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dc.contributor.authorLiu, Yajing  Concept link
dc.date.accessioned2013-07-02T15:31:52Z
dc.date.available2014-10-22T08:57:22Z
dc.date.issued2013-04-15
dc.identifier.citationGeophysical Research Letters 40 (2013): 1311–1316en_US
dc.identifier.urihttps://hdl.handle.net/1912/6032
dc.descriptionAuthor Posting. © American Geophysical Union, 2013. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 40 (2013): 1311–1316, doi:10.1002/grl.50298.en_US
dc.description.abstractEpisodic slow slip events (SSEs) typically involve a few millimeters to centimeters of slip over several days to months at depths near or further downdip of megathrust seismogenic zones. Despite its widespread presence in subduction margins, it remains unknown how SSEs interact with the seismogenic zone and affect megathrust ruptures. Here, I construct a 2-D thrust fault model governed by rate-state friction to investigate how fault dilatancy influences the amplitude and spatial distribution of‘ coseismic slip, afterslip, and SSEs. Model results illustrate that, under strong dilatancy and high pore pressure around the friction stability transition, coseismic rupture stops at the onset of SSEs. Modeled SSEs have lower velocities, longer recurrence intervals and durations, and larger slip amounts as dilatancy becomes stronger, demonstrating a transition from short-term to long-term type of SSE behavior. These results qualitatively explain the range of spatial distributions of SSEs and megathrust ruptures observed or inferred in natural subduction zones. Furthermore, the relative depths of SSEs and megathrust afterslip may serve as an indicator of dilatancy effectiveness.en_US
dc.description.sponsorshipThis work was supported by NSF-EAR award 1015221 to Liu at WHOI and a NSERC Discovery Grant to Liu at McGill.en_US
dc.format.mimetypetext/plain
dc.format.mimetypeapplication/pdf
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dc.language.isoen_USen_US
dc.publisherJohn Wiley & Sonsen_US
dc.relation.urihttps://doi.org/10.1002/grl.50298
dc.subjectSlow slip eventsen_US
dc.subjectDilatancy strengtheningen_US
dc.subjectMegathrust ruptureen_US
dc.titleNumerical simulations on megathrust rupture stabilized under strong dilatancy strengthening in slow slip regionen_US
dc.typeArticleen_US
dc.description.embargo2013-10-15en_US
dc.identifier.doi10.1002/grl.50298


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