美国大学生数学建模竞赛优秀论文

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1、Team#7018Page37of37ForofficeuseonlyT1________________T2________________T3________________T4________________TeamControlNumber7018 ProblemChosencForofficeuseonlyF1________________F2________________F3________________F4________________SummaryThearticleisaimedtoresearchthepotentialimpactofthemarinegar

2、bagedebrisonmarineecosystemandhumanbeings，andhowwecandealwiththesubstantialproblemscausedbytheaggregationofmarinewastes.Intaskone，wegiveadefinitionofthepotentiallong-termandshort-termimpactofmarineplasticgarbage.Regardthetoxinconcentrationeffectcausedbymarinegarbageaslong-termimpactandtotrackandm

3、onitorit.Weetablishthecompositeindicatormodelondensityofplastictoxin，andthecontentoftoxinabsorbedbyplasticfragmentintheoceantoexpresstheimpactofmarinegarbageonecosystem.TakeJapanseaasexampletoexamineourmodel.Inasktwo,wedesigneanalgorithm,usingthedensityvalueofmarineplasticofeachyearindiscretemeas

4、urepointgivenbyreference，andweplotplasticdensityofthewholeareainvarieslocations.Basedonthechangesinmarineplasticdensityindifferentyears，wedeterminegenerallythatthecenteroftheplasticvortexisEast—West140°W—150°W,South—North30°N—40°N.Accordingtoouralgorithm,wecanmonitoraseaareareasonablyonlybyregula

5、robservationofpartofthespecifiedmeasuringpointIntaskthree，weclassifytheplasticintothreetypes，whichissurfacelayerplastic，deeplayerplasticandinterlayerbetweenthetwo.Thenweanalysisthethedegradationmechanismofplasticineachlayer.Finally，wegetthereasonwhythoseplasticfragmentscometoasimilarsize.Intaskfo

6、ur，weclassifythesourceofthemarineplasticintothreetypes，thelandaccountingfor80%，fishinggearsaccountingfor10%，boatingaccountingfor10%，andestimatetheoptimizationmodelaccordingtotheduel-targetprincipleofemissionsreductionandmanagement.Finally,wearriveatamorereasonableoptimizationstrategy.Intaskfive，w

7、efirstanalyzethemechanismoftheformationofthePacificoceantrashvortex，andthusconcludethatthemarinegarbageswirlwillalsoemergeinsouthPacific，southAtlanticandtheIndiaocean.AccordingtotheConcentrationofdiffusiontheory,weesta