Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Gary R. Olhoeft"'
Publikováno v:
Journal of Environmental and Engineering Geophysics. 12:255-266
Many Department of Energy (DOE) sites are contaminated with highly carcinogenic hexavalent chromium (Cr(VI)). In this research, we explore the feasibility of applying complex resistivity to the detection and monitoring of microbially-induced reductio
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 45:2492-2500
As a compact wave packet travels through a dispersive medium, it becomes dilated and distorted. As a result, ground-penetrating radar (GPR) surveys over conductive and/or lossy soils often result in poor image resolution. A dispersive migration metho
Publikováno v:
Scopus-Elsevier
Nonlinear complex-resistivity (NLCR) cross-hole imaging of the vadose zone was performed at the A-014 Outfall at the Savannah River Site, Aiken, SC. The purpose of this experiment was to field-test the ability of this method to detect dense nonaqueou
Autor:
Gary R. Olhoeft
Publikováno v:
IEEE Aerospace and Electronic Systems Magazine. 17:12-20
In this paper the author concentrates on the narrow portion of the electromagnetic spectrum from a few MHz to a few GHz where geophysicists used ground penetrating radar which is sometimes called georadar, ground probing radar, or subsurface radar. G
Autor:
Justin J. Modroo, Gary R. Olhoeft
Publikováno v:
The Leading Edge. 25:306-308
A headline in The Rocky Mountain News on 2 January 2006 read “Avalanche kills 2 snowmobilers.” A full-page color photo accompanied the article which, unfortunately, was not describing an uncommon event. Snow slides or avalanches kill between 150
Autor:
Gary R. Olhoeft, A. P. Annan, John P. Greenhouse, M. L. Brewster, K. A. Sander, J. D. Redman, Bernard H. Kueper
Publikováno v:
Ground Water. 33:977-987
Seven hundred seventy liters of a dense nonaqueous phase liquid (DNAPL), tetrachloroethylene (PCE), were released into an isolated volume of a completely saturated natural sandy aquifer. The release was monitored over a period of 984 hours with a var
Autor:
Aldo T. Mazzella, John P. Greenhouse, David Redman, Kathy Sander, George W. Schneider, Peter Annan, Gary R. Olhoeft, M. L. Brewster, Jeffrey E. Lucius
Publikováno v:
The Leading Edge. 12:261-267
The clearing in the central Ontario pine forest was hot, sandy, and busy as the two visitors stepped from the rental car and looked dubiously at the scene. A large metal‐clad building dominated the east side of the clearing which was about 50 m acr
Publikováno v:
Geophysics, 75 (5), 2010
During the past [Formula: see text], ground-penetrating radar (GPR) has evolved from a skeptically received glacier sounder to a full multicomponent 3D volume-imaging and characterization device. The tool can be calibrated to allow for quantitative e
Publikováno v:
Geophysics Today
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0accd1d71c071a3be7beb75851e15cc
https://doi.org/10.1190/1.9781560802273.ch7
https://doi.org/10.1190/1.9781560802273.ch7
Publikováno v:
Symposium on the Application of Geophysics to Engineering and Environmental Problems 2008.
A significant expense in geophysics is physically collecting data – especially data sets involving multiple field deployments. Limited site access due to hazards, weather, legal issues, etc. may also limit data collection. Consequently, many datase