IDSSE OpenIR  > 深海科学研究部  > 深海地球物理与资源研究室
Different origins of seafloor undulations in a submarine canyon system, northern South China Sea, based on their seismic character and relative location
Li, Jian1,2; Li, Wei1,2; Alves, Tiago M.3; Rebesco, Michele4; Zhan, Wenhuan1,2; Sun, Jie1; Mitchell, Neil C.5; Wu, Shiguo6
2019-07-01
Source PublicationMARINE GEOLOGY
ISSN0025-3227
Volume413Issue:1Pages:99-111
Abstract

High-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.

KeywordSouth China Sea Submarine Canyons Seafloor Undulations Bathymetry Internal Seismic Character
DOI10.1016/j.margeo.2019.04.007
Indexed BySCI
Funding OrganizationNational Scientific Foundation of China ; Key Laboratory of Ocean and Marginal Sea Geology, Chinese Academy of Sciences ; CAS Pioneer Hundred Talents Program
Language英语
Funding ProjectNational Scientific Foundation of China[41876054] ; Key Laboratory of Ocean and Marginal Sea Geology, Chinese Academy of Sciences[OMG18-09] ; CAS Pioneer Hundred Talents Program
WOS KeywordPearl River Mouth ; Deep-water Area ; Current Sediment Waves ; Continental-slope ; Turbidity Currents ; Internal Waves ; Morphobathymetric Analysis ; Contour Currents ; Dongsha Islands ; Mass Movements
WOS Research AreaGeology ; Oceanography
WOS SubjectGeosciences, Multidisciplinary ; Oceanography
WOS IDWOS:000474677200007
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.idsse.ac.cn/handle/183446/6895
Collection深海科学研究部_深海地球物理与资源研究室
Corresponding AuthorLi, Wei
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.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.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(1):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(1),99-111.
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 413.1(2019):99-111.
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