Preliminary geostatistical modeling of thermal conductivity for a cross section of Yucca Mountain, Nevada

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Description

Two-dimensional, heterogeneous, spatially correlated models of thermal conductivity and bulk density have been created for a representative, east-west cross section of Yucca Mountain, Nevada, using geostatistical simulation. The thermal conductivity models are derived from spatially correlated, surrogate material-property models of porosity, through a multiple linear-regression equation, which expresses thermal conductivity as a function of porosity and initial temperature and saturation. Bulk-density values were obtained through a similar, linear-regression relationship with porosity. The use of a surrogate-property allows the use of spatially much-more-abundant porosity measurements to condition the simulations. Modeling was conducted in stratigraphic coordinates to represent original depositional continuity of ... continued below

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60 p.

Creation Information

Rautman, C.A. September 1, 1995.

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  • Rautman, C.A. Sandia National Labs., Albuquerque, NM (United States). Geohydrology Dept.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

Two-dimensional, heterogeneous, spatially correlated models of thermal conductivity and bulk density have been created for a representative, east-west cross section of Yucca Mountain, Nevada, using geostatistical simulation. The thermal conductivity models are derived from spatially correlated, surrogate material-property models of porosity, through a multiple linear-regression equation, which expresses thermal conductivity as a function of porosity and initial temperature and saturation. Bulk-density values were obtained through a similar, linear-regression relationship with porosity. The use of a surrogate-property allows the use of spatially much-more-abundant porosity measurements to condition the simulations. Modeling was conducted in stratigraphic coordinates to represent original depositional continuity of material properties and the completed models were transformed to real-world coordinates to capture present-day tectonic tilting and faulting of the material-property units. Spatial correlation lengths required for geostatistical modeling were assumed, but are based on the results of previous transect-sampling and geostatistical-modeling work.

Physical Description

60 p.

Notes

INIS; OSTI as DE96001763

Source

  • Other Information: PBD: Sep 1995

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Identifier

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  • Other: DE96001763
  • Report No.: SAND--94-2283
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/119961 | External Link
  • Office of Scientific & Technical Information Report Number: 119961
  • Archival Resource Key: ark:/67531/metadc620338

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Creation Date

  • September 1, 1995

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

Description Last Updated

  • April 13, 2016, 5:33 p.m.

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Rautman, C.A. Preliminary geostatistical modeling of thermal conductivity for a cross section of Yucca Mountain, Nevada, report, September 1, 1995; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc620338/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.