Spatial and temporal variations and controlling factors of sediment accumulation in the Yangtze River estuary and its adjacent sea area in the Holocene, especially in the Early Holocene

doi:10.1016/j.csr.2016.06.007

CORC > 自然资源部第一海洋研究所 > 自然资源部第一海洋研究所 > 业务部门 > 海洋地质与地球物理研究室

	Spatial and temporal variations and controlling factors of sediment accumulation in the Yangtze River estuary and its adjacent sea area in the Holocene, especially in the Early Holocene
	Feng, Zhibing 1,2; Liu, Baohua 2; Zhao, Yuexia 2; Li, Xishuang 3; Jiang, Li 1; Si, Shaokun 2
刊名	CONTINENTAL SHELF RESEARCH
	2016-08-15
卷号	125 页码:1-17
关键词	Yangtze River estuary East China Sea Depositional system Sedimentation rate Paleo- coastline
ISSN号	0278-4343
DOI	10.1016/j.csr.2016.06.007
英文摘要	The sub-bottom and collected borehole data provide insight into the transport and accumulation processes of the Yangtze-derived sediment in the study area since similar to 11 kyr BP. Five seismic units were identified according to six major acoustic surfaces. The sedimentary strata consist of fluvial, estuarine and deltaic systems from the bottom up, characterized by two different trends in sediment accumulation rates, i.e., low-high-low, and high-low-high. On the inner shelf of the East China Sea, the terrain with trough and ridge was formed by the Early Holocene transgression strata (formed in similar to 10 to 12 kyr BP) scoured by the later rectilinear tidal current due to postglacial sea-level transgression, and the sharply protruding seismic units are interpreted to be bedrocks outcropping on the seafloor. An analysis of the sedimentary characteristics in the boreholes and such factors as difference in accumulation rates, and tectonic subsidence led us to conclude that the paleo-coastline was located not far away from and to the east of Core ZK09 at similar to 9 kyr BP, and the southern bank of the Yangtze River estuary was located to the south of Core ZK09. At similar to 9 kyr BP, the Yangtze-derived sediments were transported eastwards along the southern bank of the Yangtze River and the barrier due to the influence of the paleo-coastal current from the north, the direction of the Yangtze-derived sediment transport was split on the northeast of the Zhoushan archipelago, and the sediments covered the terrain with trough and ridge. During the high sea level period (7 kyr BP-present), the eastward migration of paleo-coastline had resulted in the increase in accumulation rate. We also conclude that the sharp increase in accumulation rate near the Yangtze River estuary after 2 kyr BP was not primarily caused by human activities. The position shifts of the estuary caused by the paleo-coastline migration and sea level oscillations since the Holocene is the main cause controlling the Yangtze-derived sediment distribution, and the difference in accumulation rate at different locations in the study area. (C) 2016 Elsevier Ltd. All rights reserved.
资助项目	Project of State Oceanic Administration, China[908-01-BC15]
WOS研究方向	Oceanography
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000382413900001
内容类型	期刊论文
源URL	[http://ir.fio.com.cn/handle/2SI8HI0U/3373]
专题	业务部门_海洋地质与地球物理研究室
作者单位	1.Ocean Univ China, Coll Marine Geosci, Qingdao, Peoples R China; 2.State Ocean Adm, Natl Deep Sea Ctr, 1 Weiyang Rd,Aoshanwei St, Qingdao 266061, Peoples R China; 3.State Ocean Adm, Inst Oceanog 1, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Feng, Zhibing,Liu, Baohua,Zhao, Yuexia,et al. Spatial and temporal variations and controlling factors of sediment accumulation in the Yangtze River estuary and its adjacent sea area in the Holocene, especially in the Early Holocene[J]. CONTINENTAL SHELF RESEARCH,2016,125:1-17.
APA	Feng, Zhibing,Liu, Baohua,Zhao, Yuexia,Li, Xishuang,Jiang, Li,&Si, Shaokun.(2016).Spatial and temporal variations and controlling factors of sediment accumulation in the Yangtze River estuary and its adjacent sea area in the Holocene, especially in the Early Holocene.CONTINENTAL SHELF RESEARCH,125,1-17.
MLA	Feng, Zhibing,et al."Spatial and temporal variations and controlling factors of sediment accumulation in the Yangtze River estuary and its adjacent sea area in the Holocene, especially in the Early Holocene".CONTINENTAL SHELF RESEARCH 125(2016):1-17.