dc.contributor.author | Gorgun, ETHEM | |
dc.date.accessioned | 2021-03-06T20:13:49Z | |
dc.date.available | 2021-03-06T20:13:49Z | |
dc.date.issued | 2013 | |
dc.identifier.citation | Gorgun E., "The 2011 October 23 M-w 7.2 Van-Ercis, Turkey, earthquake and its aftershocks", GEOPHYSICAL JOURNAL INTERNATIONAL, cilt.195, ss.1052-1067, 2013 | |
dc.identifier.issn | 0956-540X | |
dc.identifier.other | av_f94b97b5-7ad2-45f0-888c-6a78228970f0 | |
dc.identifier.other | vv_1032021 | |
dc.identifier.uri | http://hdl.handle.net/20.500.12627/163287 | |
dc.identifier.uri | https://doi.org/10.1093/gji/ggt264 | |
dc.description.abstract | On 2011 October 23, the Lake Van region in eastern Anatolia was hit by an M-w = 7.2 earthquake. The Van-Ercis earthquake (EQ) occurred 20 km east of Lake Van. Centroid moment tensors (CMT) for 108 events with M-w between 4.0 and 7.2 are computed by applying a waveform inversion method on data from the Kandilli Observatory and Earthquake Research Institute (KOERI) broad-band seismic network. The time span of data covers the period between 2011 October 23 and 2012 February 24. The main shock is a shallow focus thrust event at a depth of 15 km. Focal depths of aftershocks range from 12 to 25 km. The seismic moment (M-0) of the main shock is estimated to be 0.75 x 10(20) Nm. The focal mechanisms of the aftershocks are mainly thrust faulting with a variable and sometimes significant strike-slip component. This geometry indicates a thrust faulting regime with NE-SW trending direction of T-axis in the entire activated region. A stress tensor inversion of focal mechanism data is performed to obtain a more accurate picture of the Van-Ercis EQ stress field. The stress tensor inversion results show a predominant thrust stress regime with a NW-SE to NNE-SSW oriented maximum horizontal compressive stress (S-H). The secondary fault system striking mostly ENE-WSW is activated generally with right-lateral strike-slip in the east of the main shock. This difference in mechanism suggest that towards the east, a different fault system is activated with respect to the NE-SW trending thrust faults beneath Van-Ercis region and more to the west. Thus, to first order, the Lake Van region is characterized by a homogeneous intraplate stress field. | |
dc.language.iso | eng | |
dc.subject | Temel Bilimler (SCI) | |
dc.subject | Mühendislik ve Teknoloji | |
dc.subject | JEOKİMYA VE JEOFİZİK | |
dc.subject | Yerbilimleri | |
dc.subject | Jeofizik Mühendisliği | |
dc.title | The 2011 October 23 M-w 7.2 Van-Ercis, Turkey, earthquake and its aftershocks | |
dc.type | Makale | |
dc.relation.journal | GEOPHYSICAL JOURNAL INTERNATIONAL | |
dc.contributor.department | İstanbul Üniversitesi , Mühendislik Fakültesi , Jeofizik Mühendisliği Bölümü | |
dc.identifier.volume | 195 | |
dc.identifier.issue | 2 | |
dc.identifier.startpage | 1052 | |
dc.identifier.endpage | 1067 | |
dc.contributor.firstauthorID | 74628 | |