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南极长城站附近企鹅栖息地粪土沉积地层放射性核素210Pb定年

王自磐,  刘广山,  卢冰,  张卫国,  韩晓菲

文章导航 > 海洋学报  > 2006 >  28(5): 76-82
王自磐, 刘广山, 卢冰, 张卫国, 韩晓菲. 南极长城站附近企鹅栖息地粪土沉积地层放射性核素210Pb定年[J]. 海洋学报, 2006, 28(5): 76-82.
引用本文: 王自磐, 刘广山, 卢冰, 张卫国, 韩晓菲. 南极长城站附近企鹅栖息地粪土沉积地层放射性核素210Pb定年[J]. 海洋学报, 2006, 28(5): 76-82.
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WANG Zi-pan, LIU Guang-shan, LU Bing, ZHANG Wei-guo, HAN Xiao-fei. The natural radionuclides and 210Pb dating for stratigraphic in sea birds dropping amended soil from it near the Great Wall Station West Antarctica[J]. Haiyang Xuebao, 2006, 28(5): 76-82.
Citation: WANG Zi-pan, LIU Guang-shan, LU Bing, ZHANG Wei-guo, HAN Xiao-fei. The natural radionuclides and 210Pb dating for stratigraphic in sea birds dropping amended soil from it near the Great Wall Station West Antarctica[J]. Haiyang Xuebao, 2006, 28(5): 76-82.
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南极长城站附近企鹅栖息地粪土沉积地层放射性核素210Pb定年

  • 1.

    国家海洋局, 海洋生态系统和生物地球化学重点实验室, 浙江, 杭州, 310012

  • 2.

    厦门大学, 海洋系, 福建, 厦门, 361005

  • 3.

    华东师范大学, 河口海岸动力沉积和动力地貌综合国家重点实验室, 上海, 201100

基金项目: 国家自然科学基金资助项目资助(40576003;40276037)

The natural radionuclides and 210Pb dating for stratigraphic in sea birds dropping amended soil from it near the Great Wall Station West Antarctica

  • 1.

    Key Laboratory of Marine Ecosystem and Biogeochemistry, State Oceunic Administration, Hangzhou 310012, China

  • 2.

    Department of Oceanography, Xiamen University, Xiamen 361005, China

  • 3.

    State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China

    摘要
  • 摘要: 用γ谱方法测定了南极长城站附近特有生物群落栖息地沉积物中放射性核素含量,地表沉积物中40K,137Cs,210Pb,226Ra,228Ra,228Th.和238U平均比活度,分别为143,7.56,24.1,3.65,5.36,4.15和6.5Bq/kg.同时测试了阿德雷岛企鹅栖息地粪土沉积地层中放射性核素含量,利用其中的210Pb比活度,210Pbex垂向变化特征,推演沉积物的沉积速率和地质历史年代:其中AD1-a柱样时间跨度约为74a(1928~2002年),据此计算了沉积速率为0.063mm/a(r=0.794),并讨论了在南极特定条件下,放射性核素示踪对定年影响以及与区域现代气候环境变化的内在联系.
    Abstract: Radioo nuclides in the surface sediments in special biological population dropping amended soil collecing from Antarctica have been measured with spectrometer.The average contents of 40K,137Cs,210Pb,226Ra,228Ra,228Th and 238U are 143, 7.56, 24.1, 3.65, 5.36, 4.15 and 6.5 Bq/kg.The specific activity of 210Pb for the core samples in sea birds dropping amended soil,respectively from Ardley Island, have been measured.A ccording to the profiles of 210Pb specific activity, we used CRS model to date the core samples.Which spans about 74 a(1928~2002).Base on the dating, we estimateth evelocity of deposition.Effece of the naturalr adionuclides treca on dating,relations between storage method of radionuclides and regional climate anomaly variation, and of under the construction of Antarctica have been distributed.
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  • 收稿日期:  2005-08-20
  • 修回日期:  2006-03-28

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