Three-Dimensional Characterization and Modeling of Permeability in a Field-Scale Control Volume
BOISE STATE UNIV ID CENTER FOR THE GEOPHYSICAL INVESTIGATION OF THE SHALLOW SUBSURFACE
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CY2OO2 was the final year of this 6-yr project during which the Boise Hydrogeophysical Research Site BHRS was established as a field-scale test facility to support development of methods for using indirect abundant, minimally-invasive, inexpensive geophysical information to supplement direct sparse, invasive, expensive hydrogeologic information. The BHRS consists of 18 wells emplaced in 2O-m-thick coarse fluvial deposits that may be divided into five stratigraphic units with layered and patchy heterogeneity at three scales. Wells are located and constructed to support a wide-variety of hydrologic and geophysical tests. State-of-the practice and new methods and instrumentation have been used to determine the three-dimensional distribution of geologic, hydrologic and geophysical parameters, including core analysis borehole geophysical logging single-well permeability, seismic, and radar profiling crosswell seismic and radar tomography multiwell hydraulic tomography dense grids of transient electromagnetic soundings and radar reflection profiles and a tracertime-lapse radar imaging test. Additional results of note include development of a general form of the variogram function to quantify multiscale, multifacies spatial structure demonstration of Voigt-solid model for seismic SH-wave behavior to yield damping in addition to stiffness parameters development of hydraulic tomography method for 3D permeability distribution applying and developing new theory to model time-lapse attenuation differences for radar tomographic imaging of a tracer test analogous to high TDS contaminant plume. Additional findings and developments are given in the report.
- Physical and Dynamic Oceanography