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    Using CSEM techniques to map the shallow section of seafloor : from the coastline to the edges of the continental slope

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    GPY0WA105.pdf (1.285Mb)
    Date
    2007-03-01
    Author
    Evans, Rob L.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/4845
    As published
    https://doi.org/10.1190/1.2434798
    DOI
    10.1190/1.2434798
    Abstract
    Many important processes occur within the shallow section of the seafloor on the continental shelf and slope, yet conventional geophysical constraints on the physical properties within this critical boundary layer are limited. Some of the key constraints involve quantification of fluids within the seafloor, which can be provided by electrical methods. This paper reviews the application of a towed EM system to map the uppermost 20 m of seafloor in a variety of settings ranging from nearshore regions in water depths of approximately 10 m on the continental shelf out to water depths of 1300 m. The system is a mapping tool that provides areal maps of seafloor resistivity and has been used for a variety of purposes, including sedimentary characterization and facies mapping, evaluation of groundwater discharge, and mapping seafloor mounds in the Gulf of Mexico, thought to contain massive deposits of gas hydrate.
    Description
    Author Posting. © Society of Exploration Geophysicists, 2007. This article is posted here by permission of Society of Exploration Geophysicists for personal use, not for redistribution. The definitive version was published in Geophysics 72 (2007): WA105, doi:10.1190/1.2434798.
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    • Geology and Geophysics (G&G)
    Suggested Citation
    Geophysics 72 (2007): WA105
     
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