SCSIO OpenIR  > 中科院边缘海地质重点实验室
Different origins of seafloor undulations in a submarine canyon system, northern South China Sea, based on their seismic character and relative location
Li, Jian1; Li, Wei1; Alves, Tiago M.; Rebesco, Michele3; Zhan, Wenhuan1; Sun, Jie; Mitchell, Neil C.; Wu, Shiguo5
2019
Source PublicationMARINE GEOLOGY
ISSN0025-3227
Volume413Pages:99
AbstractHigh-resolution 2D and 3D seismic data are used to investigate the morphology, internal architecture and origin of widespread seafloor undulations in the eastern area of a submarine canyon system, northern South China Sea. The seafloor undulations reveal similar seafloor morphologies, and three different types (Types A, B and C) can be classified based on their relative locations and internal seismic characters. Types A and B are observed in the canyon areas, whereas Type C occurs in the canyon heads. Seismic reflections within Types A and C are continuous and have an upslope migrating trend, while Type B seafloor undulations are separated by listric faults. Our analysis reveals the origins of these three different types of seafloor undulations. Type A seafloor undulations are sediment waves formed by turbidity currents flowing through the submarine canyons. Gravity-driven submarine creep resulted in the formation of Type B seafloor undulations. Type C undulations are sediment waves generated by internal waves interacting with the continental slope. Our results provide information about the origin of widespread seafloor undulations in other submarine canyon systems. It is also of great significance to future risk assessments, as the study area now is one of the most active regions for hydrocarbon exploration in SE Asia.
DepartmentOMG
KeywordSouth China Sea Submarine canyons Seafloor undulations Bathymetry Internal seismic character
DOI10.1016/j.margeo.2019.04.007
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/17948
Collection中科院边缘海地质重点实验室
Affiliation1.Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Ocean & Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Alves, Tiago M.] Cardiff Univ, Sch Earth & Ocean Sci, 3D Seism Lab, Main Bldg,Pk Pl, Cardiff CF10 3AT, S Glam, Wales
4.Inst Nazl Oceanog & Geofis Sperimentale OGS, Borgo Grotta Gigante 42-C, I-34010 Trieste, Italy
5.Mitchell, Neil C.] Univ Manchester, Sch Earth & Environm Sci, Manchester M13 9PL, Lancs, England
6.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China
Recommended Citation
GB/T 7714
Li, Jian,Li, Wei,Alves, Tiago M.,et al. Different origins of seafloor undulations in a submarine canyon system, northern South China Sea, based on their seismic character and relative location[J]. MARINE GEOLOGY,2019,413:99, 111.
APA Li, Jian.,Li, Wei.,Alves, Tiago M..,Rebesco, Michele.,Zhan, Wenhuan.,...&Wu, Shiguo.(2019).Different origins of seafloor undulations in a submarine canyon system, northern South China Sea, based on their seismic character and relative location.MARINE GEOLOGY,413,99.
MLA Li, Jian,et al."Different origins of seafloor undulations in a submarine canyon system, northern South China Sea, based on their seismic character and relative location".MARINE GEOLOGY 413(2019):99.
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