Three dimensional seismic studies of deep-water hazard-related features on the northern slope of South China Sea
Chen, Duanxin1,2; Wang, Xiujuan1,2; Voelker, David3; Wu, Shiguo4; Wang, Lei5; Li, Wei6; Li, Qingping7; Zhu, Zhenyu7; Li, Cuilin1,2; Qin, Zhiliang8; Sun, Qiliang9
2016-11-01
发表期刊MARINE AND PETROLEUM GEOLOGY
卷号77页码:1125-1139
摘要Mass transport deposits and geological features related to fluid flow such as gas chimneys, mud diapirs and volcanos, pockmarks and gas hydrates are pervasive on the canyon dominated northern slope of the Pearl River Mouth basin of the South China Sea. These deposits and structures are linked to serious geohazards and are considered risk factors for seabed installations. Based on high resolution three dimensional seismic surveys, seismic characteristics, distributions and origins of these features are analyzed. A distribution map is presented and geometrical parameters and spatial distribution patterns are summarized. Results show that various groups of the mapped features are closely tied to local or regional tectonism and sedimentary processes. Mass transport complexes are classified as slides near the shelf break, initially deformed slumps on the flanks of canyons and highly deformed slumps on the lower slope downslope of the mouth of canyons. We propose them to be preconditioned by pore pressure changes related to sea level fluctuations, steep topography, and fluid and fault activities. Gas chimneys are mainly located in the vicinity of gas reservoirs, while bottom-simulating reflectors are observed within the gas chimney regions, suggesting gas chimneys serve as conduits for thermogenic gas. Mud diapirs/volcanos and pockmarks are observed in small numbers and the formation of pockmarks is related to underlying gas chimneys and faults. This study aims at reducing risks for deep-water engineering on the northern slope of South China Sea. (C) 2016 Elsevier Ltd. All rights reserved.
文章类型Article
关键词Deep-water Hazard-related Features Mass Transport Complexes Fluid Flow Gas Hydrate Gas Chimney Mud Volcano Pockmark South China Sea
WOS标题词Science & Technology ; Physical Sciences
DOI10.1016/j.marpetgeo.2016.08.012
收录类别SCI
语种英语
关键词[WOS]PEARL RIVER MOUTH ; SUBMARINE LANDSLIDE COMPLEX ; GAS HYDRATE OCCURRENCE ; FOCUSED FLUID-FLOW ; CONTINENTAL-SLOPE ; STOREGGA SLIDE ; MEDITERRANEAN SEA ; OFFSHORE NORWAY ; CANYON SYSTEM ; SHENHU AREA
WOS类目Geosciences, Multidisciplinary
WOS记录号WOS:000384861400071
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.idsse.ac.cn/handle/183446/1653
专题深海科学研究部_深海地球物理与资源研究室
作者单位1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266071, Peoples R China
3.Univ Bremen, Marum Ctr Marine Environm Sci, D-28359 Bremen, Germany
4.Chinese Acad Sci, Sanya Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China
5.Minist Land & Resources, Qingdao Inst Marine Geol, Key Lab Marine Hydrocarbon Resources & Environm G, Qingdao 266071, Peoples R China
6.Univ Kiel, Inst Geosci, D-24118 Kiel, Germany
7.China Natl Offshore Oil Corp, Beijing Res Ctr, Beijing 100027, Peoples R China
8.MOT, Tianjin Res Inst Water Transport Engn, Tianjin 300456, Peoples R China
9.China Univ Geosci, Fac Earth Resources, Wuhan 430074, Peoples R China
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Chen, Duanxin,Wang, Xiujuan,Voelker, David,et al. Three dimensional seismic studies of deep-water hazard-related features on the northern slope of South China Sea[J]. MARINE AND PETROLEUM GEOLOGY,2016,77:1125-1139.
APA Chen, Duanxin.,Wang, Xiujuan.,Voelker, David.,Wu, Shiguo.,Wang, Lei.,...&Sun, Qiliang.(2016).Three dimensional seismic studies of deep-water hazard-related features on the northern slope of South China Sea.MARINE AND PETROLEUM GEOLOGY,77,1125-1139.
MLA Chen, Duanxin,et al."Three dimensional seismic studies of deep-water hazard-related features on the northern slope of South China Sea".MARINE AND PETROLEUM GEOLOGY 77(2016):1125-1139.
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