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基于时空双变网格的起伏地表变坐标系正演模拟方法(英文) Abstract Inthefieldofgeophysicsandexplorationgeology,itisessentialtohavepreciseandaccuratemodelingtechniquesforsimulatingthebehaviorandpropertiesofthesubsurfaceenvironment.Oneimportantaspectofthismodelingprocessisthesimulationofthesurfacetopographyanditseffectonthesubsurfaceproperties.Inthispaper,wepresentanewmethodforsimulatingthebehaviorofthesubsurfaceenvironmentbasedonthetime-spacedual-gridandsurfaceundulationcoordinatesystem.Themethodprovidesanaccurateandefficientwayofmodelingthemovementoffluidsandothermaterialsthroughthesubsurfaceenvironment,takingintoaccounttheeffectsofsurfaceundulations. Introduction Simulationofthebehaviorandpropertiesofthesubsurfaceenvironmentisanessentialaspectofgeophysicsandexplorationgeology.Itinvolvescomplexphysicalprocessesandrequiresaccurateandefficientmodelingtechniques.Oneimportantfactoraffectingthebehaviorofthesubsurfaceenvironmentisthesurfacetopography.Whenmodelingthesubsurface,itisnecessarytoincludetheeffectofsurfacefeaturessuchashills,valleys,andridges.Thisisimportantforpredictingthebehavioroffluidsandothermaterialsmovingthroughthesubsurfaceenvironment. Traditionally,subsurfacemodelinghasbeenperformedusingauniformCartesiancoordinatesystem,whichsimplifiesthemodelingprocessbutmaynotaccuratelyrepresentthetruebehaviorofthesubsurfaceenvironment.Thisisbecausesurfacetopographyisnottakenintoaccount,andtheuniformgridmaynotbeabletocapturethefinedetailsofthesubsurfaceenvironment. Toovercometheselimitations,anewmethodofmodelingthesubsurfaceenvironmentisproposedbasedonthetime-spacedual-gridandsurfaceundulationcoordinatesystem.Theproposedmethodtakesintoaccounttheeffectsofsurfaceundulationsandprovidesanaccuraterepresentationofthesubsurfaceenvironment.Thispaperpresentsthedetailsoftheproposedmethodanditsapplication. Methodology Theproposedmethodusesatime-spacedual-grid,wherethetimegridrepresentsthetemporalevolutionofthesubsurfaceenvironment,whilethespacegridrepresentsthespatialdistributionofpropertiesandfeatures.Theti