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DOI	10.1785/0120180318
	Detection of a Thick and Weak Low-Velocity Layer atop the Mantle Transition Zone beneath the Northeastern South China Sea from Triplicated P-Wave Waveform Modeling
	Li, Guohui; Li, Yunyue Elita; Zhang, Heng; Bai, Ling; Ding, Lin; Li, Wenlan; Cui, Qinghui; Zhou, Yuanze
通讯作者	Li, GH (通讯作者)
发表日期	2019
ISSN	0037-1106
EISSN	1943-3573
起始页码	1181
结束页码	1193
卷号	109 期号:4
英文摘要	Triplicated P waveforms related to the 410-km discontinuity from five intermediate-depth earthquakes in the central Philippines are clearly recorded by the Chinese Digital Seismic Network, but some branches of the S-wave triplications are obscure. Matching the observed P-wave triplications with synthetics through a grid-search technique, we obtain the best-fit 1D P-wave velocity model near the 410-km discontinuity beneath the northeastern South China Sea. In such a model, a low-velocity layer (LVL) is found to reside atop the mantle transition zone, and it is characterized by a thickness of 92.5 +/- 11.5 km and a P-wave velocity decrement of 1.5% +/- 0.1% compared with the IASP91 model. The relatively thick and weak LVL is possibly a response of a small amount of remnant hydrous partial melts after plume-like upwelling.
关键词	NOMINALLY ANHYDROUS MINERALS HYDROUS SILICATE MELT SHEAR-VELOCITY SEISMIC DISCONTINUITY STORAGE CAPACITY CENOZOIC BASALTS TRAVEL-TIME WATER PHASE DENSITY
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000477837700001
来源期刊	BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259484
推荐引用方式 GB/T 7714	Li, Guohui,Li, Yunyue Elita,Zhang, Heng,et al. Detection of a Thick and Weak Low-Velocity Layer atop the Mantle Transition Zone beneath the Northeastern South China Sea from Triplicated P-Wave Waveform Modeling[J]. 中国科学院青藏高原研究所,2019,109(4).
APA	Li, Guohui.,Li, Yunyue Elita.,Zhang, Heng.,Bai, Ling.,Ding, Lin.,...&Zhou, Yuanze.(2019).Detection of a Thick and Weak Low-Velocity Layer atop the Mantle Transition Zone beneath the Northeastern South China Sea from Triplicated P-Wave Waveform Modeling.BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA,109(4).
MLA	Li, Guohui,et al."Detection of a Thick and Weak Low-Velocity Layer atop the Mantle Transition Zone beneath the Northeastern South China Sea from Triplicated P-Wave Waveform Modeling".BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 109.4(2019).