The 137Cs distribution in sediment profiles from the Yangtze River estuary: a comparison of modeling and experimental results

S. Pan; Y. Xu; A. Wang; P. Povinec

doi:10.1007/s10967-011-1605-x

Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 292: Issue 3

The ¹³⁷Cs distribution in sediment profiles from the Yangtze River estuary: a comparison of modeling and experimental results

Authors:

S. Pan

S. Pan MOE Key Laboratory of Coastal and Island Development, Nanjing University, Nanjing, 210093 China

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Y. Xu

Y. Xu MOE Key Laboratory of Coastal and Island Development, Nanjing University, Nanjing, 210093 China

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A. Wang

A. Wang MOE Key Laboratory of Coastal and Island Development, Nanjing University, Nanjing, 210093 China

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, and

P. Povinec

P. Povinec Department of Nuclear Physics and Biophysics, Comenius University, Mlynska dolina F-1, 84248 Bratislava, Slovakia

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Pages:: 1207–1214

Online Publication Date:: 04 Jan 2012

Publication Date:: 01 Jun 2012

Article Category:: Research Article

DOI:: https://doi.org/10.1007/s10967-011-1605-x

Keywords:: Sediment core; Sedimentation rate; Sedimentation model; 137Cs dating; Yangtze River estuary; China

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Abstract

It has been generally accepted when estimating sedimentation rates using the ¹³⁷Cs dating method that the position of the ¹³⁷Cs maximum in a sediment profile represents the year 1963. In this paper we validated this approach by developing a model in which the annual ¹³⁷Cs global fallout flux for the Yangtze River estuary was established on the basis of the Tokyo flux corrected for precipitation rates observed in Shanghai. As the ¹³⁷Cs maxima in the sediment deposition profiles depend on the sedimentation rates, the sub-sampling intervals were calculated accordingly. Higher measured than the calculated values were found in some cores, what may be due to fluctuating sedimentation rates and an additional deposition of ¹³⁷Cs from land-based sources. The study provides useful information on the reliability of the measured ¹³⁷Cs maxima in sediment profiles frequently used for dating of sediments in marine (coastal regions, open seas) as well as in terrestrial (lakes) environments.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)