Lithospheric velocity structure of South China Sea basin from ocean bottom seismometer ambient noise tomography

doi:10.1016/j.tecto.2023.230008

CORC > 海洋研究所 > 中国科学院海洋研究所

	Lithospheric velocity structure of South China Sea basin from ocean bottom seismometer ambient noise tomography
	Cheng, Liqun 9,10; Fang, Yinxia 9,10; Niu, Xiongwei 2,9,10; Li, Tingzi 8; Dong, Chongzhi 9; Zhao, Yanghui 9; Hu, Hao 7; Kong, Fansheng 9; Tan, Pingchuan 9; Ruan, Aiguo 9
刊名	TECTONOPHYSICS
	2023-10-05
卷号	864 页码:14
关键词	Ocean Bottom Seismometer (OBS) Ambient noise Phase velocity South China Sea basin Post-spreading magmatism
ISSN号	0040-1951
DOI	10.1016/j.tecto.2023.230008
通讯作者	Fang, Yinxia(fangyx@sio.org.cn) ; Niu, Xiongwei(xwniu@sio.org.cn)
英文摘要	The South China Sea (SCS) is a typical marginal sea basin formed by the seafloor spreading under the tectonic background of plate convergence. Many crustal-scale studies indicate that the SCS basin has undergone asymmetric spreading, multi-phase ridge jumps, and intense post-spreading volcanic activity. Due to the lack of seismic data in the oceanic basin of the SCS, it remains unclear about the scale and basin control of the Zhongnan fault, the magma source depth of the SCS basin, and the transport channel after the cessation of seafloor spreading. Phase velocity derived from ambient noise surface wave tomography may provide useful information to shed light on the mechanisms of the aforementioned problems. From October 2019 to July 2020, a passive source seismic experiment was carried out with many Ocean Bottom Seismometers (OBS) deployed in a broad area of the SCS. Based on the seismic ambient noise data recorded by 16 OBSs in the SCS basin, we inverted the phase velocity images over a period range of 10-20 s using ambient noise surface wave tomography. Our results indicate that the Zhongnan fault zone is a lithospheric-scale fault, which played a regulating role in the expansion of the SCS basin from the East Subbasin to the Southwest Subbasin. In addition, the low-velocity body in the north flank of the Southwest Subbasin extends from the post-spreading seamounts on the ocean crust to the uppermost mantle (i.e., about 10-30 km), which indicates an oblique magma migration during the postspreading volcanism.
资助项目	National Natural Science Foundation of China[41890811] ; National Natural Science Foundation of China[42276064] ; National Natural Science Foundation of China[42076047] ; National Natural Science Foundation of China[42106068] ; Scientific Research Fund of the Second Institute of Oceanography[JG2204] ; Scientific Research Fund of the Second Institute of Oceanography[2021M691412] ; China Postdoctoral Science Foundation[DH-2022KF0213] ; Science Foundation of Donghai Laboratory ; [JG1901]
WOS关键词	SOUTHWESTERN SUBBASIN ; SEISMIC NOISE ; BENEATH ; MANTLE ; EVOLUTION ; INSIGHTS ; CRUST ; CONSTRAINTS ; INVERSION ; VOLCANO
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:001078504900001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/181658]
专题	中国科学院海洋研究所
通讯作者	Fang, Yinxia; Niu, Xiongwei
作者单位	1.Taihu Lab Deepsea Technol Sci, Wuxi 214028, Peoples R China 2.Donghai Lab, Zhoushan 316021, Zhejiang, Peoples R China 3.Univ Malaysia Terengganu, Fac Sci & Marine Environm, Paleoceanog Res Interest Grp, Kuala Nerus 21300, Terengganu, Malaysia 4.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 5.Sun Yat sen Univ, Sch Earth Sci & Engn, Zhuhai 519082, Peoples R China 6.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519082, Peoples R China 7.Southern Univ Sci & Technol, Acad Adv Interdisciplinary Studies, Shenzhen 518055, Peoples R China 8.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 9.Minist Nat Resources, Inst Oceanog 2, Key Lab submarine Geosci, Hangzhou 310012, Peoples R China 10.Shanghai Jiao Tong Univ, Sch Oceanog, Shanghai 200030, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Liqun,Fang, Yinxia,Niu, Xiongwei,et al. Lithospheric velocity structure of South China Sea basin from ocean bottom seismometer ambient noise tomography[J]. TECTONOPHYSICS,2023,864:14.
APA	Cheng, Liqun.,Fang, Yinxia.,Niu, Xiongwei.,Li, Tingzi.,Dong, Chongzhi.,...&Du, Xinguang.(2023).Lithospheric velocity structure of South China Sea basin from ocean bottom seismometer ambient noise tomography.TECTONOPHYSICS,864,14.
MLA	Cheng, Liqun,et al."Lithospheric velocity structure of South China Sea basin from ocean bottom seismometer ambient noise tomography".TECTONOPHYSICS 864(2023):14.