Frederick D. Day-Lewis (Former Employee)
Science and Products
Filter Total Items: 13
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Fiber‐optic distributed temperature sensing: A new tool for assessment and monitoring of hydrologic processes Fiber‐optic distributed temperature sensing: A new tool for assessment and monitoring of hydrologic processes
Fiber‐optic distributed temperature sensing (FO DTS) is an emerging technology for characterizing and monitoring a wide range of important earth processes. FO DTS utilizes laser light to measure temperature along the entire length of standard telecommunications optical fibers. The technology can measure temperature every meter over FO cables up to 30 kilometers (km) long. Commercially...
Authors
John W. Lane, Frederick D. Day-Lewis, Carole D. Johnson, Cian B. Dawson, David L. Nelms, Cheryl A. Eddy-Miller, Jerrod D. Wheeler, Charles F. Harvey, Hanan N. Karam
Levee evaluation using MASW: Preliminary findings from the Citrus Lakefront Levee, New Orleans, Louisiana Levee evaluation using MASW: Preliminary findings from the Citrus Lakefront Levee, New Orleans, Louisiana
The utility of the multi‐channel analysis of surface waves (MASW) seismic method for non‐invasive assessment of earthen levees was evaluated for a section of the Citrus Lakefront Levee, New Orleans, Louisiana. This test was conducted after the New Orleans' area levee system had been stressed by Hurricane Katrina in 2005. The MASW data were acquired in a seismically noisy, urban...
Authors
John W. Lane, Julian M. Ivanov, Frederick D. Day-Lewis, Drew Clemens, Robert Patev, Richard D. Miller
Characterizing submarine ground‐water discharge using fiber‐optic distributed temperature sensing and marine electrical resistivity Characterizing submarine ground‐water discharge using fiber‐optic distributed temperature sensing and marine electrical resistivity
Submarine ground‐water discharge (SGD) contributes important solute fluxes to coastal waters. Pollutants are transported to coastal ecosystems by SGD at spatially and temporally variable rates. New approaches are needed to characterize the effects of storm‐event, tidal, and seasonal forcing on SGD. Here, we evaluate the utility of two geophysical methods‐fiber‐optic distributed...
Authors
Rory Henderson, Frederick D. Day-Lewis, John W. Lane, Charles F. Harvey, Lanbo Liu
Moment inference from tomograms Moment inference from tomograms
Time-lapse geophysical tomography can provide valuable qualitative insights into hydrologic transport phenomena associated with aquifer dynamics, tracer experiments, and engineered remediation. Increasingly, tomograms are used to infer the spatial and/or temporal moments of solute plumes; these moments provide quantitative information about transport processes (e.g., advection...
Authors
Frederick D. Day-Lewis, Yongping Chen, Kamini Singha
Accounting for tomographic resolution in estimating hydrologic properties from geophysical data Accounting for tomographic resolution in estimating hydrologic properties from geophysical data
No abstract available.
Authors
K. Singha, Frederick D. Day-Lewis, S. Moysey
Integrating hydrologic and geophysical data to constrain coastal surficial aquifer processes at multiple spatial and temporal scales Integrating hydrologic and geophysical data to constrain coastal surficial aquifer processes at multiple spatial and temporal scales
Since 1997, repeated, coincident geophysical surveys and extensive hydrologic studies in shallow monitoring wells have been used to study static and dynamic processes associated with surface water-groundwater interaction at a range of spatial scales at the estuarine and ocean boundaries of an undeveloped, permeable barrier island in the Georgia part of the U.S. South Atlantic Bight...
Authors
Gregory M. Schultz, Carolyn Ruppel, Patrick Fulton
Science and Products
Filter Total Items: 13
No Result Found
Filter Total Items: 94
Fiber‐optic distributed temperature sensing: A new tool for assessment and monitoring of hydrologic processes Fiber‐optic distributed temperature sensing: A new tool for assessment and monitoring of hydrologic processes
Fiber‐optic distributed temperature sensing (FO DTS) is an emerging technology for characterizing and monitoring a wide range of important earth processes. FO DTS utilizes laser light to measure temperature along the entire length of standard telecommunications optical fibers. The technology can measure temperature every meter over FO cables up to 30 kilometers (km) long. Commercially...
Authors
John W. Lane, Frederick D. Day-Lewis, Carole D. Johnson, Cian B. Dawson, David L. Nelms, Cheryl A. Eddy-Miller, Jerrod D. Wheeler, Charles F. Harvey, Hanan N. Karam
Levee evaluation using MASW: Preliminary findings from the Citrus Lakefront Levee, New Orleans, Louisiana Levee evaluation using MASW: Preliminary findings from the Citrus Lakefront Levee, New Orleans, Louisiana
The utility of the multi‐channel analysis of surface waves (MASW) seismic method for non‐invasive assessment of earthen levees was evaluated for a section of the Citrus Lakefront Levee, New Orleans, Louisiana. This test was conducted after the New Orleans' area levee system had been stressed by Hurricane Katrina in 2005. The MASW data were acquired in a seismically noisy, urban...
Authors
John W. Lane, Julian M. Ivanov, Frederick D. Day-Lewis, Drew Clemens, Robert Patev, Richard D. Miller
Characterizing submarine ground‐water discharge using fiber‐optic distributed temperature sensing and marine electrical resistivity Characterizing submarine ground‐water discharge using fiber‐optic distributed temperature sensing and marine electrical resistivity
Submarine ground‐water discharge (SGD) contributes important solute fluxes to coastal waters. Pollutants are transported to coastal ecosystems by SGD at spatially and temporally variable rates. New approaches are needed to characterize the effects of storm‐event, tidal, and seasonal forcing on SGD. Here, we evaluate the utility of two geophysical methods‐fiber‐optic distributed...
Authors
Rory Henderson, Frederick D. Day-Lewis, John W. Lane, Charles F. Harvey, Lanbo Liu
Moment inference from tomograms Moment inference from tomograms
Time-lapse geophysical tomography can provide valuable qualitative insights into hydrologic transport phenomena associated with aquifer dynamics, tracer experiments, and engineered remediation. Increasingly, tomograms are used to infer the spatial and/or temporal moments of solute plumes; these moments provide quantitative information about transport processes (e.g., advection...
Authors
Frederick D. Day-Lewis, Yongping Chen, Kamini Singha
Accounting for tomographic resolution in estimating hydrologic properties from geophysical data Accounting for tomographic resolution in estimating hydrologic properties from geophysical data
No abstract available.
Authors
K. Singha, Frederick D. Day-Lewis, S. Moysey
Integrating hydrologic and geophysical data to constrain coastal surficial aquifer processes at multiple spatial and temporal scales Integrating hydrologic and geophysical data to constrain coastal surficial aquifer processes at multiple spatial and temporal scales
Since 1997, repeated, coincident geophysical surveys and extensive hydrologic studies in shallow monitoring wells have been used to study static and dynamic processes associated with surface water-groundwater interaction at a range of spatial scales at the estuarine and ocean boundaries of an undeveloped, permeable barrier island in the Georgia part of the U.S. South Atlantic Bight...
Authors
Gregory M. Schultz, Carolyn Ruppel, Patrick Fulton