Frederick D. Day-Lewis (Former Employee)
Science and Products
Filter Total Items: 13
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Investigation of aquifer-estuary interaction using wavelet analysis of fiber-optic temperature data Investigation of aquifer-estuary interaction using wavelet analysis of fiber-optic temperature data
Fiber-optic distributed temperature sensing (FODTS) provides sub-minute temporal and meter-scale spatial resolution over kilometer-long cables. Compared to conventional thermistor or thermocouple-based technologies, which measure temperature at discrete (and commonly sparse) locations, FODTS offers nearly continuous spatial coverage, thus providing hydrologic information at...
Authors
R.D. Henderson, Frederick D. Day-Lewis, Charles F. Harvey
Geoelectrical measurement and modeling of biogeochemical breakthrough behavior during microbial activity Geoelectrical measurement and modeling of biogeochemical breakthrough behavior during microbial activity
We recorded bulk electrical conductivity (σb) along a soil column during microbially-mediated selenite oxyanion reduction. Effluent fluid electrical conductivity and early time σb were modeled according to classic advective-dispersive transport of the nutrient medium. However, σb along the column exhibited strongly bimodal breakthrough which cannot be explained by changes in the...
Authors
L.D. Slater, Frederick D. Day-Lewis, D. Ntarlagiannis, M. O'Brien, N. Yee
Advancing process‐based watershed hydrological research using near‐surface geophysics: A vision for, and review of, electrical and magnetic geophysical methods Advancing process‐based watershed hydrological research using near‐surface geophysics: A vision for, and review of, electrical and magnetic geophysical methods
We want to develop a dialogue between geophysicists and hydrologists interested in synergistically advancing process based watershed research. We identify recent advances in geophysical instrumentation, and provide a vision for the use of electrical and magnetic geophysical instrumentation in watershed scale hydrology. The focus of the paper is to identify instrumentation that could...
Authors
D.A. Robinson, A. Binley, N. Crook, F. D. Day-Lewis, T. P. A Ferre, V. J. S. Grauch, R. Knight, M. Knoll, V. Lakshmi, R. Miller, J. Nyquist, L. Pellerin, K. Singha, L. Slater
Implications of rate-limited mass transfer for aquifer storage and recovery Implications of rate-limited mass transfer for aquifer storage and recovery
Pressure to decrease reliance on surface water storage has led to increased interest in aquifer storage and recovery (ASR) systems. Recovery efficiency, which is the ratio of the volume of recovered water that meets a predefined standard to total volume of injected fluid, is a common criterion of ASR viability. Recovery efficiency can be degraded by a number of physical and geochemical...
Authors
Sean L. Culkin, Kamini Singha, Frederick D. Day-Lewis
Geoelectrical inference of mass transfer parameters using temporal moments Geoelectrical inference of mass transfer parameters using temporal moments
We present an approach to infer mass transfer parameters based on (1) an analytical model that relates the temporal moments of mobile and bulk concentration and (2) a bicontinuum modification to Archie's law. Whereas conventional geochemical measurements preferentially sample from the mobile domain, electrical resistivity tomography (ERT) is sensitive to bulk electrical conductivity and...
Authors
Frederick D. Day-Lewis, Kamini Singha
Electrical characterization of non‐Fickian transport in groundwater and hyporheic systems Electrical characterization of non‐Fickian transport in groundwater and hyporheic systems
Recent work indicates that processes controlling solute mass transfer between mobile and less mobile domains in porous media may be quantified by combining electrical geophysical methods and electrically conductive tracers. Whereas direct geochemical measurements of solute preferentially sample the mobile domain, electrical geophysical methods are sensitive to changes in bulk electrical
Authors
Kamini Singha, Adam Pidlisecky, Frederick D. Day-Lewis, Michael N. Gooseff
Science and Products
Filter Total Items: 13
No Result Found
Filter Total Items: 94
Investigation of aquifer-estuary interaction using wavelet analysis of fiber-optic temperature data Investigation of aquifer-estuary interaction using wavelet analysis of fiber-optic temperature data
Fiber-optic distributed temperature sensing (FODTS) provides sub-minute temporal and meter-scale spatial resolution over kilometer-long cables. Compared to conventional thermistor or thermocouple-based technologies, which measure temperature at discrete (and commonly sparse) locations, FODTS offers nearly continuous spatial coverage, thus providing hydrologic information at...
Authors
R.D. Henderson, Frederick D. Day-Lewis, Charles F. Harvey
Geoelectrical measurement and modeling of biogeochemical breakthrough behavior during microbial activity Geoelectrical measurement and modeling of biogeochemical breakthrough behavior during microbial activity
We recorded bulk electrical conductivity (σb) along a soil column during microbially-mediated selenite oxyanion reduction. Effluent fluid electrical conductivity and early time σb were modeled according to classic advective-dispersive transport of the nutrient medium. However, σb along the column exhibited strongly bimodal breakthrough which cannot be explained by changes in the...
Authors
L.D. Slater, Frederick D. Day-Lewis, D. Ntarlagiannis, M. O'Brien, N. Yee
Advancing process‐based watershed hydrological research using near‐surface geophysics: A vision for, and review of, electrical and magnetic geophysical methods Advancing process‐based watershed hydrological research using near‐surface geophysics: A vision for, and review of, electrical and magnetic geophysical methods
We want to develop a dialogue between geophysicists and hydrologists interested in synergistically advancing process based watershed research. We identify recent advances in geophysical instrumentation, and provide a vision for the use of electrical and magnetic geophysical instrumentation in watershed scale hydrology. The focus of the paper is to identify instrumentation that could...
Authors
D.A. Robinson, A. Binley, N. Crook, F. D. Day-Lewis, T. P. A Ferre, V. J. S. Grauch, R. Knight, M. Knoll, V. Lakshmi, R. Miller, J. Nyquist, L. Pellerin, K. Singha, L. Slater
Implications of rate-limited mass transfer for aquifer storage and recovery Implications of rate-limited mass transfer for aquifer storage and recovery
Pressure to decrease reliance on surface water storage has led to increased interest in aquifer storage and recovery (ASR) systems. Recovery efficiency, which is the ratio of the volume of recovered water that meets a predefined standard to total volume of injected fluid, is a common criterion of ASR viability. Recovery efficiency can be degraded by a number of physical and geochemical...
Authors
Sean L. Culkin, Kamini Singha, Frederick D. Day-Lewis
Geoelectrical inference of mass transfer parameters using temporal moments Geoelectrical inference of mass transfer parameters using temporal moments
We present an approach to infer mass transfer parameters based on (1) an analytical model that relates the temporal moments of mobile and bulk concentration and (2) a bicontinuum modification to Archie's law. Whereas conventional geochemical measurements preferentially sample from the mobile domain, electrical resistivity tomography (ERT) is sensitive to bulk electrical conductivity and...
Authors
Frederick D. Day-Lewis, Kamini Singha
Electrical characterization of non‐Fickian transport in groundwater and hyporheic systems Electrical characterization of non‐Fickian transport in groundwater and hyporheic systems
Recent work indicates that processes controlling solute mass transfer between mobile and less mobile domains in porous media may be quantified by combining electrical geophysical methods and electrically conductive tracers. Whereas direct geochemical measurements of solute preferentially sample the mobile domain, electrical geophysical methods are sensitive to changes in bulk electrical
Authors
Kamini Singha, Adam Pidlisecky, Frederick D. Day-Lewis, Michael N. Gooseff