Hydrologic Characterization of Faults and Other Potentially Conductive Geologic Features in the Unsaturated Zone

by Iraj Javandel, Univ of California, United States,
Chao Shan, Univ of California, United States,

Document Type: Proceeding Paper

Part of: High Level Radioactive Waste Management 1990


The capability of characterizing near-vertical faults and other potentially highly conductive geologic features in the vicinity of a high-level-waste repository is of great importance in site characterization of underground waste-isolation projects. The possibility of using transient air pressure data at depth (resulting from surface barometric pressure fluctuations) for characterizing these features in the unsaturated zone are investigated. Analytical solutions for calculating the pressure response of such systems are presented. Solutions are given for two types of barometric pressure fluctuations, step function and sinusoidal.

Subject Headings: Transient response | Hydrology | Geological faults | Computer software | Geology | Fluid flow | Porous media flow | Hydrologic properties

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