georefid:2006-051833SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.1190/1.2202668<gco:CharacterString>Marine EM techniques for gas-hydrate detection and hazard mitigation</gco:CharacterString>2006-01-01publicationgeorefid:2006-051833doi:10.1190/1.2202668Weitemeyer, KarenScripps Institution of Oceanography, La Jolla, CA, United StatesauthorConstable, StevenauthorKey, KerryauthorSociety of Exploration Geophysicists, Tulsa, OK, United StatespublisherdocumentHardcopyIn: Herron, Don (prefacer), Gas hydrates25 (5)629-632Marine controlled-source electromagnetic (CSEM) sounding is a new tool available to geophysicists for offshore hydrocarbon exploration. Although the technique has been developed for the detection of deep hydrocarbon reservoirs with relatively high resistivities, it also has the potential to be a useful tool for geohazard mitigation via gas hydrate detection. The hydrate target occurs in the shallow section (hundreds of meters in depth), and is manifested by subtle resistivity contrasts (a few Omega -m). This requires modifications to the CSEM technique to extend its capability of imaging the shallower hydrate section.completedEconomic geology, geology of energy sourcesApplied geophysicsblowoutsbottom-simulating reflectorscase studiesdetectionEast Pacificelectromagnetic methodsfrequency domain analysisgas hydratesgeologic hazardsgeophysical methodsgeophysical profilesgeophysical surveysHydrate RidgeimageryLeg 204marine methodsmeasurement-while-drillingmitigationnatural gasNorth PacificNortheast PacificOcean Drilling ProgramODP Site 1244ODP Site 1245ODP Site 1246ODP Site 1252Pacific Oceanpetroleumresistivityseismic methodsseismic profilesslope stabilitysurveysurn:org.iodp:exp:204urnlargerWorkCitationcampaignurn:org.iodp:exp:204:site:1244urnlargerWorkCitationstudyurn:org.iodp:exp:204urnlargerWorkCitationcampaignurn:org.iodp:exp:204:site:1245urnlargerWorkCitationstudyurn:org.iodp:exp:204urnlargerWorkCitationcampaignurn:org.iodp:exp:204:site:1246urnlargerWorkCitationstudyurn:org.iodp:exp:204urnlargerWorkCitationcampaignurn:org.iodp:exp:204:site:1252urnlargerWorkCitationstudyurn:org.iodp:exp:204urnlargerWorkCitationcampaignEnglishgeoscientificInformation-125.0900-125.060044.350044.3500