Nuclear magnetic resonance imaging of water content in the subsurface

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Previous theoretical and experimental studies indicated that surface nuclear magnetic resonance (NMR) has the potential to provide cost-effective water content measurements in the subsurface and is a technology ripe for exploitation in practice. The objectives of this investigation are (a) to test the technique under a wide range of hydrogeological conditions and (b) to generalize existing NMR theories in order to correctly model NMR response from conductive ground and to assess properties of the inverse problem. Twenty-four sites with different hydrogeologic settings were selected in New Mexico and Colorado for testing. The greatest limitation of surface NMR technology appears to ... continued below

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Medium: P; Size: 100 pages

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Hendricks, J.; Yao, T. & Kearns, A. January 21, 1999.

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Description

Previous theoretical and experimental studies indicated that surface nuclear magnetic resonance (NMR) has the potential to provide cost-effective water content measurements in the subsurface and is a technology ripe for exploitation in practice. The objectives of this investigation are (a) to test the technique under a wide range of hydrogeological conditions and (b) to generalize existing NMR theories in order to correctly model NMR response from conductive ground and to assess properties of the inverse problem. Twenty-four sites with different hydrogeologic settings were selected in New Mexico and Colorado for testing. The greatest limitation of surface NMR technology appears to be the lack of understanding in which manner the NMR signal is influenced by soil-water factors such as pore size distribution, surface-to-volume ratio, paramagnetic ions dissolved in the ground water, and the presence of ferromagnetic minerals. Although the theoretical basis is found to be sound, several advances need to be made to make surface NMR a viable technology for hydrological investigations. There is a research need to investigate, under controlled laboratory conditions, how the complex factors of soil-water systems affect NMR relaxation times.

Physical Description

Medium: P; Size: 100 pages

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OSTI as DE00750970

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  • Other Information: PBD: 21 Jan 1999

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  • Report No.: DOE/ER/14732
  • Grant Number: FG07-96ER14732
  • DOI: 10.2172/750970 | External Link
  • Office of Scientific & Technical Information Report Number: 750970
  • Archival Resource Key: ark:/67531/metadc707325

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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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  • January 21, 1999

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • Nov. 3, 2015, 2:45 p.m.

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Hendricks, J.; Yao, T. & Kearns, A. Nuclear magnetic resonance imaging of water content in the subsurface, report, January 21, 1999; United States. (digital.library.unt.edu/ark:/67531/metadc707325/: accessed November 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.