Sediment sources and the flood record from Wanghu lake, in the middle reaches of the Yangtze River

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	Sediment sources and the flood record from Wanghu lake, in the middle reaches of the Yangtze River
	Yi, Chaolu ; Liu, Huifang ; Rose, Neil L.; Yang, Hong ; Ni, Leyi ; Xie, Ping
刊名	JOURNAL OF HYDROLOGY
	2006-10-15
卷号	329 期号:3-4 页码:568-576
关键词	laminated sediments Yangtze river sediment geochemistry flood sources
ISSN号	0022-1694
通讯作者	Yi, CL, Chinese Acad Sci, Inst Tibetan Plateau Res, Shuangqing Rd 18, Beijing 100085, Peoples R China
中文摘要	A sediment core was collected from the centre of Wanghu Lake, in the Middle Reaches of the Yangtze River. The recent part of the core was dated using a combination of Pb-210 and spheroidal carbonaceous particle (SCP) techniques. Extrapolating this chronology dated the laminated section of the core, between 723 and 881 mm, to the first half of the 18th century and this section was selected for detailed study. The thicknesses of the laminae were measured using reflecting and polarizing microscopes whilst geochemistry was determined by an electron probe. The thickness of the dark layers was found to be positively correlated with titanium concentrations, and negatively correlated with aluminium and potassium concentrations. The thickness of the light layers was found to be negatively correlated with the concentrations of titanium. It is concluded that the dark layers were deposited from the Fushui River, a tributary of the Yangtze River, under periods of normal flow whilst the light Layers were mainly deposited from the Yangtze River itself during flood periods. Documentary evidence for floods occurring in the take catchment corresponded with thick laminations of high titanium concentration. Further, two of the three thickest, light laminations with low titanium concentrations were found to be synchronous with recorded flood dates of the main Yangtze River in its Middle Reaches, but one was synchronous with a local drought. These data suggest that the Lake sediment provides an archive of the relative water levels of the Yangtze and Wanghu including floods of both the main Yangtze River and the local hydrological regime. (c) 2006 Elsevier B.V. All rights reserved.
英文摘要	A sediment core was collected from the centre of Wanghu Lake, in the Middle Reaches of the Yangtze River. The recent part of the core was dated using a combination of (210)Pb and spheroidal carbonaceous particle (SCP) techniques. Extrapolating this chronology dated the laminated section of the core, between 723 and 881 mm, to the first half of the 18th century and this section was selected for detailed study. The thicknesses of the laminae were measured using reflecting and polarizing microscopes whilst geochemistry was determined by an electron probe. The thickness of the dark layers was found to be positively correlated with titanium concentrations, and negatively correlated with aluminium and potassium concentrations. The thickness of the light layers was found to be negatively correlated with the concentrations of titanium. It is concluded that the dark layers were deposited from the Fushui River, a tributary of the Yangtze River, under periods of normal flow whilst the light Layers were mainly deposited from the Yangtze River itself during flood periods. Documentary evidence for floods occurring in the take catchment corresponded with thick laminations of high titanium concentration. Further, two of the three thickest, light laminations with low titanium concentrations were found to be synchronous with recorded flood dates of the main Yangtze River in its Middle Reaches, but one was synchronous with a local drought. These data suggest that the Lake sediment provides an archive of the relative water levels of the Yangtze and Wanghu including floods of both the main Yangtze River and the local hydrological regime. (c) 2006 Elsevier B.V. All rights reserved.
学科主题	Engineering, Civil; Geosciences, Multidisciplinary; Water Resources
WOS标题词	Science & Technology ; Technology ; Physical Sciences
类目[WOS]	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
研究领域[WOS]	Engineering ; Geology ; Water Resources
关键词[WOS]	YR RECORD ; AUSTRALIA ; CANADA ; ISLAND ; YIELD
收录类别	SCI
语种	英语
WOS记录号	WOS:000241295200018
公开日期	2010-10-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/152342/8818]
专题	水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文
作者单位	1.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100085, Peoples R China 2.Chinese Acad Sci, Key Lab Cryosphere & Environm, Lanzhou 730000, Peoples R China 3.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China 4.UCL, Environm Change Res Ctr, London WC1H 0AP, England 5.Chinese Acad Sci, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Inst Hydrobiol, Wuhan 430072, Peoples R China
推荐引用方式 GB/T 7714	Yi, Chaolu,Liu, Huifang,Rose, Neil L.,et al. Sediment sources and the flood record from Wanghu lake, in the middle reaches of the Yangtze River[J]. JOURNAL OF HYDROLOGY,2006,329(3-4):568-576.
APA	Yi, Chaolu,Liu, Huifang,Rose, Neil L.,Yang, Hong,Ni, Leyi,&Xie, Ping.(2006).Sediment sources and the flood record from Wanghu lake, in the middle reaches of the Yangtze River.JOURNAL OF HYDROLOGY,329(3-4),568-576.
MLA	Yi, Chaolu,et al."Sediment sources and the flood record from Wanghu lake, in the middle reaches of the Yangtze River".JOURNAL OF HYDROLOGY 329.3-4(2006):568-576.