Zobrazeno 1 - 10
of 29
pro vyhledávání: '"John M. Shafer"'
Publikováno v:
Environmental Geosciences. 22:1-18
This study simulated the injection of supercritical phase into the South Georgia Rift (SGR) basin to evaluate the feasibility of long-term storage. Because of the lack of basin data, an equilibrium model was used to estimate the initial hydrostatic p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a35059093418855f1112051a30e0f97d
https://doi.org/10.1306/eg.09191414008
https://doi.org/10.1306/eg.09191414008
Autor:
John M. Shafer, Adrian D. Addison, Michael G. Waddell, Antonio E. Cameron González, Camelia C. Knapp
Publikováno v:
Environmental Geosciences. 17:77-98
Geophysical methods, including a shallow seismic reflection (SSR) survey, surface and borehole ground-penetrating radar (GPR) data, and electrical resistivity imaging (ERI), were conducted at the Savannah River site (SRS), South Carolina, to investig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94178cf42dac1ab5da494829884d7511
https://doi.org/10.1306/eg.08180909012
https://doi.org/10.1306/eg.08180909012
Publikováno v:
Environmental Geosciences. 16:41-56
As part of a multiscale hydrogeophysical and modeling study, a pseudo three-dimensional (3-D) seismic survey was conducted over a contaminant plume at P area, Savannah River site (South Carolina), to enhance the existing geologic model by resolving u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e8bfaeeb9c09f32dc3a32acebac7389
https://doi.org/10.1306/eg.10210808005
https://doi.org/10.1306/eg.10210808005
Publikováno v:
Journal of Maps. 3:231-238
Please click here to download the map associated with this article. Geographic information system (GIS) mapping of geologic sensitivity, defined in this study as the sensitivity of groundwater contamination based on geologic units, and modeling groun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed7b25a094e61d33800f24db2171b9e2
https://doi.org/10.1080/jom.2007.9710841
https://doi.org/10.1080/jom.2007.9710841
Publikováno v:
Hydrogeology Journal. 14:1620-1634
Published information on the correlation and field-testing of the technique of stack-unit/aquifer sensi- tivity mapping with documented subsurface contaminant plumes is rare. The inherent characteristic of stack-unit mapping, which makes it a superio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00d47be8efdf943ce4957e83c48612ae
https://doi.org/10.1007/s10040-006-0083-7
https://doi.org/10.1007/s10040-006-0083-7
Autor:
John M. Shafer, Lacrecia C. Bilbrey
Publikováno v:
Groundwater Monitoring & Remediation. 21:144-151
The funnel-and-gate ground water remediation technology (Starr and Cherry 1994) has received increased attention and application as an in situ alternative to the typical pump-and-treat system. Understanding the effects of heterogeneity on system perf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::828d440d70ee1e7e5530f4a514057da4
https://doi.org/10.1111/j.1745-6592.2001.tb00751.x
https://doi.org/10.1111/j.1745-6592.2001.tb00751.x
Publikováno v:
Groundwater Monitoring & Remediation. 19:125-133
The funnel and gate remediation concept (Star and Cherry 1993) represents a promising, yet relatively under-developed, technology for the passive control and in situ remediation of contaminated ground water. Effective design and implementation of suc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df2fe23a72ab9379dfac47de05a56224
https://doi.org/10.1111/j.1745-6592.1999.tb00195.x
https://doi.org/10.1111/j.1745-6592.1999.tb00195.x
Autor:
James M. Rine, John M. Shafer, C. B. Bennett, J. E. Trudnak, Elzbieta Covington, J. K. Reed, Richard C. Berg
Publikováno v:
Environmental Geology. 35:263-277
A methodology was developed to evaluate and map the contamination potential or aquifer sensitivity of the upper groundwater flow system of a portion of the General Separations Area (GSA) at the Department of Energy's Savannah River Site (SRS) in Sout
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7adb38232454a0daae4b02836df350f5
https://doi.org/10.1007/s002540050313
https://doi.org/10.1007/s002540050313
Autor:
John M Shafer
The three major components of this research were: 1. Application of minimally invasive, cost effective hydrogeophysical techniques (surface and borehole), to generate fine scale (~1m or less) 3D estimates of subsurface heterogeneity. Heterogeneity is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b82acccaead28b35281c41ca2f19da9f
https://doi.org/10.2172/1054156
https://doi.org/10.2172/1054156
Autor:
Mark D. Varljen, John M. Shafer
Publikováno v:
Ground Water. 31:401-409
A technique based on numerical ground-water flow modeling and unconstrained nonlinear optimization has been developed to provide guidance for protecting municipal ground-water supplies from contamination through capture zone management. The technique
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba5b7e46dd8b8f3fff3898115acffc75
https://doi.org/10.1111/j.1745-6584.1993.tb01842.x
https://doi.org/10.1111/j.1745-6584.1993.tb01842.x