【7A文】天然气水合物.ppt

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1、天然气水合物GasHydrateisanice-likecrystallinesolidformedfromamixtureofwaterandnaturalgas,usuallymethane.Theyoccurintheporespacesofsediments,andmayformcements,nodesorlayers.GasHydrateisfoundinsub-oceanicsedimentsinthepolarregions(shallowwater)andincontinentalslopesediments(deepwate

2、r),wherepressureandtemperatureconditionscombinetomakeitstable.NaturalGasHydratecontainshighlyconcentratedmethane,whichisimportantbothasanenergyresourceandasafactoringlobalclimatechange.GasHydratecanbestudiedinthelaboratory,whereamachineisusedtocreatetheproperpressureandtempe

3、ratureconditionsforhydrateformation,oritcanbestudiedinsituusingseismicdatacollectedaboardshipsandgeophysicalmodels.Currently,groupsofscientistsintheU.S.,Canada,Norway,GreatBritainandJapanareworkingtotrytounderstandgashydrateandtheroleitplaysintheglobalclimateandthefutureoffu

4、els.Doeslossofgasfromgashydrateaccountforextensiveship-sinkingsinthe"BermudaTriangle“.Boetius(2005)太平洋和大西洋大西洋和西印度洋Geological,chemical,biologicalinteractionsChemical/biologicalinteractionLinAnimalsneartheventsShrimpTubewormsScaly-FootSnailClamsLin东太平洋观日落