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Special Session 2: Changing ocean environment: from the sedimentary perspective -- processes and records |
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Distribution of 210Pb in the sediment of subaqueous Changjiang (Yangtze) Delta and its implications for the sediment dynamics
SS2-08-S
Hui Sheng* , Ministry of Education Key Laboratory for Coast and Island Development,Nanjing University,Nanjing,210023,China.
Jianhua Gao, Ministry of Education Key Laboratory for Coast and Island Development,Nanjing University,Nanjing,210023,China.
Presenter Email: 2448608770@qq.com
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| In order to ascertaining the response of the sediment dynamics of the subaqueous Yangtze Delta to the Changjiang catchment changes, we select 210Pb as the tracer and aim to: (1) study variations in 210Pb fluxes of the Changjiang catchment entering the sea under the impact of human activity (especially the Three Gorges Dam); (2) analyze the 210Pb activity distribution in the sediments of the Changjiang main river and Subaqueous Yangtze Delta - Zhejiang-Fujian Coast Mud Belt; (2) investigate variations in the spatial distribution pattern of 210Pb in the Subaqueous Yangtze Delta - Zhejiang-Fujian Coast Mud Belt under the impact of Changjiang catchment changes; and (3) on the basis of estimating and comparing the 210Pb budget in the Subaqueous Yangtze Delta - Zhejiang-Fujian Coast Mud Belt before and after the impounded of the TGD in 2003, systematically explore the impact of Changjiang catchment changes on the sedimentary environment of the Subaqueous Yangtze Delta - Zhejiang-Fujian Coast Mud Belt. |
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