Joint Inversion of Hydrologic and Geophysical Data for Permeability Distribution of an Alluvial Aquifer
Abstract
This is the final report on a field and modeling study aimed at developing methods to map permeability by combining hydrologic and surface geophysical data. Results include: (1) recognizing variation in cobble and sand units with principal components analysis based on borehole geophysical logs; (2) demonstrating a method for recovery of core from these coarse deposits; (3) determining stiffness and damping coefficients by jointly inverting velocity dispersion and attenuation data from vertical seismic profiles (VSPs); (4) recognizing variation below the water table with VSPs, transient electromagnetic soundings, and ground penetrating radar; (5) demonstrating a method for modeling hydrologic responses at a well with MODFLOW; (6) generating program developments in MODFLOW and MODFLOWP to facilitate modeling 3-D heterogeneous aquifer systems. Also, findings from this project were the basis for a follow-on, five year URISP project to develop a field scale control volume (research wellfield) to continue research to develop methods for mapping permeability with non-invasive surface geophysical methods.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 24, 1998
- Accession Number
- ADA358024
Entities
People
- Warren Barrash
Organizations
- Boise State University