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- W2890776730 abstract "PreviousNext No AccessSEG Technical Program Expanded Abstracts 2018Marine self-potential and controlled-source EM measurements using an autonomous underwater vehicleAuthors: Steven ConstablePeter KowalczykSteve BloomerSteven ConstableScripps Institution of OceanographySearch for more papers by this author, Peter KowalczykOcean Floor GeophysicsSearch for more papers by this author, and Steve BloomerOcean Floor GeophysicsSearch for more papers by this authorhttps://doi.org/10.1190/segam2018-2997856.1 SectionsSupplemental MaterialAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail AbstractUsing an autonomous underwater vehicle (AUV) equipped with a three-axis electric field receiver we were able to make measurements of self potential (SP) fields over a hydrothermal prospect in the Iheya area of the Okinawa Trough, southwest of Japan. Additionally, by deploying battery-powered controlledsource EM (CSEM) transmitters on the seafloor, we were able to make CSEM measurements out to ranges of about 800 m. We observed negative SP anomalies associated with seafloor mounds, localized close to the seafloor and probably associated with hydrothermal venting. Apparent conductivities computed from the CSEM data were as high as 30 S/m, and were not correlated with the largest SP anomalies. A preliminary 3D inversion yielded a compact, 10 S/m body extending 100 m below the seafloor. The high conductivities may be associated with hydrothermal systems, but more likely are a manifestation of submarine massive sulfide (SMS) deposits.Presentation Date: Thursday, October 18, 2018Start Time: 8:30:00 AMLocation: 213A (Anaheim Convention Center)Presentation Type: OralKeywords: spontaneous potential, CSEM, electromagnetics, marinePermalink: https://doi.org/10.1190/segam2018-2997856.1FiguresReferencesRelatedDetailsCited bySeismoelectric and electroseismic responses to a point source in a marine stratified model18 May 2020 | Geophysical Prospecting, Vol. 68, No. 6 SEG Technical Program Expanded Abstracts 2018ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2018 Pages: 5520 publication data© 2018 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 27 Aug 2018 CITATION INFORMATION Steven Constable, Peter Kowalczyk, and Steve Bloomer, (2018), Marine self-potential and controlled-source EM measurements using an autonomous underwater vehicle, SEG Technical Program Expanded Abstracts : 964-968. https://doi.org/10.1190/segam2018-2997856.1 Plain-Language Summary Keywordsspontaneous potentialCSEMelectromagneticsmarinePDF DownloadLoading ..." @default.
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- W2890776730 title "Marine self-potential and controlled-source EM measurements using an autonomous underwater vehicle" @default.
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