Frederick D. Day-Lewis (Former Employee)
Science and Products
Filter Total Items: 13
No Result Found
Filter Total Items: 94
Quantity and quality of groundwater discharge in a hypersaline lake environment Quantity and quality of groundwater discharge in a hypersaline lake environment
Geophysical and geochemical surveys were conducted to understand groundwater discharge to Great Salt Lake (GSL) and assess the potential significance of groundwater discharge as a source of selenium (Se). Continuous resistivity profiling (CRP) focusing below the sediment/water interface and fiber-optic distributed temperature sensing (FO-DTS) surveys were conducted along the south shore...
Authors
R.B. Anderson, D. L. Naftz, F. D. Day-Lewis, R.D. Henderson, D.O. Rosenberry, Bernard J. Stolp, P. Jewell
Understanding water column and streambed thermal refugia for endangered mussels in the Delaware River Understanding water column and streambed thermal refugia for endangered mussels in the Delaware River
Groundwater discharge locations along the upper Delaware River, both discrete bank seeps and diffuse streambed upwelling, may create thermal niche environments that benefit the endangered dwarf wedgemussel (Alasmidonta heterodon). We seek to identify whether discrete or diffuse groundwater inflow is the dominant control on refugia. Numerous springs and seeps were identified at all...
Authors
Martin A. Briggs, Emily B. Voytek, Frederick D. Day-Lewis, Donald O. Rosenberry, John W. Lane
Statistical mapping of zones of focused groundwater/surface-water exchange using fiber-optic distributed temperature sensing Statistical mapping of zones of focused groundwater/surface-water exchange using fiber-optic distributed temperature sensing
Fiber-optic distributed temperature sensing (FO-DTS) increasingly is used to map zones of focused groundwater/surface-water exchange (GWSWE). Previous studies of GWSWE using FO-DTS involved identification of zones of focused GWSWE based on arbitrary cutoffs of FO-DTS time-series statistics (e.g., variance, cross-correlation between temperature and stage, or spectral power). New...
Authors
Kisa Mwakanyamale, Frederick D. Day-Lewis, Lee D. Slater
Simultaneous estimation of local-scale and flow path-scale dual-domain mass transfer parameters using geoelectrical monitoring Simultaneous estimation of local-scale and flow path-scale dual-domain mass transfer parameters using geoelectrical monitoring
Anomalous solute transport, modeled as rate-limited mass transfer, has an observable geoelectrical signature that can be exploited to infer the controlling parameters. Previous experiments indicate the combination of time-lapse geoelectrical and fluid conductivity measurements collected during ionic tracer experiments provides valuable insight into the exchange of solute between mobile...
Authors
Martin A. Briggs, Frederick D. Day-Lewis, John B. Ong, Gary P. Curtis, John W. Lane
Direct geoelectrical evidence of mass transfer at the laboratory scale Direct geoelectrical evidence of mass transfer at the laboratory scale
Previous field-scale experimental data and numerical modeling suggest that the dual-domain mass transfer (DDMT) of electrolytic tracers has an observable geoelectrical signature. Here we present controlled laboratory experiments confirming the electrical signature of DDMT and demonstrate the use of time-lapse electrical measurements in conjunction with concentration measurements to...
Authors
Ryan D. Swanson, Kamini Singha, Frederick D. Day-Lewis, Andrew Binley, Kristina Keating, Roy Haggerty
Monitoring groundwater-surface water interaction using time-series and time-frequency analysis of transient three-dimensional electrical resistivity changes Monitoring groundwater-surface water interaction using time-series and time-frequency analysis of transient three-dimensional electrical resistivity changes
Time-lapse resistivity imaging is increasingly used to monitor hydrologic processes. Compared to conventional hydrologic measurements, surface time-lapse resistivity provides superior spatial coverage in two or three dimensions, potentially high-resolution information in time, and information in the absence of wells. However, interpretation of time-lapse electrical tomograms is...
