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dc.contributor.authorvan Dinther, Y.
dc.contributor.authorMai, Paul Martin
dc.contributor.authorDalguer, L. A.
dc.contributor.authorGerya, T. V.
dc.date.accessioned2015-05-03T13:48:30Z
dc.date.available2015-05-03T13:48:30Z
dc.date.issued2014-02-27
dc.identifier.citationModeling the seismic cycle in subduction zones: The role and spatiotemporal occurrence of off-megathrust earthquakes 2014, 41 (4):1194 Geophysical Research Letters
dc.identifier.issn00948276
dc.identifier.doi10.1002/2013GL058886
dc.identifier.urihttp://hdl.handle.net/10754/552100
dc.description.abstractShallow off-megathrust subduction events are important in terms of hazard assessment and coseismic energy budget. Their role and spatiotemporal occurrence, however, remain poorly understood. We simulate their spontaneous activation and propagation using a newly developed 2-D, physically consistent, continuum, viscoelastoplastic seismo-thermo-mechanical modeling approach. The characteristics of simulated normal events within the outer rise and splay and normal antithetic events within the wedge resemble seismic and seismological observations in terms of location, geometry, and timing. Their occurrence agrees reasonably well with both long-term analytical predictions based on dynamic Coulomb wedge theory and short-term quasi-static stress changes resulting from the typically triggering megathrust event. The impact of off-megathrust faulting on the megathrust cycle is distinct, as more both shallower and slower megathrust events arise due to occasional off-megathrust triggering and increased updip locking. This also enhances tsunami hazards, which are amplified due to the steeply dipping fault planes of especially outer rise events.
dc.publisherAmerican Geophysical Union (AGU)
dc.relation.urlhttp://doi.wiley.com/10.1002/2013GL058886
dc.rightsArchived with thanks to Geophysical Research Letters
dc.titleModeling the seismic cycle in subduction zones: The role and spatiotemporal occurrence of off-megathrust earthquakes
dc.typeArticle
dc.contributor.departmentComputational Earthquake Seismology (CES) Research Group
dc.contributor.departmentEarth Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalGeophysical Research Letters
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionSwiss Seismological Service; ETH Zürich; Zürich Switzerland
dc.contributor.institutionSwiss Seismological Service; ETH Zürich; Zürich Switzerland
dc.contributor.institutionInstitute of Geophysics; ETH Zürich; Zürich Switzerland
kaust.personMai, Paul Martin
refterms.dateFOA2018-06-14T05:01:44Z
dc.date.published-online2014-02-27
dc.date.published-print2014-02-28


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