Littoral landforms of Lake Hulun and Lake Buir(China and Mongolia):Wind-driven hydro-sedimentary dynamics and resulting clastics distribution  

作　　者：Li Wang Mathieu Schuster Shi-Wei Xin Florin Zainescu Xin-Yu Xue Joep Storms Jan-Hendrik May Alexis Nutz Helena van der Vegt Guilherme Bozetti Zai-Xing Jiang 

机构地区：[1]School of Energy Resources,China University of Geosciences(Beijing),Beijing,100083,China [2]Universite de Strasbourg,CNRS,ENGEES,Institut Terre et Environnement de Strasbourg,UMR 7063,5 Rue Descartes,Strasbourg,France [3]Tamsag Mongolia(XIX)Ltd.,PetroChina,Daqing 163000,China [4]CEREGE,Aix-Marseille Université,CNES,IRD,College de France,INRA,Aix en Provence,France [5]School of Marine Science,Sun Yat-sen University,Zhuhai 519083,China [6]Delft University of Technology,Department of Geoscience and Engineering,Delf,the Netherlands [7]School of Geography,Earth and Atmospheric Sciences,University of Melbourne,253 Elgin St.,Carlton,VIC 3053,Australia [8]Deltares,Delf,the Netherlands [9]SCMF,Faculty of Geography,University of Bucharest,1 N.Balcescu Blv.,Bucharest,Romania

出　　处：《Journal of Palaeogeography》2024年第2期309-326,共18页古地理学报（英文版）

基　　金：supported by the National Science and Technology Special Project(No.2017ZX05009-002);the Fundamental Research Funds for the Central Universities;supported by CNES through the funding of his postdoctoral fellowship。

摘　　要：Two rectangular-shaped lakes,Lake Hulun and Lake Buir,located at the boundary between China and Mongolia,only c.75 km apart and therefore experiencing similar wind fields,have been studied based on satellite images and field surveys in order to compare their geomorphological and sedimentological characteristics.The wind-driven hydrodynamics,which have a significant effect on the development of littoral landforms and on sediment distribution,have been discussed for the two similar lakes that experienced a prevailing wind perpendicular to their long axis.A conceptual model related to wind-driven water bodies and sediment distribution is proposed.Wave-influenced to wave-dominated deltas,beaches,spits,and eolian dune deposits develop around these two lakes,with a strikingly similar distribution pattern.These features locally inform the longshore drift and help reconstruct the water circulation induced by wind forcing.Under the NW prevailing wind regime,the spits developed on the SW coast with a NW—SE extension,which was influenced by the NW—SE longshore currents.The same influence was observed in the delta extension in the NE area.The differences lie in the presence of fan deltas in the NW region of Lake Hulun,but not in Lake Buir.Additionally,the width of the beach and eolian deposits on the downwind coast of Lake Hulun is three times greater than that of Lake Buir which were caused by the differences in sediment supply and wind fetch between the two lakes.Lake Hulun and Lake Buir provide two reliable examples to understand the relationship among the wind field,provenance,hydrodynamics,landforms,and asymmetrical distribution of clastics in elongated lakes.They also represent relevant modern analogs,which may also be of guiding significance to wind-driven sand body prediction in lacustrine basins.

关 键 词：Wind-driven lakes FETCH Sedimentary facies Hydrodynamics Geomorphology Spits Shoreline Lake Hulun Lake Buir 

分 类 号：P931[天文地球—自然地理学]