气候变化领域集成服务门户(CCPortal): A 3800 yr paleoseismic record (Lake Hazar sediments, eastern Turkey): Implications for the East Anatolian Fault seismic cycle

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DOI	10.1016/j.epsl.2020.116152
	A 3800 yr paleoseismic record (Lake Hazar sediments, eastern Turkey): Implications for the East Anatolian Fault seismic cycle
	Hubert-Ferrari A.; Lamair L.; Hage S.; Schmidt S.; Çağatay M.N.; Avşar U.
发表日期	2020
ISSN	0012821X
卷号	538
英文摘要	The East Anatolian Fault (EAF) in Turkey is a major active left-lateral strike-slip fault that was seismically active during the 19th century but mostly quiet during the 20th century. Geodetic data suggests that the fault is creeping along its central part. Here we focus on its seismic history as recorded in the sediments of Lake Hazar in the central part of the EAF. Sediment cores were studied using X-ray imagery, magnetic susceptibility, grain-size, loss-on-ignition and X-ray fluorescence measurements. Recurring thin, coarse-grained sediment units identified as turbidites in all cores were deposited synchronously at two deep study sites. The turbidite ages are inferred combining radiocarbon and radionuclide (137Cs and 210Pb) dating in an Oxcal model. A mean recurrence interval of ∼190 yrs is obtained over 3800 yrs. Ages of the recent turbidites correspond to historical earthquakes reported to have occurred along the EAF Zone or to paleoruptures documented in trenches just northeast of Lake Hazar. The turbidites are inferred to be earthquake-triggered. Our record demonstrates that Lake Hazar has been repeatedly subjected to significant seismic shaking over the past 3800 yrs. The seismic sources are variable: ∼65% of all turbidites are associated with an EAF source. The seismic cycle of central EAF is thus only partly impacted by creep. © 2020 Elsevier B.V.
关键词	creep East Anatolian Fault paleoseismology seismic shaking turbidites
英文关键词	Creep; Earthquake effects; Lakes; Magnetic susceptibility; Sediments; Coarse-grained sediments; Historical earthquakes; Loss on ignition; Mean recurrence intervals; Paleoseismology; Seismic shaking; turbidites; X-ray fluorescence measurement; Strike-slip faults; active fault; creep; fault zone; geodesy; lacustrine deposit; paleoseismicity; sediment core; seismology; strike-slip fault; turbidite; Elazig [Turkey]; Hazar Lake; Turkey
语种	英语
来源期刊	Earth and Planetary Science Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/202663
作者单位	University of Liège, Department of Geography, clos Mercator 3, Liège, 4000, Belgium; National Oceanography Centre Southampton, University of Southampton, United Kingdom; EPOC, Université de Bordeaux, France; Istanbul Teknik Universitesi, EMCOL Research Centre, İstanbul, Turkey; Middle East Technical University, Faculty of Engineering, Geological Engineering, Ankara, Turkey
推荐引用方式 GB/T 7714	Hubert-Ferrari A.,Lamair L.,Hage S.,et al. A 3800 yr paleoseismic record (Lake Hazar sediments, eastern Turkey): Implications for the East Anatolian Fault seismic cycle[J],2020,538.
APA	Hubert-Ferrari A.,Lamair L.,Hage S.,Schmidt S.,Çağatay M.N.,&Avşar U..(2020).A 3800 yr paleoseismic record (Lake Hazar sediments, eastern Turkey): Implications for the East Anatolian Fault seismic cycle.Earth and Planetary Science Letters,538.
MLA	Hubert-Ferrari A.,et al."A 3800 yr paleoseismic record (Lake Hazar sediments, eastern Turkey): Implications for the East Anatolian Fault seismic cycle".Earth and Planetary Science Letters 538(2020).