基于DEM技術(shù)的黃河口攔門沙分析
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摘 要:為了解近年來黃河口攔門沙發(fā)育情況,利用2017—2019年該區(qū)域水下地形數(shù)據(jù),通過GIS建立DEM模型,分析區(qū)域淤積變化情況,發(fā)現(xiàn)黃河口攔門沙向西北和東北方向逐年發(fā)育,近口門處水下地形變化劇烈,來水來沙是形成攔門沙的主要因素。
關(guān)鍵詞:黃河口攔門沙;淤積分析;DEM
中圖分類號(hào):TV148;TV882.1 文獻(xiàn)標(biāo)志碼:A doi:10.3969/j.issn.1000-1379.2022.01.007
引用格式:左婧,高源,徐叢亮.基于DEM技術(shù)的黃河口攔門沙分析[J].人民黃河,2022,44(1):33-36.
AnalysisofSandbaratYellowRiverEstuaryBasedonDEMTechnology
ZUOJing1,GAOYuan1,XUCongliang2
(1.ShandongHydrologyandWaterResourcesBureau,YRCC,Jinan250100,China;
2.InstituteoftheYellowRiverEstuaryandCoastScience,Dongying257000,China)
Abstract:InordertounderstandthedevelopmentofthesandbarattheYellowRiverestuaryinrecentyears,thispaperusedtheunderwater topographicdataoftheareafrom2017to2019tobuildDEMmodelandanalyzetheregionalsedimentationchangesthroughGIS.Itisfound thatthesandbarattheYellowRivermouthdevelopsyearbyyeartothenorthwestandnortheast,theunderwatertopographyneartheentrance changessharplyandtheincomingwaterandsedimentarethemainfactorsforformingthesandbarattheYellowRiverestuary.
Keywords:sandbaratYellowRiverestuary;siltationanalysis;DEM
黃河口攔門沙是橫亙于黃河入海處的泥沙堆積體[1],它的變化對(duì)黃河口的演變具有較大影響,同時(shí)對(duì)黃河口附近海區(qū)及下游河道的沖淤演變有一定影響。(剩余5714字)