Clifford I Voss, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 78
Evaluation of the sustainability of deep groundwater as an arsenic-safe resource in the Bengal Basin
Tens of millions of people in the Bengal Basin region of Bangladesh and India drink groundwater containing unsafe concentrations of arsenic. This high-arsenic groundwater is produced from shallow ( 150 m where groundwater arsenic concentrations ar
Authors
Holly A. Michaela, Clifford I. Voss
Simulation of ground-water flow in the Shenandoah Valley, Virginia and West Virginia, using variable-direction anisotropy in hydraulic conductivity to represent bedrock structure
Ground-water flow was simulated using variable-direction anisotropy in hydraulic conductivity to represent the folded, fractured sedimentary rocks that underlie the Shenandoah Valley in Virginia and West Virginia. The anisotropy is a consequence of the orientations of fractures that provide preferential flow paths through the rock, such that the direction of maximum hydraulic...
Authors
Richard M. Yager, Scott C. Southworth, Clifford I. Voss
Groundwater flow with energy transport and water-ice phase change: Numerical simulations, benchmarks, and application to freezing in peat bogs
In northern peatlands, subsurface ice formation is an important process that can control heat transport, groundwater flow, and biological activity. Temperature was measured over one and a half years in a vertical profile in the Red Lake Bog, Minnesota. To successfully simulate the transport of heat within the peat profile, the U.S. Geological Survey's SUTRA computer code was modified...
Authors
J.M. McKenzie, Clifford I. Voss, D. I. Siegel
Quasi-horizontal circulation cells in 3D seawater intrusion
The seawater intrusion process is characterized by the difference in freshwater and seawater density that causes freshwater to float on seawater. Many confined aquifers have a large horizontal extension with respect to thickness. In these cases, while buoyancy acts in the vertical direction, flow is confined between the upper and bottom boundaries and the effect of gravity is controlled...
Authors
Elena Abarca, J. Carrera, X. Sanchez-Vila, Clifford I. Voss
Heat transport in the Red Lake Bog, Glacial Lake Agassiz Peatlands
We report the results of an investigation on the processes controlling heat transport in peat under a large bog in the Glacial Lake Agassiz Peatlands. For 2 years, starting in July 1998, we recorded temperature at 12 depth intervals from 0 to 400 cm within a vertical peat profile at the crest of the bog at sub‐daily intervals. We also recorded air temperature 1 m above the peat surface...
Authors
J.M. McKenzie, D. I. Siegel, Donald Rosenberry, P.H. Glaser, Clifford I. Voss
Freshwater-saltwater transition zone movement during aquifer storage and recovery cycles in Brooklyn and Queens, New York City, USA
Freshwater storage in deep aquifers of Brooklyn and Queens, New York, USA, is under consideration as an emergency water supply for New York City. The purpose of a New York City storage and recovery system is to provide an emergency water supply during times of drought or other contingencies and would entail longer-term storage phases than a typical annual cycle. There is concern amongst...
Authors
Paul E. Misut, Clifford I. Voss
Simulation of saltwater movement in the Upper Floridan aquifer in the Savannah, Georgia-Hilton Head Island, South Carolina, area, predevelopment-2004, and projected movement for 2000 pumping conditions
A digital model was developed to simulate ground-water flow and solute transport for the Upper Floridan aquifer in the Savannah, Georgia–Hilton Head Island, South Carolina, area. The model was used to (1) simulate trends of saltwater intrusion from predevelopment to the present day (1885–2004), (2) project these trends from the present day into the future, and (3) evaluate the relative...
Authors
Alden M. Provost, Dorothy F. Payne, Clifford I. Voss
Groundwater modeling
No abstract available.
Authors
Leonard F. Konikow, Thomas E. Reilly, Paul M. Barlow, Clifford I. Voss
Inverse modeling for seawater intrusion in coastal aquifers: Insights about parameter sensitivities, variances, correlations and estimation procedures derived from the Henry problem
Inverse modeling studies employing data collected from the classic Henry seawater intrusion problem give insight into several important aspects of inverse modeling of seawater intrusion problems and effective measurement strategies for estimation of parameters for seawater intrusion. Despite the simplicity of the Henry problem, it embodies the behavior of a typical seawater intrusion...
Authors
E. Sanz, C.I. Voss
The future of hydrogeology
“The Future of Hydrogeology” would seem to be an overly ambitious topic for a theme issue of Hydrogeology Journal or for any other journal. Only a modicum of common sense and experience provides the insight that predicting the future of a science is a task fraught with uncertainty that should be approached with caution and humility. Please be assured that the intent of this issue of the...
Authors
Clifford I. Voss
Three-dimensional variable-density flow simulation of a coastal aquifer in southern Oahu, Hawaii, USA
Three-dimensional modeling of groundwater flow and solute transport in the Pearl Harbor aquifer, southern Oahu, Hawaii, shows that the readjustment of the freshwater–saltwater transition zone takes a long time following changes in pumping, irrigation, or recharge in the aquifer system. It takes about 50 years for the transition zone to move 90% of the distance to its new steady position...
Authors
S. B. Gingerich, C.I. Voss
Hydrogeology Journal in 2004
Hydrogeology Journal continues to flourish. The increase in the size of our yearly volume attests to the success and growing international reputation of the journal. Until 2001, HJ produced about 600 printed pages each year. This number has steadily increased, and in 2005 and 2006, HJ will be allocated 800 pages per year by the publisher. Despite this good news, the journal is having...
