Postseismic deformation following the Mw 7.2, 23 October 2011 Van earthquake (Turkey): Evidence for aseismic fault reactivation

Handle URI:
http://hdl.handle.net/10754/552110
Title:
Postseismic deformation following the Mw 7.2, 23 October 2011 Van earthquake (Turkey): Evidence for aseismic fault reactivation
Authors:
Dogan, Ugur; Demir, Deniz Ö.; Çakir, Ziyadin; Ergintav, Semih; Ozener, Haluk; Akoğlu, Ahmet M.; Nalbant, Süleyman S.; Reilinger, Robert
Abstract:
Geodetic measurements following the 23 October 2011, Mw = 7.2 Van (eastern Turkey) earthquake reveal that a fault splay on the footwall block of the coseismic thrust fault was reactivated and slipped aseismically for more than 1.5 years following the earthquake. Although long-lasting aseismic slip on coseismic ruptures has been documented following many large earthquakes, long-lasting, triggered slip on neighboring faults that did not rupture during the earthquake has not been reported previously. Elastic dislocation and Coulomb stress modeling indicate that the postseismic deformation can be adequately explained by shallow slip on both the coseismic and splay fault and is likely driven mostly by coseismic stress changes. Thus, the slip deficit on the shallow section of the coseismic fault indicated by interferometric synthetic aperture radar-based models has been partially filled by aseismic slip, suggesting a lower likelihood for a large earthquake on the shallow section of the Van fault than suggested by previous studies.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Postseismic deformation following the Mw 7.2, 23 October 2011 Van earthquake (Turkey): Evidence for aseismic fault reactivation 2014, 41 (7):2334 Geophysical Research Letters
Publisher:
Wiley-Blackwell
Journal:
Geophysical Research Letters
Issue Date:
16-Apr-2014
DOI:
10.1002/2014GL059291
Type:
Article
ISSN:
00948276
Additional Links:
http://doi.wiley.com/10.1002/2014GL059291
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorDogan, Uguren
dc.contributor.authorDemir, Deniz Ö.en
dc.contributor.authorÇakir, Ziyadinen
dc.contributor.authorErgintav, Semihen
dc.contributor.authorOzener, Haluken
dc.contributor.authorAkoğlu, Ahmet M.en
dc.contributor.authorNalbant, Süleyman S.en
dc.contributor.authorReilinger, Roberten
dc.date.accessioned2015-05-03T14:26:48Zen
dc.date.available2015-05-03T14:26:48Zen
dc.date.issued2014-04-16en
dc.identifier.citationPostseismic deformation following the Mw 7.2, 23 October 2011 Van earthquake (Turkey): Evidence for aseismic fault reactivation 2014, 41 (7):2334 Geophysical Research Lettersen
dc.identifier.issn00948276en
dc.identifier.doi10.1002/2014GL059291en
dc.identifier.urihttp://hdl.handle.net/10754/552110en
dc.description.abstractGeodetic measurements following the 23 October 2011, Mw = 7.2 Van (eastern Turkey) earthquake reveal that a fault splay on the footwall block of the coseismic thrust fault was reactivated and slipped aseismically for more than 1.5 years following the earthquake. Although long-lasting aseismic slip on coseismic ruptures has been documented following many large earthquakes, long-lasting, triggered slip on neighboring faults that did not rupture during the earthquake has not been reported previously. Elastic dislocation and Coulomb stress modeling indicate that the postseismic deformation can be adequately explained by shallow slip on both the coseismic and splay fault and is likely driven mostly by coseismic stress changes. Thus, the slip deficit on the shallow section of the coseismic fault indicated by interferometric synthetic aperture radar-based models has been partially filled by aseismic slip, suggesting a lower likelihood for a large earthquake on the shallow section of the Van fault than suggested by previous studies.en
dc.publisherWiley-Blackwellen
dc.relation.urlhttp://doi.wiley.com/10.1002/2014GL059291en
dc.rightsArchived with thanks to Geophysical Research Lettersen
dc.titlePostseismic deformation following the Mw 7.2, 23 October 2011 Van earthquake (Turkey): Evidence for aseismic fault reactivationen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalGeophysical Research Lettersen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionDepartment of Geomatic Engineering; Yildiz Technical University; Istanbul Turkeyen
dc.contributor.institutionDepartment of Geomatic Engineering; Yildiz Technical University; Istanbul Turkeyen
dc.contributor.institutionDepartment of Geology; Istanbul Technical University; Istanbul Turkeyen
dc.contributor.institutionDepartment of Geodesy; Kandilli Observatory and Earthquake Research Institute; Bogazici University; Istanbul Turkeyen
dc.contributor.institutionDepartment of Geodesy; Kandilli Observatory and Earthquake Research Institute; Bogazici University; Istanbul Turkeyen
dc.contributor.institutionEarth and Marine Sciences Institute; TUBITAK MRC; Izmit Turkeyen
dc.contributor.institutionDepartment of Earth, Atmospheric, and Planetary Sciences; Massachusetts Institute of Technology; Cambridge Massachusetts USAen
dc.contributor.institutionEnvironmental Sciences Research Institute, University of Ulster, Coleraine, UKen
kaust.authorAkoglu, Ahmeten
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