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Sedimentary records of water environment in lake Chaohu in the Yangtze delta region, China
Du, L.1; Yi, C. L.1; Pan, S. M.1; Xie, P.2; Du, L, Nanjing Univ, Dept Geog, Key Lab Coast & Isl Dev, Nanjing 210093, Peoples R China
2006-12-01
Source PublicationJOURNAL OF COASTAL RESEARCH
ISSN0749-0208
Volume1Pages:242-245
AbstractThree 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.; 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.
SubtypeArticle
KeywordGrain-size Parameters (137)Cs Dating Sedimentation Rate Sedimentary Environment Chaohu Lake
DepartmentNanjing 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
Subject AreaEnvironmental Sciences ; Geography, Physical ; Geosciences, Multidisciplinary
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Physical Geography ; Geology
WOS SubjectEnvironmental Sciences ; Geography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000202961300045
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/8754
Collection期刊论文
Corresponding AuthorDu, L, Nanjing Univ, Dept Geog, Key Lab Coast & Isl Dev, Nanjing 210093, Peoples R China
Affiliation1.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
GB/T 7714
Du, L.,Yi, C. L.,Pan, S. M.,et al. Sedimentary records of water environment in lake Chaohu in the Yangtze delta region, China[J]. JOURNAL OF COASTAL RESEARCH,2006,1:242-245.
APA Du, L.,Yi, C. L.,Pan, S. M.,Xie, P.,&Du, L, Nanjing Univ, Dept Geog, Key Lab Coast & Isl Dev, Nanjing 210093, Peoples R China.(2006).Sedimentary records of water environment in lake Chaohu in the Yangtze delta region, China.JOURNAL OF COASTAL RESEARCH,1,242-245.
MLA Du, L.,et al."Sedimentary records of water environment in lake Chaohu in the Yangtze delta region, China".JOURNAL OF COASTAL RESEARCH 1(2006):242-245.
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