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Geophysical Surveys Across The Boise Hydrogeophysical Research Site To Determine Geophysical Parameters Of A Shallow, Alluvial AquiferNormal access

Authors: William P. Clement, Michael D. Knoll, Lee M. Liberty, Paul R. Donaldson, Paul Michaels, Warren Barrash and John R. Pelton
Event name: 12th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems
Session: Hydrology Forum - Geophysical Applications In Hydrologic Mapping
Publication date: 14 March 1999
Organisations: EEGS
Language: English
Info: Extended abstract, PDF ( 1.4Mb )

Summary:
At the Boise Hydrogeophysical Research Site (BHRS), we are characterizing the
hydrogeophysical parameters of a cobble-and-sand, unconfined aquifer using a wide variety of
geophysical methods. Our goal is to develop methods for mapping variations in permeability by
combining non-invasive geophysical data with hydrologic measurements. We are using seismic,
ground penetrating radar, and electrical methods in a variety of configurations to provide images
of and parameter distributions at the BHRS. Issues such as resolution, depth of penetration, and
the ability to image the desired parameters will help determine the most effective methods.
Supporting data sets from the BHRS include core analyses and geophysical logs from 18 wells at
the site. We will use these data to verify our geophysical interpretations. The various geophysical
methods and acquisition geometries, combined with the well control, will provide an outstanding
data set to characterize the heterogeneity of the subsurface beneath this alluvial aquifer, and find
ways to map permeability with geophysical information.

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