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Cited by 19 publications
(24 citation statements)
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“…Static stress changes due to permanent fault displacements can trigger seismic or aseismic fault slip on nearby faults (Harris, ; King et al, ; Xu et al, ). To estimate a possible contribution of permanent change in static stress to the SSE, we model the Coulomb stress changes induced by the M w 6.2 Nantou mainshock on the receiver fault plane candidates of the SSE using Coulomb 3.4 (Lin & Stein, ; Toda et al, ).…”
Section: Stress Perturbations From the 02 June 2013 Mw 62 Nantou Earmentioning
confidence: 99%
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“…Static stress changes due to permanent fault displacements can trigger seismic or aseismic fault slip on nearby faults (Harris, ; King et al, ; Xu et al, ). To estimate a possible contribution of permanent change in static stress to the SSE, we model the Coulomb stress changes induced by the M w 6.2 Nantou mainshock on the receiver fault plane candidates of the SSE using Coulomb 3.4 (Lin & Stein, ; Toda et al, ).…”
Section: Stress Perturbations From the 02 June 2013 Mw 62 Nantou Earmentioning
confidence: 99%
“…Stress perturbations from a mainshock rupture can trigger spontaneous or delayed SSEs (over hours to months; e.g., Hayes et al, 2014;Hirose et al, 2012;Rolandone et al, 2018), which release stress that had built up during the previous inter-SSE interval (Bürgmann, 2018), and can also trigger transient creep (Lienkaemper et al, 1997;Wei et al, 2015) or modulate surface creep rate (Xu et al, 2018). In general, dynamic triggering of SSEs remains a rare phenomenon, and only a few cases are documented (Araki et al, 2017;Itaba & Ando, 2011;Wallace et al, 2017;Zigone et al, 2012).…”
Section: Introductionmentioning
confidence: 99%
“…We depict a simplified boundary of the zone of hydrologic deformation in Figure 8 , based on Xu et al. ( 2018 ) and Lindsey et al. ( 2014 ).…”
Section: Discussionmentioning
confidence: 99%
“…The “Approximate margin of leakage” refers to the position of the edge of displacement that we identified using 5 interferograms of Xu et al. ( 2018 ) below the Coachella canal and the vertical data set of Lindsey et al. ( 2014 ).…”
Section: Surface Fracture Characterization By Image Analysismentioning
confidence: 99%
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