气候变化领域集成服务门户(CCPortal): Isotropic and Anisotropic P Wave Velocity Structures of the Crust and Uppermost Mantle Beneath Turkey

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DOI	10.1029/2020JB019566
	Isotropic and Anisotropic P Wave Velocity Structures of the Crust and Uppermost Mantle Beneath Turkey
	Wang H.; Huang Z.; Eken T.; Keleş D.; Kaya-Eken T.; Confal J.M.; Erman C.; Yolsal-Çevikbilen S.; Zhao D.; Taymaz T.
发表日期	2020
ISSN	21699313
卷号	125 期号:12
英文摘要	Compressional and extensional tectonics following northward plate convergences since the Miocene have formed the major surface features in Turkey, such as faulting and orogeny. Despite increasing efforts in last few decades aiming to elucidate the current architecture of the crust and mantle beneath Turkey, several issues regarding the depth extent of the deformation zones, crust-mantle interaction (e.g., coupling and decoupling) in relation to the deformation, and stress transmission in the lithosphere remain elusive. Here we present high-resolution 3-D P wave isotropic and azimuthal anisotropic velocity models of the crust and uppermost mantle beneath Turkey by inverting 204,531 P wave arrival times of 8,103 local crustal earthquakes. Our results reveal low-velocity anomalies or velocity contrasts down to the uppermost mantle along the North and East Anatolian Fault Zones. The fast velocity directions (FVDs) of azimuthal anisotropy in the lower crust and uppermost mantle are parallel to the regional maximum extensional directions in western Turkey, and the FVDs in the crust and uppermost mantle are parallel to the surface structures in southeastern Turkey. These results indicate that vertically coherent deformation between the crust and uppermost mantle occurs in western and southeastern Turkey. However, in central northern Turkey, the FVDs in the uppermost mantle are oblique to both the FVDs in the lower crust and the maximum shear directions derived from GPS measurements, suggesting that the crust and lithospheric mantle are decoupled there. © 2020. The Authors.
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187468
作者单位	School of Earth Sciences and Engineering, Nanjing University, Nanjing, China; Department of Geophysical Engineering, The Faculty of Mines, Istanbul Technical University, Istanbul, Turkey; Kandilli Observatory and Earthquake Research Institute, Geodesy Department, Boğaziçi University, Istanbul, Turkey; Department of Geophysics, Graduate School of Science, Tohoku University, Sendai, Japan
推荐引用方式 GB/T 7714	Wang H.,Huang Z.,Eken T.,et al. Isotropic and Anisotropic P Wave Velocity Structures of the Crust and Uppermost Mantle Beneath Turkey[J],2020,125(12).
APA	Wang H..,Huang Z..,Eken T..,Keleş D..,Kaya-Eken T..,...&Taymaz T..(2020).Isotropic and Anisotropic P Wave Velocity Structures of the Crust and Uppermost Mantle Beneath Turkey.Journal of Geophysical Research: Solid Earth,125(12).
MLA	Wang H.,et al."Isotropic and Anisotropic P Wave Velocity Structures of the Crust and Uppermost Mantle Beneath Turkey".Journal of Geophysical Research: Solid Earth 125.12(2020).