J4 ›› 2009, Vol. 39 ›› Issue (3): 470-473.

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Vertical Distribution of 137Cs and 210Pb and Sedimentation Rate in Songhua Lake

HAO Li-bo1, LIU Hai-yang1,LU Ji-long1, SUN Shu-mei2, PAN Zhi-heng2|ZHAO Yu-yan1   

  1. 1.College of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, China;2.Jilin Geological Survey Institute, Changchun 130061, China
  • Received:2008-12-16 Online:2009-05-26 Published:2009-05-26

Abstract:

Three distinct 137Cs peaks formed at 1964, 1971 and 1975, respectively. are recognized in the sediment core of Songhua Lake. Using 137Cs depths recorded in 1964 and 1975 as the datum levels, the sedimentation rate are calculated to be 0.86 cm/a and 0.71 cm/a, respectively. The average sedimentation rate is 0.71 cm/a calculated by CIC model of 210Pb dating, which showed a good agreement with the result calculated by the 137Cs. The sedimentation rate from 1964 to 1975 is higher than those from 1975 to 2006 in Songhua Lake.  The combination of 137Cs and 210Pb dating is meaningful in improving the estimating accuracy of the sedimentation rates.

Key words: 210Pb, 137Cs, sedimentation dating, Songhua Lake

CLC Number: 

  • X141
[1] Chai Sheli, Gao Lina, Qiu Dianming, Chai Yuan, Guo Jia, Xu Xuechun. 210Pb and 137Cs Dating of the Sediment Core and  Its Recent Accumulation Rates in Yueliang Lake in West Jilin Province [J]. Journal of Jilin University(Earth Science Edition), 2013, 43(1): 134-141.
[2] YOU Hai-tao, LIU Qiang, LIU Jia-qi, CHU Guo-qiang, HAN Jing-tai. A Comparative Study on Model Sedimentation Rates with Varve Dating,137Cs and 210Pb Dating in Erlongwan Maar Lake, NE China [J]. J4, 2007, 37(1): 59-0064.
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