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dc.contributor.authorToda, Shinji  Concept link
dc.contributor.authorStein, Ross S.  Concept link
dc.contributor.authorLin, Jian  Concept link
dc.date.accessioned2011-08-29T17:54:51Z
dc.date.available2012-02-06T09:31:56Z
dc.date.issued2011-08-06
dc.identifier.citationGeophysical Research Letters 38 (2011): L00G03en_US
dc.identifier.urihttps://hdl.handle.net/1912/4791
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): L00G03, doi:10.1029/2011GL047834.en_US
dc.description.abstractWe report on a broad and unprecedented increase in seismicity rate following the M=9.0 Tohoku mainshock for M ≥ 2 earthquakes over inland Japan, parts of the Japan Sea and Izu islands, at distances of up to 425 km from the locus of high (≥15 m) seismic slip on the megathrust. Such an increase was not seen for the 2004 M=9.1 Sumatra or 2010 M=8.8 Chile earthquakes, but they lacked the seismic networks necessary to detect such small events. Here we explore the possibility that the rate changes are the product of static Coulomb stress transfer to small faults. We use the nodal planes of M ≥ 3.5 earthquakes as proxies for such small active faults, and find that of fifteen regions averaging ∼80 by 80 km in size, 11 show a positive association between calculated stress changes and the observed seismicity rate change, 3 show a negative correlation, and for one the changes are too small to assess. This work demonstrates that seismicity can turn on in the nominal stress shadow of a mainshock as long as small geometrically diverse active faults exist there, which is likely quite common.en_US
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dc.language.isoen_USen_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.urihttps://doi.org/10.1029/2011GL047834
dc.subjectCoulomb stressen_US
dc.subjectCentral Japanen_US
dc.subjectSeismicity excitationen_US
dc.titleWidespread seismicity excitation throughout central Japan following the 2011 M=9.0 Tohoku earthquake and its interpretation by Coulomb stress transferen_US
dc.typeArticleen_US
dc.identifier.doi10.1029/2011GL047834


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