Authors
Timothy C. Johnson, Lee D. Slater, Dimitris Ntarlagiannis, Frederick D. Day-Lewis, Mehrez Elwaseif
Science and Products
Filter Total Items: 13
No Result Found
Filter Total Items: 94
Quantity and quality of groundwater discharge in a hypersaline lake environment Quantity and quality of groundwater discharge in a hypersaline lake environment
Geophysical and geochemical surveys were conducted to understand groundwater discharge to Great Salt Lake (GSL) and assess the potential significance of groundwater discharge as a source of selenium (Se). Continuous resistivity profiling (CRP) focusing below the sediment/water interface and fiber-optic distributed temperature sensing (FO-DTS) surveys were conducted along the south shore...
Authors
R.B. Anderson, D. L. Naftz, F. D. Day-Lewis, R.D. Henderson, D.O. Rosenberry, Bernard J. Stolp, P. Jewell
Understanding water column and streambed thermal refugia for endangered mussels in the Delaware River Understanding water column and streambed thermal refugia for endangered mussels in the Delaware River
Groundwater discharge locations along the upper Delaware River, both discrete bank seeps and diffuse streambed upwelling, may create thermal niche environments that benefit the endangered dwarf wedgemussel (Alasmidonta heterodon). We seek to identify whether discrete or diffuse groundwater inflow is the dominant control on refugia. Numerous springs and seeps were identified at all...
Authors
Martin A. Briggs, Emily B. Voytek, Frederick D. Day-Lewis, Donald O. Rosenberry, John W. Lane
Statistical mapping of zones of focused groundwater/surface-water exchange using fiber-optic distributed temperature sensing Statistical mapping of zones of focused groundwater/surface-water exchange using fiber-optic distributed temperature sensing
Fiber-optic distributed temperature sensing (FO-DTS) increasingly is used to map zones of focused groundwater/surface-water exchange (GWSWE). Previous studies of GWSWE using FO-DTS involved identification of zones of focused GWSWE based on arbitrary cutoffs of FO-DTS time-series statistics (e.g., variance, cross-correlation between temperature and stage, or spectral power). New...
Authors
Kisa Mwakanyamale, Frederick D. Day-Lewis, Lee D. Slater
Simultaneous estimation of local-scale and flow path-scale dual-domain mass transfer parameters using geoelectrical monitoring Simultaneous estimation of local-scale and flow path-scale dual-domain mass transfer parameters using geoelectrical monitoring
Anomalous solute transport, modeled as rate-limited mass transfer, has an observable geoelectrical signature that can be exploited to infer the controlling parameters. Previous experiments indicate the combination of time-lapse geoelectrical and fluid conductivity measurements collected during ionic tracer experiments provides valuable insight into the exchange of solute between mobile...
Authors
Martin A. Briggs, Frederick D. Day-Lewis, John B. Ong, Gary P. Curtis, John W. Lane
Direct geoelectrical evidence of mass transfer at the laboratory scale Direct geoelectrical evidence of mass transfer at the laboratory scale
Previous field-scale experimental data and numerical modeling suggest that the dual-domain mass transfer (DDMT) of electrolytic tracers has an observable geoelectrical signature. Here we present controlled laboratory experiments confirming the electrical signature of DDMT and demonstrate the use of time-lapse electrical measurements in conjunction with concentration measurements to...
Authors
Ryan D. Swanson, Kamini Singha, Frederick D. Day-Lewis, Andrew Binley, Kristina Keating, Roy Haggerty
Monitoring groundwater-surface water interaction using time-series and time-frequency analysis of transient three-dimensional electrical resistivity changes Monitoring groundwater-surface water interaction using time-series and time-frequency analysis of transient three-dimensional electrical resistivity changes
Time-lapse resistivity imaging is increasingly used to monitor hydrologic processes. Compared to conventional hydrologic measurements, surface time-lapse resistivity provides superior spatial coverage in two or three dimensions, potentially high-resolution information in time, and information in the absence of wells. However, interpretation of time-lapse electrical tomograms is...
Authors
Timothy C. Johnson, Lee D. Slater, Dimitris Ntarlagiannis, Frederick D. Day-Lewis, Mehrez Elwaseif