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<article xsi:noNamespaceSchemaLocation="http://jats.nlm.nih.gov/publishing/1.1/xsd/JATS-journalpublishing1-mathml3.xsd" dtd-version="1.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><front><journal-meta><journal-id journal-id-type="publisher-id">JSE</journal-id><journal-title-group><journal-title>Journal of Seismic Exploration</journal-title></journal-title-group><issn>0963-0651</issn><eissn/><publisher><publisher-name>AccScience Publishing</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi"/><article-categories><subj-group subj-group-type="heading"><subject>Article</subject></subj-group></article-categories><title>Integrated 2D 4-C OBC analysis for estimating hydrate concentrations, Green Canyon, Gulf of Mexico</title><url>https://geophysical-press.com/journal/JSE/articles/384</url><author>DeANGELOM.V.,SAVAD.C.,HARDAGEB.A.,MURRAYP.E.</author><pub-date pub-type="publication-year"><year>2010</year></pub-date><volume>19</volume><issue>3</issue><history><date date-type="pub"><published-time>2010-07-01</published-time></date></history><abstract>DeAngelo, M.V., Sava, D.C., Hardage, B.A. and Murray, P.E., 2010. Integrated 2D 4-C OBC analysis for estimating hydrate concentrations, Green Canyon, Gulf of Mexico. Journal of Seismic Exploration, 19: 263-278. A 2D four-component ocean-bottom-cable seismic survey, originally acquired for the exploration of deeper hydrocarbon targets, was used to estimate near-seafloor hydrate concentrations in the Genesis Field, Green Canyon area of the Gulf of Mexico. The high-resolution properties of the P-P and P-SV processed as common-receiver gathers were utilized to image subtle features of near-seafloor geology. Interpretation of depth equivalent events on P-P and P-SV near-offset images constrained Vp/Vs ratios and zero-offset reflection times. These events were used as inputs to create near-seafloor (</abstract><keywords>hydrate, ocean-bottom-cable, deep-water, inversion, P-P, P-SV</keywords></article-meta></front><body/><back><ref-list><ref id="B1" content-type="article"><label>1</label><element-citation publication-type="journal"><p>Archie, G.E., 1942. The electric resistivity log as an aid in determining some reservoircharacteristics. Petrol. Transact. Am. Inst. Mining, Meta!lur. Petrol. Engin., 146: 54-62.Backus, M.M., Murray, P.E., Hardage, B.A. and Graebner, J., 2006. High-resolutionmulticomponent seismic imaging of deepwater gas-hydrate systems. The Leading Edge, 25:578-596.DeAngelo, M.V., Murray, P.E., Hardage, B.A. and Remington, R.L., 2008. Integrated 2D 4-COBC velocity analysis of near-seafloor sediments, Green Canyon, Gulf of Mexico.Geophysics, 73: B109-B115.Domenico, S.N., 1976. Effect of brine-gas mixture on velocity in an unconsolidated sand reservoir.Geophysics, 41: 882-894.Helgerud, M.B., Dvorkin, J., Nur, A., Sakai, A. and Collet, T., 1999. Elastic-wave velocity inmarine sediments with gas hydrates: Effective medium modeling. Geophys. Res. Lett., 26:2021-2024.Milkov, A.V. and Sassen, R., 2001. Estimate of gas hydrate resource, northwestern Gulf of Mexicocontinental slope. Mar. Geol., 179: 71-83.Roberts, H.H., 1995. High-resolution surficial geology of the Louisiana middle-to-upper continentalslope. Gulf Coast Assoc. Geol. Soc. Transact., 45: 503-508.Roberts, H.H., Hardage, B.A., Shedd, W.W. and Hunt Jr., J., 2006. Seafloor reflectivity - Animportant seismic property for interpreting fluid/gas expulsion geology and the presence ofgas hydrate. The Leading Edge, 25: 620-628.Roberts, H.H., Cook, D.J. and Sheedlo, M.K., 1992. Hydrocarbon seeps of the Louisianacontinental slope: Seismic amplitude signature and sea floor response. Gulf Coast Assoc.Geol. Soc. Transact., 42: 349-362.Sassen, R., Losh, S.L., Cathles III, L., Roberts, H.H., Whelan, J.K., Milkov, A.V., Sweet, S.T.and DeFreitas, D.A., 2001. Massive vein-filling gas hydrate: relation to ongoing gasmigration from the deep subsurface of the Gulf of Mexico. Mar. Petrol. Geol., 18: 551-560.Sassen, R., Milkov, A.V., Ozgul, E., Roberts, H.H., Hunt, J.L., Beeunas, M.A., Chanton, J.P.,DeFreitas, D.A. and Sweet, $.T., 2003. Gas venting and subsurface charge in the GreenCanyon area, Gulf of Mexico continental slope: evidence of a deep bacterial methane source?Organic Geochem., 34: 1455-1464.Sava, D.C. and Hardage, B.A., 2006. Rock physics characterization of hydrate-bearing deepwatersediments. The Leading Edge, 25: 616-619.Schlumberger Wireline Services, 1989. Log interpretation principles/applications. SchlumbergerEducational Serv., Houston, TX.Schneider, W.A. and Backus, M.M., 1964. Ocean-bottom seismic measurements off the Californiacoast. J. Geophys. Res., 69: 1135-1143.Tarantola, A., 1987. Inverse Problem Theory. Elsevier Science Publishers, Amsterdam.</p><pub-id pub-id-type="doi"/></element-citation></ref></ref-list></back></article>
