Transient Deformation and Stress Patterns Induced by the 2010 Maule Earthquake in the Illapel Segment
نویسندگان
چکیده
Evaluating the transfer of stresses from megathrust earthquakes to adjacent segments is fundamental assess seismic hazard. Here, we use a 3D forward model as well GPS and data investigate transient deformation Coulomb Failure Stresses (CFS) changes induced by 2010 Maule earthquake in its northern segment, where Mw 8.3 Illapel occurred 2015. The incorporates coseismically instantaneous, elastic response, time-dependent afterslip viscoelastic relaxation processes postseismic period. We particularly examine impact linear power-law rheology on resulting CFS that may have triggered earthquake. At hypocenter, our results ?0.06 bar due coseismic deformation, accounts for ?85% total changes. This below assumed triggering threshold 0.1 and, compared annual loading rate plate interface, represents clock advance approximately only 2 months. However, find sixteen events with ? 5 southern region regions > bar, indicating potential event. Interestingly, while increases positive changes, reduces them. opposite polarity displacements choice. generates surface fit better GPS-observed landward displacement pattern.
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ژورنال
عنوان ژورنال: Frontiers in Earth Science
سال: 2021
ISSN: ['2296-6463']
DOI: https://doi.org/10.3389/feart.2021.644834