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《Acta Sedimentologica Sinica》 2009-03
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Sedimentary Features of Sediment and Their Responses to Dynamics in the Flood and Ebb Channel of the Changjiang Estuary

WANG Yong-hong1 SHEN Huan-ting2 LI Jiu-fa2 MAO Zhi-chang2(1.Key Lab of Submarine Geosciences and Technology,Ministry of Education,Ocean University of China,Qingdao Shandong 266100;2.State Key Laboratory of Estuarine & Coastal Research,East China Normal University,Shanghai 200062)  
Flood and ebb channel are the important geomorphologic units and different hydrodynamic properties exist in these channels.Based on the analysis of particle size,clay and heavy mineral and magnetic features of the sediments in the flood and ebb channels of the Changjiang Estuary,it is found that there are different sedimentary features in the flood and ebb channels.Particle sizes of the sediments in the flood channel are coarser than that in the ebb channel.Distribution and concentrations of clay minerals in the flood channel sediment are similar with those in the ebb channel due to the dual-direction currents.Concentration of heavy minerals in the ebb channel is higher than that in the flood channel because there is strong ebb tide current and similarly there are more ferrimagnetic mineral in the ebb channel.
【Fund】: 国家自然科学基金重点项目(批准号:40334038);; 国家自然科学基金(批准号:40572077);; “973”项目(编号:2005CB4022304)的联合资助
【CateGory Index】: TV148.1
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