The Most Likely Groundwater Flux Through the Unsaturated Tuff Matrix at USW H-1

by John H. Gauthier, SPECTRA Research Inst, Albuquerque, United States,

Document Type: Proceeding Paper

Part of: High Level Radioactive Waste Management 1993


Using a probabilistic inverse method, an estimate is made of the groundwater flux through the unsaturated tuff matrix at drill hole USW H-1 in Yucca Mountain. The most likely flux is found to be between 0 and 0.01 mm/yr - virtually a hydrostatic condition. This result is consistent at all elevations where in-situ data are available, including the upper nonwelded strata. This study has implications for flow-model validation and future data collection.

Subject Headings: Groundwater flow | Radioactive wastes | Probability | Matrix (mathematics) | Field tests | Groundwater | Waste disposal

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