Physical and chemical characteristics of topographically affected airflow in an open borehole at Yucca Mountain, Nevada

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Borehole UZ6S, on the crest of Yucca Mountain, Nevada Test Site, has exhaled approximately 10{sup 6} m{sup 3} of gas annually during winter months for three successive years. The flow arises from thermal-topographic effects. The average composition of the exhausted gas is: N{sub 2} = 78%, O{sub 2} = 21%, Ar = 0.94%, CO{sub 2} = 0.125%, and CH{sub 4} = 0.2 ppMv. The CO{sub 2} has the following isotopic signature: {sup 14}C = 108.5 percent modern carbon (pmc), and {delta}{sup 13}C = 17.1 per mil. In the thirty-month observation period, there has been a net flux to the atmosphere ... continued below

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15 p.

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Thorstenson, D.C.; Woodward, J.C.; Weeks, E.P. & Haas, H. December 31, 1989.

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Borehole UZ6S, on the crest of Yucca Mountain, Nevada Test Site, has exhaled approximately 10{sup 6} m{sup 3} of gas annually during winter months for three successive years. The flow arises from thermal-topographic effects. The average composition of the exhausted gas is: N{sub 2} = 78%, O{sub 2} = 21%, Ar = 0.94%, CO{sub 2} = 0.125%, and CH{sub 4} = 0.2 ppMv. The CO{sub 2} has the following isotopic signature: {sup 14}C = 108.5 percent modern carbon (pmc), and {delta}{sup 13}C = 17.1 per mil. In the thirty-month observation period, there has been a net flux to the atmosphere of approximately 40 m{sup 3} of liquid water and 1150 kg of carbon. The gas flowing from UZ6S appears to originate in the soil and/or shallow unsaturated zone at Yucca Mountain crest. 25 refs., 6 figs., 4 tabs.

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15 p.

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INIS; OSTI as DE90012526

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  • Nuclear waste isolation in the unsaturated zone: FOCUS `89, Las Vegas, NV (United States), 18-21 Sep 1989

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  • Other: DE90012526
  • Report No.: CONF-890928--25
  • Grant Number: AI08-78ET44802
  • Office of Scientific & Technical Information Report Number: 137750
  • Archival Resource Key: ark:/67531/metadc625804

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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.

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  • December 31, 1989

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  • June 16, 2015, 7:43 a.m.

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  • Jan. 10, 2018, 3:05 p.m.

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Thorstenson, D.C.; Woodward, J.C.; Weeks, E.P. & Haas, H. Physical and chemical characteristics of topographically affected airflow in an open borehole at Yucca Mountain, Nevada, article, December 31, 1989; Reston, Virginia. (digital.library.unt.edu/ark:/67531/metadc625804/: accessed April 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.