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dc.contributor.authorWada, Ikuko  Concept link
dc.contributor.authorRychert, Catherine A.  Concept link
dc.contributor.authorWang, Kelin  Concept link
dc.date.accessioned2011-08-02T14:28:16Z
dc.date.available2012-01-08T09:30:48Z
dc.date.issued2011-07-08
dc.identifier.citationGeophysical Research Letters 38 (2011): L13308en_US
dc.identifier.urihttps://hdl.handle.net/1912/4740
dc.descriptionAuthor Posting. © American Geophysical Union, 2011. 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 38 (2011): L13308, doi:10.1029/2011GL047705.en_US
dc.description.abstractIn the forearc mantle wedge, the thermal field depends strongly on slab-driven mantle wedge flow. The flow is in turn affected by the thermal field via the temperature dependence of mantle rheology. Using thermal modeling, we show that the nonlinear feedback between the thermal and flow fields always leads to complete stagnation of the mantle wedge over a shallow, weakened part of the slab-mantle interface and an abrupt onset of mantle flow further down-dip. The abrupt increase in flow velocity leads to a sharp thermal transition from a cold stagnant to a hot flowing part of the wedge. This sharp thermal transition is inherent to all subduction zones, explaining a commonly observed sharp arc-ward increase in seismic attenuation.en_US
dc.description.sponsorshipThis research was partially supported by National Science Foundation through a MARGINS postdoctoral fellowship (NSF OCE‐0840800) and by Natural Environment Research Council.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.urihttps://doi.org/10.1029/2011GL047705
dc.subjectMantle rheologyen_US
dc.subjectMantle wedgeen_US
dc.subjectSeismic attenuationen_US
dc.subjectSubduction zoneen_US
dc.subjectThermal structureen_US
dc.titleSharp thermal transition in the forearc mantle wedge as a consequence of nonlinear mantle wedge flowen_US
dc.typeArticleen_US
dc.identifier.doi10.1029/2011GL047705


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