海洋地质调查与研究元数据的标准化(4)

257051,China),2003,19(10):20223

Thereareabundantoilandgasresourcesintheworldwidedeepwaterareas,andtheexplorationandproductionindeepwaterhaveexpandedgreatlyduringtheseyears.Approximately58Bboetotalre2sourceshavebeendiscoveredindeepwaterfrom18basinsonthesixcontinents.Nowadays,deepwateroilandgasresourceshavebeenbroughtintoproductioninBrazilandtheGulfofMexicoofAmerica,andtheoutputisrisingsteadily.ThedeepwaterdiscoveriesinWestAfricaareatthedevelopmentofplanningstages.Withanincreasingnumberofexplorationwellscompleted,andincreasingcapitalex2penditure,offshoredrillingisgoingintodeepwaterandultra2deepwater,andsignificantreservevolumehasbeenaddedeachyear.Theglobaldeepwaterexplorationsuccessratewas30%,whichwasthehighestinWestAfrica.Indeepwaterareas,thepotentialforsourcerocksindeepwater,andWorld2classsourcerockshavebeenfoundinJurassicand;mostofthere2sourcesfoundtodateareinturbiditesandstonegenerallypresentindeepwaterdepositionalenvironment;trapstrappingcomponents.Thebasininnortherncontinentalslopeinthetopara2passivemarginbasin.Fromsourcerocks,reservoirs,topsealsaccumulationconditions,thegeologicalcondi2tionsarefavourablefor,thusitishopefultofindoilandgasfield.Keywords:;theSouthChinaSea

STANDAROFMARINEGEOLOGICALSURVEYANDRE2SEARCHMETADATA

DAIQin2fen,SUGuo2hui,WEIHe2long,HEShu2feng

(InstituteofMarineGeology,Qingdao266071,China),2003,19(10):27229

Metadatabecomeveryimportantinthemanagementofsharingandefficientuseofmarinegeologicaldata,withtheexpansionofdigitalgeologicaldata.BasedonISO/19115GeographicMetadataInterna2tionalStandard,MarineGeologicalSurveyandResearchMetadataProfileisdrawn.Thisprofilewillprovidedataproducerwithappropriateinformationforcharacterizingtheirdataproperlyandfacilitat2ingdatamanagementaswellasdatadiscoveryandreuse.Keywords:marinegeology;metadata

AREVIEWONGEOCHEMICALDETECTIONANDANALYSISTECH2NOLOGIESOFPROSPECTINGGASHYDRATESINMARINESEDI2MENTS

CHENGSi2hai,CHENDao2hua,ZHANGXin,LIUJian

(GuangzhouMarineGeologicalSurvey,Guangzhou510760,China),2003,19(10):30234

Gashydrateisaveryimportantmarineenergyinthefuture.Technologiesofgeochemicaldetectionandanalysisingeologicalsurvey,explorationanddevelopmentforgashydrateinmarinesedimentshavebeendiscussedinbiref.Thegeochemicalmethodsforprospectinggashydrateinmarinesedmentsin2clude:gaseoushydrocarbon(mostlymethane)inthesediments,waterandsurfaceatmosphere,ionsinporewaterandisotopegeochemicaldetections.AccordingtothedemandonmarinegashydrateinChi2naatpresent,thispaperalsoputsforwardsomesuggestionsondevelopingnewtechnologiesforgeo2chemicaldetectionandanalysis.

Keywords:gashydrate;geochemicaldetectionandanalysistechnologies;marinesediment

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