dc.contributor.author | Cakir, Ziyadin | |
dc.contributor.author | Ergintav, Semih | |
dc.contributor.author | Akoglu, Ahmet M. | |
dc.contributor.author | Cakmak, Rahsan | |
dc.contributor.author | Tatar, Orhan | |
dc.contributor.author | Meghraoui, Mustapha | |
dc.date.accessioned | 2019-07-27T12:10:23Z | |
dc.date.accessioned | 2019-07-28T09:56:52Z | |
dc.date.available | 2019-07-27T12:10:23Z | |
dc.date.available | 2019-07-28T09:56:52Z | |
dc.date.issued | 2014 | |
dc.identifier.issn | 2169-9313 | |
dc.identifier.issn | 2169-9356 | |
dc.identifier.uri | https://dx.doi.org/10.1002/2014JB011360 | |
dc.identifier.uri | https://hdl.handle.net/20.500.12418/8156 | |
dc.description | WOS: 000345368500033 | en_US |
dc.description.abstract | We use the Persistent Scatterer Interferometric Synthetic Aperture Radar (PS-InSAR) technique with the European Space Agency's Envisat and ERS SAR data acquired on three neighboring descending tracks (T350, T078, and T307) to map the interseismic strain accumulation along a similar to 225km long, NW-SE trending section of the North Anatolian Fault that ruptured during the 1939, 1942, and 1943 earthquakes in eastern Turkey. We derive a line-of-sight velocity map of the region with a high spatial resolution and accuracy which, together with the maps of earthquake surface ruptures, shed light on the style of continental deformation and the relationships between the loading and release of interseismic strain along segmented continental strike-slip faults. In contrast with the geometric complexities at the ground surface that appear to control rupture propagation of the 1939 event, modeling of the high-resolution PS-InSAR velocity field reveals a fairly linear and narrow throughgoing shear zone with an overall 203mm/yr slip rate above an unexpectedly shallow 72km locking depth. Such a shallow locking depth may result from the postseismic effects following recent earthquakes or from a simplified model that assumes a uniform degree of locking with depth on the fault. A narrow throughgoing shear zone supports the thick lithosphere model in which continental strike-slip faults are thought to extend as discrete shear zones through the entire crust. Fault segmentation previously reported from coseismic surface ruptures is thus likely inherited from heterogeneities in the upper crust that either preexist and/or develop during coseismic rupture propagation. The geometrical complexities that apparently persist for long periods may guide the dynamic rupture propagation surviving thousands of earthquake cycles. Key Points <list list-type="bulleted" id="jgrb50868-list-0001"><list-item id="jgrb50868-li-0001">InSAR data across the North Anatolian Fault support the thick lithosphere model<list-item id="jgrb50868-li-0002">Along-strike complexity of strike-slip faults disappears at depth<list-item id="jgrb50868-li-0003">InSAR data imply shallow locking depths (< 10 km) on the North Anatolian Fault | en_US |
dc.description.sponsorship | European Space Agency [AOTR-2436]; DPT [2006-120220 K]; TUBITAK [107Y281] | en_US |
dc.description.sponsorship | We thank Romain Jolivet and an anonymous reviewer for their constructive comments that helped us to greatly improve the manuscript. We have also benefitted from discussions with Rob Reilinger and Michel Bouchon. Part of the SAR data was initially provided by European Space Agency under Category-1 project AOTR-2436. All of the SAR images used in this work can be obtained free of charge from the GEO portal (http://supersites.earthobservations.org). Data processing was done at the TUBITAK ULAKBIM High Performance and Grid Computing Centre (Turkey). PS-InSAR velocity field data obtained and used in this study can be found in the supporting information. Financial support is from DPT project 2006-120220 K and TUBITAK project 107Y281. The maps in this paper were generated using the public domain Generic Mapping Tools (GMT) software [Wessel and Smith, 1998]. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | AMER GEOPHYSICAL UNION | en_US |
dc.relation.isversionof | 10.1002/2014JB011360 | en_US |
dc.rights | info:eu-repo/semantics/openAccess | en_US |
dc.subject | InSAR | en_US |
dc.subject | North Anatolian Fault | en_US |
dc.subject | interseismic loading | en_US |
dc.subject | fault segmentation | en_US |
dc.subject | continental deformation | en_US |
dc.title | InSAR velocity field across the North Anatolian Fault (eastern Turkey): Implications for the loading and release of interseismic strain accumulation | en_US |
dc.type | article | en_US |
dc.relation.journal | JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH | en_US |
dc.contributor.department | [Cakir, Ziyadin] Istanbul Tech Univ, Fac Mines, TR-80626 Istanbul, Turkey -- [Cakir, Ziyadin -- Cakmak, Rahsan] Inst Marine & Earth Sci, TUBITAK MRC, Izmit, Turkey -- [Ergintav, Semih] Bogazici Univ, Kandilli Observ, Istanbul, Turkey -- [Ergintav, Semih] Bogazici Univ, Earthquake Res Inst, Dept Geodesy, Istanbul, Turkey -- [Akoglu, Ahmet M.] King Abdullah Univ Sci & Technol, Phys Sci & Engn Div, Thuwal, Saudi Arabia -- [Tatar, Orhan] Cumhuriyet Univ, Dept Geol, Sivas, Turkey -- [Meghraoui, Mustapha] Univ Strasbourg, CNRS, Inst Phys Globe Strasbourg, Strasbourg, France | en_US |
dc.contributor.authorID | ergintav, semih -- 0000-0001-7080-183X; | en_US |
dc.identifier.volume | 119 | en_US |
dc.identifier.issue | 10 | en_US |
dc.identifier.endpage | 7943 | en_US |
dc.identifier.startpage | 7934 | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |