Prototype development of an apparatus to locate and map sea floor petroleum seepages. Final technical report

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Description

The objective of the grant was to design, build, and test two autonomous instruments to measure vertical profiles of electrical potential in sea floor sediments. The objectives were fully met when the instruments were successfully deployed in 1,800 feet of water at known petroleum seepage sites in the Gulf of Mexico. The instruments were proven to be able to measure and record signals known to be appropriate to sediments altered by seepage. Two known seepage sites were visited on September 18th and 20th, 1996. At the first, a small-scale instrument capable of measuring 60 cm into the sediment was repeatedly ... continued below

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7 p.

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Creator: Unknown. October 1, 1996.

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Description

The objective of the grant was to design, build, and test two autonomous instruments to measure vertical profiles of electrical potential in sea floor sediments. The objectives were fully met when the instruments were successfully deployed in 1,800 feet of water at known petroleum seepage sites in the Gulf of Mexico. The instruments were proven to be able to measure and record signals known to be appropriate to sediments altered by seepage. Two known seepage sites were visited on September 18th and 20th, 1996. At the first, a small-scale instrument capable of measuring 60 cm into the sediment was repeatedly emplaced by the manipulator arm of a research submarine, along a sea floor traverse. Further, the large-scale instrument, having a probe 3.3 m in length, was deployed by steel cable from the ship and emplaced in the sediment under gravity. Both successfully recorded data from multiple electrodes, revealing the expected negative potentials (Eh values at low at {minus}230 mV) at, and close to, the sediment-water interface, instead of at the normal depths of 3 to 4 m.

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7 p.

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OSTI as DE97000511

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  • Other Information: PBD: [1996]

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  • Other: DE97000511
  • Report No.: DOE/EE/15626--T5
  • Grant Number: FG01-95EE15626
  • DOI: 10.2172/383574 | External Link
  • Office of Scientific & Technical Information Report Number: 383574
  • Archival Resource Key: ark:/67531/metadc686495

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • October 1, 1996

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  • July 25, 2015, 2:20 a.m.

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  • Nov. 24, 2015, 8:15 p.m.

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Prototype development of an apparatus to locate and map sea floor petroleum seepages. Final technical report, report, October 1, 1996; United States. (digital.library.unt.edu/ark:/67531/metadc686495/: accessed December 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.