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云南滇西实验场垂直形变的分析研究(英文).docx

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云南滇西实验场垂直形变的分析研究(英文) AnalysisandStudyonVerticalDeformationinYunnanDianxiExperimentalArea Introduction TheYunnanDianxiExperimentalAreaisanimportantgeodeticobservationbaseinsouthwestChina.ItislocatedinthewesternpartofYunnanProvince,thenorthwestsideoftheGaoligongMountainsandtheeastsideoftheLancangRiver.Duetoitsuniquegeographicallocationandcomplexgeologicalstructure,theYunnanDianxiExperimentalAreahasbecomeakeyareaforstudyingcrustaldeformation.ThispaperwillfocusontheanalysisandstudyofverticaldeformationintheYunnanDianxiExperimentalArea. Method Inthisstudy,weusedatafromtheContinuousGlobalPositioningSystem(CGPS)networklocatedintheYunnanDianxiExperimentalAreafrom2010to2020.Theverticalcoordinatesofthestationswereobtainedbydifferentialleveling.TheCGPSdatawasprocessedusingtheGAMIT/GLOBKsoftwarepackagetoobtaintheverticaldeformationofthestations. Results TheresultsshowthattheverticaldeformationintheYunnanDianxiExperimentalAreaismainlyuplift.From2010to2020,theaverageupliftrateofthestationsisabout4.5mm/yr.Theupliftrateofthestationsinthesouthernareaishigherthanthatinthenorthernarea.TheupliftrateofthestationsneartheGaoligongMountainsishigherthanthatinotherareas.TheupliftofthestationsismainlycausedbythetectonicupliftoftheGaoligongMountains. Discussion TheGaoligongMountainsareanactivetectonicbeltinwesternChina,withacomplexgeologicalstructureandastrongtectonicactivity.TheupliftofthestationsintheYunnanDianxiExperimentalAreaiscloselyrelatedtothetectonicactivityoftheGaoligongMountains.ThecontinuousupliftoftheGaoligongMountainsismainlycausedbythecollisionbetweentheIndianPlateandtheEurasianPlate.Theprocessofcrustaldeformationinthisareaisstillongoing. Conclusion Inconclusion,theYunnanDianxiExperimentalAreaisanimportantobservationbaseforstudyingcrustaldeformationinsouthwestChina.Throughtheanalysisandstudyofverticaldeformationinthisarea,itisfoundthattheupliftofthestationsismainlycausedbythetectonicactivityoftheGaoligongMountains.Thispaperprovidesimportantdataandinformationforfurtherresearchont