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Interpreting Cs-137 depth profiles with no single peak in lake deposits in China
Language英语
Xinbao Zhang1,2; Xiubin He1; Yongqing Qi1
2005
Source PublicationSediment Budgets 1
Author of SourceWalling, DE ; Horowitz, AJ
Volume291
Pages78-84
meetingInternational Symposium on Sediment Budgets held at the 7th Scientific Assembly of the International-Association-of-Hydrological-Sciences
Conference DateAPR 03-09, 2005
Conference PlaceFoz do Iguaco
CountryBRAZIL
Publication PlaceWALLINGFORD
PublisherINT ASSOC HYDROLOGICAL SCIENCES
Contribution Rank1
AbstractCs-137 depth profiles lacking the characteristic peak associated with the period of peak fallout in the early 1960s are reported for a number of lakes in China and reasons for their unusual profile shapes are presented. Uniform Cs-137 depth profiles are found in the deposits of most glacial lakes, because the annual Cs-137 inputs since 1963 to the lakes from the glaciers in the catchments via melt runoff are controlled primarily by the velocities of the glaciers, which have changed little over recent decades. Uniform Cs-137 depth profiles are also frequently found in shallow lakes, because the sediment deposits on the lake bottom are prone to human disturbance. The so-called 1974 and 1986 (CS)-C-137 peaks found in the profiles from two lakes in Yunnan Province are not true Cs-137 peaks, but represent "mirror image peaks" caused by the low Cs-137 concentrations associated with sediment deposited in years with low erosive precipitation immediately prior to 1974 and 1986.
Keywordcaesium-137 China depth distribution lake deposits
ISBN978-1-901502-87-9
ISSN0144-7815
Indexed ByEI ; CPCI
Accession numberAccession number:2005179055402
WOS IDWOS:000248922100010
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type会议论文
Identifierhttp://ir.imde.ac.cn/handle/131551/33524
Collection成都山地所知识仓储(2009年以前)
山地表生过程与生态调控重点实验室
Corresponding AuthorXinbao Zhang
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China;
2.State Key Laboratory of Loess and Quaternary Geoglogy, Earth Environment Institute, Chinese Academy of Scienes, Xi'an 710075, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Xinbao Zhang,Xiubin He,Yongqing Qi. Interpreting Cs-137 depth profiles with no single peak in lake deposits in China[C]//Walling, DE, Horowitz, AJ. WALLINGFORD:INT ASSOC HYDROLOGICAL SCIENCES,2005:78-84.
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