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OALib Journal期刊
ISSN: 2333-9721
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adiabaticdensitysurface,neutraldensitysurface,potentialdensitysurface,andmixingpath*
Keywords: adiabaticdensitysurface,neutraldensitysurface,potentialdensitysurface,mixingpath
Abstract:
？inthispaper,adiabaticdensitysurface,neutraldensitysurfaceandpotentialdensitysurfacearecompared.theadiabaticdensitysurfaceisdefinedasthesurfaceonwhichawaterparcelcanmoveadiabatically,withoutchangingitspotentialtemperatureandsalinity.forawaterparceltakenatagivenstationandpressurelevel,thecorrespondingadiabaticdensitysurfacecanbedeterminedthroughsimplecalculations.thisfamilyofsurfaceisneutrallybuoyantintheworldocean,anddifferentfromothersurfacesthatarenottrulyneutrallybuoyant.inordertoexploremixingpathintheocean,amixingratiomisintroduced,whichisdefinedastheportionofpotentialtemperatureandsalinityofawaterparcelthathasexchangedwiththeenvironmentduringasegmentofmigrationintheocean.twoextremesituationsofmixingpathintheoceanarem=0(nomixing),whichisrepresentedbytheadiabaticdensitycurve,andm=1,wheretheoriginalinformationiscompletelylostthroughmixing.thelatterisrepresentedbytheneutraldensitycurve.therealityliesinbetween,namely,0
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