Spatiotemporal evolution of slow slip events in a nonplanar fault model for northern Cascadia subduction zone

2016 ◽  
Vol 121 (9) ◽  
pp. 6828-6845 ◽  
Author(s):  
Duo Li ◽  
Yajing Liu
Keyword(s):  
Subduction Zone ◽  
Fault Model ◽  
Cascadia Subduction Zone ◽  
Slow Slip ◽  
Spatiotemporal Evolution ◽  
Slow Slip Events

scholarly journals GPS constraints on 34 slow slip events within the Cascadia subduction zone, 1997–2005

2008 ◽  
Vol 113 (B4) ◽  
Author(s):  
W. Szeliga ◽  
T. Melbourne ◽  
M. Santillan ◽  
M. Miller
Keyword(s):  
Subduction Zone ◽  
Cascadia Subduction Zone ◽  
Slow Slip ◽  
Slow Slip Events

Optimizing Sensor Configurations for the Detection of Slow‐Slip Earthquakes in Seafloor Pressure Records, Using the Cascadia Subduction Zone as a Case Study

2019 ◽  
Vol 124 (12) ◽  
pp. 13504-13531 ◽  
Author(s):  
Erik K. Fredrickson ◽  
William S. D. Wilcock ◽  
David A. Schmidt ◽  
Parker MacCready ◽  
Emily Roland ◽  
...  
Keyword(s):  
Subduction Zone ◽  
Cascadia Subduction Zone ◽  
Slow Slip ◽  
Seafloor Pressure

Systematic characterization of slow slip events along the Mexican subduction zone from 2000 to 2019

2020 ◽  
Author(s):  
Mathilde Radiguet ◽  
Ekaterina Kazachkina ◽  
Louise Maubant ◽  
Nathalie Cotte ◽  
Vladimir Kostoglodov ◽  
...  
Keyword(s):  
Subduction Zone ◽  
Subduction Zones ◽  
Scaling Laws ◽  
Temporal Evolution ◽  
Seismic Gap ◽  
Slow Slip ◽  
Slow Slip Events ◽  
Grace Data ◽  
Spatio Temporal ◽  
Mexican Subduction Zone

<p>Slow slip events (SSEs) represent a significant mechanism of strain release along several subduction zones, and understanding their occurrence and relations with major earthquake asperities is essential for a comprehensive understanding of the seismic cycle. Here, we focus on the Mexican subduction zone, characterized by the occurrence of recurrent large slow slip events (SSEs), both in the Guerrero region, where the SSEs are among the largest observed worldwide, and in the Oaxaca region, where smaller, more frequent SSEs occur. Up to now, most slow slip studies in the Mexican subduction zone focused either on the detailed analysis of a single event, were limited to a small area (Guerrero or Oaxaca), or were limited to data before 2012 [e.g.1-4]. In this study, our aim is to build an updated and consistent catalog of major slow slip events in the Guerrero-Oaxaca region.</p><p>We use an approach similar to Michel et al. 2018 [5]. We analyze the GPS time series from 2000 to 2019 using Independent Component Analysis (ICA), in order to separate temporally varying sources of different origins (seasonal signals, SSEs and afterslip of major earthquakes). We are able to isolate a component corresponding to seasonal loading, which matches the temporal evolution of displacement modeled from the GRACE data. The sources (independent components) identified as tectonic sources of deep origin are inverted for slip on the subduction interface. We thus obtain a model of the spatio-temporal evolution of aseismic slip on the subduction interface over 19 years, from which we can isolate around 30 individual slow slip events of M<sub>w </sub>> 6.2.</p><p> The obtained catalog is coherent with previous studies (in terms of number of events detected, magnitude and duration) which validates the methodology. The observed moment-duration scaling is close to M<sub>0</sub>~T<sup>3 </sup>as recently suggested by Michel [6] for Cascadia SSEs, and our study extends the range of magnitude considered in their analysis. Finally, we also investigate the spatio-temporal relations between the SSEs occurring in the adjacent regions of Guerrero and Oaxaca, and their interaction with local and distant earthquakes.</p><p> </p><p>References:</p><ol><li>Kostoglodov, V. et al. A large silent earthquake in the Guerrero seismic gap, Mexico. Geophys. Res. Lett <strong>30</strong>, 1807 (2003).</li> <li>Graham, S. et al. Slow Slip History for the Mexico Subduction Zone: 2005 Through 2011. Pure and Applied Geophysics 1–21 (2015). doi:10.1007/s00024-015-1211-x</li> <li>Larson, K. M., Kostoglodov, V. & Shin’ichi Miyazaki, J. A. S. The 2006 aseismic slow slip event in Guerrero, Mexico: New results from GPS. Geophys. Res. Lett. <strong>34</strong>, L13309 (2007).</li> <li>Radiguet, M. et al. Slow slip events and strain accumulation in the Guerrero gap, Mexico. J. Geophys. Res. <strong>117</strong>, B04305 (2012).</li> <li>Michel, S., Gualandi, A. & Avouac, J.-P. Interseismic Coupling and Slow Slip Events on the Cascadia Megathrust. Pure Appl. Geophys. (2018). doi:10.1007/s00024-018-1991-x</li> <li>Michel, S., Gualandi, A. & Avouac, J. Similar scaling laws for earthquakes and Cascadia slow-slip events. Nature <strong>574, </strong>522–526 (2019) doi:10.1038/s41586-019-1673-6</li> </ol><p> </p>

Three‐Dimensional Modeling of Spontaneous and Triggered Slow‐Slip Events at the Hikurangi Subduction Zone, New Zealand

2019 ◽  
Vol 124 (12) ◽  
pp. 13250-13268 ◽  
Author(s):  
Bunichiro Shibazaki ◽  
Laura M. Wallace ◽  
Yoshihiro Kaneko ◽  
Ian Hamling ◽  
Yoshihiro Ito ◽  
...  
Keyword(s):  
New Zealand ◽  
Subduction Zone ◽  
Three Dimensional ◽  
Slow Slip ◽  
Slow Slip Events ◽  
Three Dimensional Modeling ◽  
Dimensional Modeling
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