Slope-confined submarine canyons in the Baiyun deep-water area, northern South China Sea: variation in their modern morphology

doi:10.1007/s11001-016-9269-0

	Slope-confined submarine canyons in the Baiyun deep-water area, northern South China Sea: variation in their modern morphology
	Li, X. S.1,2; Zhou, Q. J.1; Su, T. Y.1; Liu, L. J.1,2; Gao, S.1; Zhou, S. W.3
刊名	MARINE GEOPHYSICAL RESEARCH
	2016-06
卷号	37 期号:2 页码:95-112
关键词	Submarine canyon Morphology Submerged reefs Undulated structure North of South China Sea
ISSN号	0025-3235
DOI	10.1007/s11001-016-9269-0
英文摘要	On the basis of newly collected multibeam bathymetric data, chirp profiles and existing seismic data, we presented a detailed morphological interpretation of a series of slope-confined canyons in water depths of 300-2000 m in the Baiyun deep-water area, northern margin of the South China Sea. Although these canyons are commonly characterized by regular spacing and a straight-line shape, they vary in their lengths, starting and ending water depths, canyon relief, slope gradients, wall slope gradients and depth profiles along the axis. The eastern canyons (C1-C8) have complex surface features, low values in their slope gradient, canyon relief and wall slope gradient and high values in their length and starting and ending depth contrasting to the western ones (C9-C17). From the bathymetric data and chirp profiles, we interpret two main processes that have controlled the morphology and evolution of the canyons: axial incision and landsliding. The western part of the shelf margin where there were at least four stages of submerged reefs differs from the eastern part of the shelf margin where sedimentary undulations occurred at a water depth of similar to 650 m. We consider that the variation in morphology of submarine canyons in the study area is the result of multiple causes, with the leading cause being the difference in stability of the upper slope which is related to the submerged reefs and sedimentary undulations.
资助项目	National Science and Technology Major Project[2011ZX05056-001-02]
WOS关键词	NORTHWESTERN MEDITERRANEAN SEA ; CASCADIA ACCRETIONARY COMPLEX ; ATLANTIC CONTINENTAL-SLOPE ; RIVER MOUTH BASIN ; SEDIMENT WAVES ; TURBIDITY CURRENTS ; IBERIAN MARGIN ; HUMBOLDT SLIDE ; ROCKALL TROUGH ; NE ATLANTIC
WOS研究方向	Geochemistry & Geophysics ; Oceanography
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000377921100002
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/26435]
专题	自然资源部第一海洋研究所
通讯作者	Li, X. S.
作者单位	1.State Ocean Adm, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, 6 Xianxialing Rd, Qingdao 266061, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao, Peoples R China 3.Survey Ctr China Oilfield Serv Ltd, Tianjin, Peoples R China
推荐引用方式 GB/T 7714	Li, X. S.,Zhou, Q. J.,Su, T. Y.,et al. Slope-confined submarine canyons in the Baiyun deep-water area, northern South China Sea: variation in their modern morphology[J]. MARINE GEOPHYSICAL RESEARCH,2016,37(2):95-112.
APA	Li, X. S.,Zhou, Q. J.,Su, T. Y.,Liu, L. J.,Gao, S.,&Zhou, S. W..(2016).Slope-confined submarine canyons in the Baiyun deep-water area, northern South China Sea: variation in their modern morphology.MARINE GEOPHYSICAL RESEARCH,37(2),95-112.
MLA	Li, X. S.,et al."Slope-confined submarine canyons in the Baiyun deep-water area, northern South China Sea: variation in their modern morphology".MARINE GEOPHYSICAL RESEARCH 37.2(2016):95-112.