A close-up view of a heat-pulse flow-meter tool. The tool is used to determine the vertical flow-rate of ground water in boreholes at the site. This information is used to determine the hydraulic properties of fractures during ambient and pumping conditions.
Geophysical methods are developed and used to characterize and monitor environmental properties that influence or affect the transport and fate of contaminants in the environment. Emphasis is placed on providing increasingly quantitative spatial and temporal information about subsurface structure and the distribution of contaminants. The tools are used by environmental professionals to more efficiently characterize and manage contaminated sites.
Science Feature Articles
Investigations and Research Activities
- A fractured rock geophysical toolbox method selection tool: Day-Lewis, F.D., Johnson, C.D., Slater, L.D., Robinson, J.L., Williams, J.H., Boyden, C.L., Werkema, D., and Lane, J.W., 2016, Groundwater - Technology Spotlight, doi:10.1111/gwat.12397 (Advanced Web release -- More information on the FRGT-MST tool).
- Non-invasive flow path characterization in a mining-impacted wetland: Bethune, J., Randell, J., Runkel, R.L., and Singha, K., 2015, Journal of Contaminant Hydrology, v. 183, p. 29-39, doi:10.1016/j.jconhyd.2015.10.002.
- A comparison of thermal infrared to fiber-optic distributed temperature sensing for evaluation of groundwater discharge to surface water: Hare, D.K., Briggs, M.A., Rosenberry, D.O., Boutt, D.F., and Lane, J.W., 2015, Journal of Hydrology, v. 530, p. 153-166, doi:10.1016/j.jhydrol.2015.09.059 (In Press, Accepted Manuscript).
- A physical explanation for the development of redox microzones in hyporheic flow: Briggs, M.A., Day-Lewis, F.D., Zarnetske, J.P., and Harvey, J.W., 2015, Geophysical Research Letters, v. 42, no. 11, p. 4402-4410, doi:10.1002/2015GL064200.
- 1DTempPro V.2--New features for parameter estimation, heterogeneity, and time-varying exchange: Koch, F.W., Voytek, E.B., Day-Lewis, F.D., Healy, R., M.A., B., Lane, J.W., and Werkema, D., 2015, Groundwater, doi:10.1111/gwat.12369 (Advanced Web release).
- Imaging pathways in fractured rock using three-dimensional electrical resistivity tomography: Robinson, J., Slater, L., Johnson, T., Shapiro, A., Tiedeman, C., Ntarlagiannis, D., Johnson, C., Day-Lewis, F., Lacombe, P., Imbrigiotta, T., and Lane, J., 2015, Groundwater, doi:10.1111/gwat.12356 (Advanced Web release).
USGS scientists conducting a ground penetrating radar (GPR) survey at the south subsurface oil pool at the Bemidji, MN, Crude Oil Spill Research Site.
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