Authors
Clifford I. Voss, Perry G. Olcott, Robert Schneider, Christine Watson
Science and Products
Filter Total Items: 78
Evaluation of the sustainability of deep groundwater as an arsenic-safe resource in the Bengal Basin
Tens of millions of people in the Bengal Basin region of Bangladesh and India drink groundwater containing unsafe concentrations of arsenic. This high-arsenic groundwater is produced from shallow ( 150 m where groundwater arsenic concentrations ar
Authors
Holly A. Michaela, Clifford I. Voss
Simulation of ground-water flow in the Shenandoah Valley, Virginia and West Virginia, using variable-direction anisotropy in hydraulic conductivity to represent bedrock structure
Ground-water flow was simulated using variable-direction anisotropy in hydraulic conductivity to represent the folded, fractured sedimentary rocks that underlie the Shenandoah Valley in Virginia and West Virginia. The anisotropy is a consequence of the orientations of fractures that provide preferential flow paths through the rock, such that the direction of maximum hydraulic...
Authors
Richard M. Yager, Scott C. Southworth, Clifford I. Voss
Groundwater flow with energy transport and water-ice phase change: Numerical simulations, benchmarks, and application to freezing in peat bogs
In northern peatlands, subsurface ice formation is an important process that can control heat transport, groundwater flow, and biological activity. Temperature was measured over one and a half years in a vertical profile in the Red Lake Bog, Minnesota. To successfully simulate the transport of heat within the peat profile, the U.S. Geological Survey's SUTRA computer code was modified...
Authors
J.M. McKenzie, Clifford I. Voss, D. I. Siegel
Quasi-horizontal circulation cells in 3D seawater intrusion
The seawater intrusion process is characterized by the difference in freshwater and seawater density that causes freshwater to float on seawater. Many confined aquifers have a large horizontal extension with respect to thickness. In these cases, while buoyancy acts in the vertical direction, flow is confined between the upper and bottom boundaries and the effect of gravity is controlled...
Authors
Elena Abarca, J. Carrera, X. Sanchez-Vila, Clifford I. Voss
Heat transport in the Red Lake Bog, Glacial Lake Agassiz Peatlands
We report the results of an investigation on the processes controlling heat transport in peat under a large bog in the Glacial Lake Agassiz Peatlands. For 2 years, starting in July 1998, we recorded temperature at 12 depth intervals from 0 to 400 cm within a vertical peat profile at the crest of the bog at sub‐daily intervals. We also recorded air temperature 1 m above the peat surface...
Authors
J.M. McKenzie, D. I. Siegel, Donald Rosenberry, P.H. Glaser, Clifford I. Voss
Freshwater-saltwater transition zone movement during aquifer storage and recovery cycles in Brooklyn and Queens, New York City, USA
Freshwater storage in deep aquifers of Brooklyn and Queens, New York, USA, is under consideration as an emergency water supply for New York City. The purpose of a New York City storage and recovery system is to provide an emergency water supply during times of drought or other contingencies and would entail longer-term storage phases than a typical annual cycle. There is concern amongst...
Authors
Paul E. Misut, Clifford I. Voss
Simulation of saltwater movement in the Upper Floridan aquifer in the Savannah, Georgia-Hilton Head Island, South Carolina, area, predevelopment-2004, and projected movement for 2000 pumping conditions
A digital model was developed to simulate ground-water flow and solute transport for the Upper Floridan aquifer in the Savannah, Georgia–Hilton Head Island, South Carolina, area. The model was used to (1) simulate trends of saltwater intrusion from predevelopment to the present day (1885–2004), (2) project these trends from the present day into the future, and (3) evaluate the relative...
Authors
Alden M. Provost, Dorothy F. Payne, Clifford I. Voss
Groundwater modeling
No abstract available.
Authors
Leonard F. Konikow, Thomas E. Reilly, Paul M. Barlow, Clifford I. Voss
Inverse modeling for seawater intrusion in coastal aquifers: Insights about parameter sensitivities, variances, correlations and estimation procedures derived from the Henry problem
Inverse modeling studies employing data collected from the classic Henry seawater intrusion problem give insight into several important aspects of inverse modeling of seawater intrusion problems and effective measurement strategies for estimation of parameters for seawater intrusion. Despite the simplicity of the Henry problem, it embodies the behavior of a typical seawater intrusion...
Authors
E. Sanz, C.I. Voss
The future of hydrogeology
“The Future of Hydrogeology” would seem to be an overly ambitious topic for a theme issue of Hydrogeology Journal or for any other journal. Only a modicum of common sense and experience provides the insight that predicting the future of a science is a task fraught with uncertainty that should be approached with caution and humility. Please be assured that the intent of this issue of the...
Authors
Clifford I. Voss
Three-dimensional variable-density flow simulation of a coastal aquifer in southern Oahu, Hawaii, USA
Three-dimensional modeling of groundwater flow and solute transport in the Pearl Harbor aquifer, southern Oahu, Hawaii, shows that the readjustment of the freshwater–saltwater transition zone takes a long time following changes in pumping, irrigation, or recharge in the aquifer system. It takes about 50 years for the transition zone to move 90% of the distance to its new steady position...
Authors
S. B. Gingerich, C.I. Voss
Hydrogeology Journal in 2004
Hydrogeology Journal continues to flourish. The increase in the size of our yearly volume attests to the success and growing international reputation of the journal. Until 2001, HJ produced about 600 printed pages each year. This number has steadily increased, and in 2005 and 2006, HJ will be allocated 800 pages per year by the publisher. Despite this good news, the journal is having...
Authors
Clifford I. Voss, Perry G. Olcott, Robert Schneider, Christine Watson