长江口水边线和潮沟遥感信息提取分析

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1、上海海洋大学硕士学位论文●TheStudyonWatersideLineandTidalChannelRemote●SensingInformationExtractionintheYangtzeRiverEstuaryABSTRACTTheYangtzeRiverEstuaryis10catedintheChineseeasterncoast,sincethefollowingXuliujing，theestuaryisdividedintothesouthbranchandnorthbranchbyChongmingisland，thensouthbranch

2、isdividedintosouthportandnorthportbyCllangxingislandnearWusongEstuary,thesouthportisdividedintothesouthpassageandthenorthpassagebyJiuduansha．Sothereformed”threeforks．fourestuary”．TheYangtzeRiverestuary,withitsownrichnaturalrcsourcesandkeylocation，turnedintoanimportantregionofinternati

3、onalcompetitionandeconomicdevelopment．TidalfiatisakindofsiltycoastalwetlandsbetweenthellighwatersidelineatspringtideandthelowwaterlineneaptidewhichiseffectedregularlybytidalactiomItisadynamicandunstablelandandwaterresources，itisalsoallimportantobjectofresourcesandenvironmentinthecoast

4、alzone．Ithasuniqueecologicalvalueandgreatresourcespotential．Sothestudyonthecharacteranddistributionoftidalflatisveryusefulforrationalexploitationofrcsollrccsintidalflat．Butasasensitiveareaofland-oceaninteractions，thetemporalandspatialvariationofprofleshapesoftidalflatisverycomplex，bec

5、auseoftheinfluencesofwaves，sediment,offshorecurrents，geologyandstormsurges．Watersidelineisoneofimportantcharacteristicparametersofsiltytidalfiatandit'stheinstantborderlinebetweenlandandocean．Tidalchannelisatypicalgeomorphictypeofsiltytidalflat．Itlinkssaltmarshandmudflat。Duringfloodand

6、ebb．thesechannelsactaschannelsofseawater．Tidalchannelscontrolthesedimentationofsaltmarshandmudflatandthefluxofnutrients．ItiSthemainaisleofinassandenergyexchangesbetweentidalflatandocealLByusingwaveletanalysisandimagesegmentationtechniquetoextractthewatersidelineinformationofJiuduansha

7、；ByregiongrowingmethodandⅥ●informationbythewaveletmulti-resolutionanalysismethod．Atlast,weevaluatedtheeffectofthewatersidelineinformationextractionbytheedgeconnectivityevaluationmethod．Theresultsshowthewaveletmulti-resolutionanalysismethodiSoneoftheeffectivemethodstoextractwatersideli

8、neinf