The discovery of an active fault in the Qiongdongnan Basin of the northern South China Sea

doi:10.1016/j.marpetgeo.2024.106777

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	The discovery of an active fault in the Qiongdongnan Basin of the northern South China Sea
	Zeng, Fanchang 4,5; Wang, Dawei 3,4; Li, Zhigang 3,5; Wang, Weitao 3,5; Dai, Xiangming 5; Sun, Yue 1,4; Lv, Liangwei 5; Wang, Weiwei 2; Zheng, Yu 3,4; Su, Zhiyi 5
刊名	MARINE AND PETROLEUM GEOLOGY
	2024-05-01
卷号	163 页码:9
关键词	South China Sea Active fault Continental slope fault zone Seismic reflection profile Marine geological hazards
ISSN号	0264-8172
DOI	10.1016/j.marpetgeo.2024.106777
英文摘要	Fault activities in sea areas always produce devastative marine geohazards. For marine geohazard assessment, it is important to know the location, geometric structure, and activity regularity of active faults. In this study, highresolution multi -channel seismic and topographic data are used to investigate the exact location, geometric structure and latest activity of the Continental Slope Fault Zone (CSFZ) in the northern South China Sea. The results show that the Qiongdongnan (QDN) segment of the CSFZ is a 194 km long NEE -trending fault zone that developed near the transition of continental shelf and slope. In its geometric structure, the CSFZ (QDN segment) cuts through the Cenozoic basement and breaks upward to near the seafloor with high -angle dip. According to whether it ruptures to the seafloor, it can be divided into eastern and western segments. In the western segment, the fault scarps about 8 similar to 9 m high can clearly be seen on the seafloor. Whereas in the eastern segment, the fault shows a blind characteristic below the seafloor. The analysis of fault throws and expansion indices show that CSFZ (QDN segment) have remained active since the late Pleistocene. Due to the CSFZ is an active fault and geographically adjacent steep slope, which may cause large interpolate landslides, and then leading to destructive tsunamis. As a result, the CSFZ has great seismogenic potential and may produce marine geohazard chain. Thus, it is of great significance to the assessment of marine geohazard chain posed by the CSFZ for improving hazard mitigation.
资助项目	National Key Research and Development Program of China[2022YFC2805503] ; National Natural Science Foundation of China[42176083] ; National Natural Science Foundation of China[42172233] ; Guangdong Province Introduced Innovative R & D Team of Geological Processes and Natural Disasters around the South China Sea[2016ZT06N331]
WOS关键词	2008 WENCHUAN EARTHQUAKE ; CENTRAL DEPRESSION BELT ; TECTONIC EVOLUTION ; CONTINENTAL-SLOPE ; DETACHMENT FAULT ; SEISMIC DATA ; GROWTH ; SYSTEM ; LINKAGE ; MARGIN
WOS研究方向	Geology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:001205220400001
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Guangdong Province Introduced Innovative R & D Team of Geological Processes and Natural Disasters around the South China Sea
内容类型	期刊论文
源URL	[http://ir.idsse.ac.cn/handle/183446/10995]
专题	研究生部
通讯作者	Wang, Dawei; Li, Zhigang; Wang, Weitao
作者单位	1.Univ Barcelona, Fac Earth Sci, Dept Earth & Ocean Dynam, CRG Marine Geosci, Barcelona 08028, Spain 2.China Univ Petr East China, Coll Control Sci & Engn, Qingdao 266580, Peoples R China 3.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519000, Peoples R China 4.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China 5.Sun Yat Sen Univ, Sch Earth Sci & Engn, Guangdong Prov Key Lab Geodynam & Geohazards, Zhuhai 519000, Peoples R China
推荐引用方式 GB/T 7714	Zeng, Fanchang,Wang, Dawei,Li, Zhigang,et al. The discovery of an active fault in the Qiongdongnan Basin of the northern South China Sea[J]. MARINE AND PETROLEUM GEOLOGY,2024,163:9.
APA	Zeng, Fanchang.,Wang, Dawei.,Li, Zhigang.,Wang, Weitao.,Dai, Xiangming.,...&Zhang, Peizhen.(2024).The discovery of an active fault in the Qiongdongnan Basin of the northern South China Sea.MARINE AND PETROLEUM GEOLOGY,163,9.
MLA	Zeng, Fanchang,et al."The discovery of an active fault in the Qiongdongnan Basin of the northern South China Sea".MARINE AND PETROLEUM GEOLOGY 163(2024):9.