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学科主题: Environmental Sciences; Geography, Physical; Geosciences, Multidisciplinary
题名: Sedimentary records of water environment in lake Chaohu in the Yangtze delta region, China
作者: Du, L.1; Yi, C. L.1; Pan, S. M.1; Xie, P.2
通讯作者: Du, L, Nanjing Univ, Dept Geog, Key Lab Coast & Isl Dev, Nanjing 210093, Peoples R China
关键词: grain-size parameters ; (137)Cs dating ; sedimentation rate ; sedimentary environment ; Chaohu lake
刊名: JOURNAL OF COASTAL RESEARCH
发表日期: 2006-12-01
卷: 1, 页:242-245
收录类别: SCI
文章类型: Article
部门归属: Nanjing Univ, Dept Geog, Key Lab Coast & Isl Dev, Nanjing 210093, Peoples R China; Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghua Expt Stn Lake Ecosyst, Wuhan, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]: Environmental Sciences ; Geography, Physical ; Geosciences, Multidisciplinary
研究领域[WOS]: Environmental Sciences & Ecology ; Physical Geography ; Geology
摘要: Three lacustrine core samples were collected from Chaohu lake in December 2002 in the Yangtze delta region. The grain sizes were analyzed using a Laser Analyzer to obtain grain-size parameters. Sediment geochronology was determined in radioisotopes Cs-137 and the average sedimentary rates are 0.29cm.a(-1), 0.35 cm.a(-1) and 0.24cm-a(-1) in Cores C 1, C2 and C3, respectively. The grain-size parameters of the deposits vary regularly with the fluctuation of hydrodynamics. From 1950s to the beginning of 20th century, coarse-grained sediment was deposited, suggesting strong hydraulic conditions and high water-level periods with much precipitation; from the start of 20(th) century to latter half of 18(th) century, fine-grained sediment was deposited, indicating that weak hydraulic conditions and low water-level periods with less precipitation; before the first half of 18(th) century, coarse-grained sediment was deposited, suggesting great velocity of flow and high water-level periods of more precipitation.
英文摘要: Three lacustrine core samples were collected from Chaohu lake in December 2002 in the Yangtze delta region. The grain sizes were analyzed using a Laser Analyzer to obtain grain-size parameters. Sediment geochronology was determined in radioisotopes (137)Cs and the average sedimentary rates are 0.29cm.a(-1), 0.35 cm.a(-1) and 0.24cm-a(-1) in Cores C 1, C2 and C3, respectively. The grain-size parameters of the deposits vary regularly with the fluctuation of hydrodynamics. From 1950s to the beginning of 20th century, coarse-grained sediment was deposited, suggesting strong hydraulic conditions and high water-level periods with much precipitation; from the start of 20(th) century to latter half of 18(th) century, fine-grained sediment was deposited, indicating that weak hydraulic conditions and low water-level periods with less precipitation; before the first half of 18(th) century, coarse-grained sediment was deposited, suggesting great velocity of flow and high water-level periods of more precipitation.
语种: 英语
WOS记录号: WOS:000202961300045
ISSN号: 0749-0208
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/8754
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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作者单位: 1.Nanjing Univ, Dept Geog, Key Lab Coast & Isl Dev, Nanjing 210093, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghua Expt Stn Lake Ecosyst, Wuhan, Peoples R China

Recommended Citation:
Du, L.; Yi, C. L.; Pan, S. M.; Xie, P..Sedimentary records of water environment in lake Chaohu in the Yangtze delta region, China,JOURNAL OF COASTAL RESEARCH,2006,1():242-245
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