| SEDIMENT TRANSPORT IN YALU RIVER ESTUARY |
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| 作者姓名： | GAOJian-hua GAOShu CHENGYan DONGLi-xian ZHANGJing |
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| 作者单位： | [1]MinistryofEducationKeyLaboratoryforCoastandlslandDevelopment,NanjingUniversity,Nanjing210093,P.R.China [2]DepartmentofEnvironmentandEcology,DandongNormalSchool,Dandong118003,P.R.China [3]SecondInstituteofOceanography,StateOceanicAdministration,Hangzhou310012,P.R.China [4]CollegeofChemistryandChemicalEngineering,OceanUniversityofQingdao,Qingdao266003,P.R.China |
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| 基金项目： | theNationalNaturalScienceFoundationofChina(No.49376278)andanOutstandingYoungSci-entist'sGrant(No.49725612). |
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| 摘 要： | Tidal cycle measurements of tidal currents, salinity and water temperature, and suspended sediment concentra-tions were measured at four stations, together with surveys along two profdes short core collection within the Yalu River estuary.Grain size analysis of the three core sed~ment showed that: 1 ) the sediment from B1 to B3 became finer, worse sorting andpositively skewed; 2) the diversification of matter origin became more and more evident from east to west; 3) the sedimenta overthe region were of the same origin, as indicated by their similar colors and grain sizes. The data indicated that stratification occurred in the flood season, from upstream to downstream, and a salt wedge was formed. The water column was well mixed, butthe longitudinal gradient of the salinity was larger on spring tide. The resulta also showed that the dominating mechanism ofsuspended sediment transport in the Yalu River estuary was T1, T2, T3 and T5. The non-tidal steady advection transport wasrestricted by the net transport of suspended sediment induced by mass Stoked drift directed to landwards, then the net sedimenttransport rate were decreased and the turbidity maxima was also favored to forming and extending.
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| 关 键 词： | 鸭绿江 河口 粒度 水土保持 泥砂运动 悬浮 沉降 |
| 收稿时间： | 21 October 2002 |
Sediment transport in Yalu River estuary |
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| GAOJian-hua GAOShu CHENGYan DONGLi-xian ZHANGJing.SEDIMENT TRANSPORT IN YALU RIVER ESTUARY[J].Chinese Geographical Science,2003,13(2):157-163. |
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| Authors: | Gao Jian-hua Gao Shu Cheng Yan Dong Li-xian Zhang Jing |
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| Institution: | (1) Ministry of Education Key Laboratory for Coast and Island Development, Nanjing University, 210093 Nanjing, P. R. China;(2) Department of Environment and Ecology, Dandong Normal School, 118003 Dandong, P. R. China;(3) Second Institute of Oceanography, State Oceanic Administration, 310012 Hangzhou, P. R. China;(4) College of Chemistry and Chemical Engineering, Ocean University of Qingdao, 266003 Qingdao, P. R. China |
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| Abstract: | Tidal cycle measurements of tidal currents, salinity and water tempe rature, and suspended sediment concentrations were measured at four stations, to gether with surveys along two profiles short core collection within the Yalu Riv er estuary. Grain size analysis of the three core sediment showed that: 1) the s ediment from B1 to B3 became finer, worse sorting and positively skewed; 2) the diversification of matter origin became more and more evident from east to west; 3) the sediments over the region were of the same origin, as indicated by their similar colors and grain sizes. The data indicated that stratification occurred in the flood season, from upstream to downstream, and a salt wedge was formed. The water column was well mixed, but the longitudinal gradient of the salinity w as larger on spring tide. The results also showed that the dominating mechanism of suspended sediment transport in the Yalu River estuary was T1, T2, T3 and T5. The non-tidal steady advection transport was restricted by the net transport o f suspended sediment induced by mass Stoked drift directed to landwards, then th e net sediment transport rate were decreased and the turbidity maxima was also f avored to forming and extending. |
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| Keywords: | grain size suspended sediment transport turbidity maximum the Ya lu River estuary |
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