Clifford I Voss, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 78
Increasing threat of coastal groundwater hazards from sea-level rise in California Increasing threat of coastal groundwater hazards from sea-level rise in California
Projected sea-level rise will raise coastal water tables, resulting in groundwater hazards that threaten shallow infrastructure and coastal ecosystem resilience. Here we model a range of sea-level rise scenarios to assess the responses of water tables across the diverse topography and climates of the California coast. With 1 m of sea-level rise, areas flooded from below are predicted to...
Authors
K.M. Befus, Patrick L. Barnard, Daniel J. Hoover, Juliette Finzi Hart, Clifford I. Voss
Wildfire-initiated talik development exceeds current thaw projections: Observations and models from Alaska's continuous permafrost zone Wildfire-initiated talik development exceeds current thaw projections: Observations and models from Alaska's continuous permafrost zone
As the Arctic warms and wildfire occurrence increases, talik formation in permafrost regions is projected to expand and affect the cycling of water and carbon. Yet, few unified field and modeling studies have examined this process in detail, particularly in areas of continuous permafrost. We address this gap by presenting multimethod, multiseasonal geophysical measurements of permafrost...
Authors
David M. Rey, Michelle A. Walvoord, Burke J. Minsley, Brian A. Ebel, Clifford I. Voss, Kamini Singha
The influence of snow cover, air temperature, and groundwater flow on the active-layer thermal regime of Arctic hillslopes drained by water tracks The influence of snow cover, air temperature, and groundwater flow on the active-layer thermal regime of Arctic hillslopes drained by water tracks
Permafrost in Arctic watersheds limits soil biological activity to a thin, seasonally thawed active layer that contributes water to streams. In many hillslopes, relatively wet drainage features called water tracks have distinct freeze-thaw patterns that affect groundwater flow and storage, and thus the export of heat and solutes to Arctic streams. This study uses groundwater flow and...
Authors
Caitlin R Rushlow, Audrey H Sawyer, Clifford I. Voss, Sarah E Godsey
Water tracks enhance water flow above permafrost in upland Arctic Alaska hillslopes Water tracks enhance water flow above permafrost in upland Arctic Alaska hillslopes
Upland permafrost regions occupy approximately one third of the Arctic landscape. In upland regions, hydrologic fluxes are influenced by water tracks, curvilinear features on hillslopes that preferentially fill with and route water in response to snowmelt and rainfall when the soil above continuous permafrost thaws in the summer. As continued warming of the Arctic may alter hydrologic...
Authors
Sarah G. Evans, Sarah E Godsey, Caitlin R Rushlow, Clifford I. Voss
SUTRA, a model for saturated-unsaturated, variable-density groundwater flow with solute or energy transport—Documentation of generalized boundary conditions, a modified implementation of specified pressures and concentrations or temperatures, and the lake SUTRA, a model for saturated-unsaturated, variable-density groundwater flow with solute or energy transport—Documentation of generalized boundary conditions, a modified implementation of specified pressures and concentrations or temperatures, and the lake
Version 3.0 of the SUTRA groundwater modeling program offers three new capabilities: generalized boundary conditions, a modified implementation of specified pressures and concentrations or temperatures, and lakes. Two new types of “generalized” boundary conditions facilitate simulation of a wide range of hydrologic processes that interact with the groundwater model, such as rivers...
Authors
Alden M. Provost, Clifford I. Voss
Modeling δ18O as an early indicator of regime shift arising from salinity stress in coastal vegetation Modeling δ18O as an early indicator of regime shift arising from salinity stress in coastal vegetation
In many important coastal habitats, a combination of increasing soil salinization due to sea level rise, reduced precipitation and storm surges may induce regime shift from salinity-intolerant glycophytic vegetation to salinity-tolerant halophytic species. Early detection of regime shift due to salinity stress in vegetation may facilitate conservation efforts. It has been shown that the...
Authors
Su Yean Teh, Hock Lye Koh, Donald L. DeAngelis, Clifford I. Voss, Leonel da Silveira Lobo Sternberg
Science and Products
Filter Total Items: 78
Increasing threat of coastal groundwater hazards from sea-level rise in California Increasing threat of coastal groundwater hazards from sea-level rise in California
Projected sea-level rise will raise coastal water tables, resulting in groundwater hazards that threaten shallow infrastructure and coastal ecosystem resilience. Here we model a range of sea-level rise scenarios to assess the responses of water tables across the diverse topography and climates of the California coast. With 1 m of sea-level rise, areas flooded from below are predicted to...
Authors
K.M. Befus, Patrick L. Barnard, Daniel J. Hoover, Juliette Finzi Hart, Clifford I. Voss
Wildfire-initiated talik development exceeds current thaw projections: Observations and models from Alaska's continuous permafrost zone Wildfire-initiated talik development exceeds current thaw projections: Observations and models from Alaska's continuous permafrost zone
As the Arctic warms and wildfire occurrence increases, talik formation in permafrost regions is projected to expand and affect the cycling of water and carbon. Yet, few unified field and modeling studies have examined this process in detail, particularly in areas of continuous permafrost. We address this gap by presenting multimethod, multiseasonal geophysical measurements of permafrost...
Authors
David M. Rey, Michelle A. Walvoord, Burke J. Minsley, Brian A. Ebel, Clifford I. Voss, Kamini Singha
The influence of snow cover, air temperature, and groundwater flow on the active-layer thermal regime of Arctic hillslopes drained by water tracks The influence of snow cover, air temperature, and groundwater flow on the active-layer thermal regime of Arctic hillslopes drained by water tracks
Permafrost in Arctic watersheds limits soil biological activity to a thin, seasonally thawed active layer that contributes water to streams. In many hillslopes, relatively wet drainage features called water tracks have distinct freeze-thaw patterns that affect groundwater flow and storage, and thus the export of heat and solutes to Arctic streams. This study uses groundwater flow and...
Authors
Caitlin R Rushlow, Audrey H Sawyer, Clifford I. Voss, Sarah E Godsey
Water tracks enhance water flow above permafrost in upland Arctic Alaska hillslopes Water tracks enhance water flow above permafrost in upland Arctic Alaska hillslopes
Upland permafrost regions occupy approximately one third of the Arctic landscape. In upland regions, hydrologic fluxes are influenced by water tracks, curvilinear features on hillslopes that preferentially fill with and route water in response to snowmelt and rainfall when the soil above continuous permafrost thaws in the summer. As continued warming of the Arctic may alter hydrologic...
Authors
Sarah G. Evans, Sarah E Godsey, Caitlin R Rushlow, Clifford I. Voss
SUTRA, a model for saturated-unsaturated, variable-density groundwater flow with solute or energy transport—Documentation of generalized boundary conditions, a modified implementation of specified pressures and concentrations or temperatures, and the lake SUTRA, a model for saturated-unsaturated, variable-density groundwater flow with solute or energy transport—Documentation of generalized boundary conditions, a modified implementation of specified pressures and concentrations or temperatures, and the lake
Version 3.0 of the SUTRA groundwater modeling program offers three new capabilities: generalized boundary conditions, a modified implementation of specified pressures and concentrations or temperatures, and lakes. Two new types of “generalized” boundary conditions facilitate simulation of a wide range of hydrologic processes that interact with the groundwater model, such as rivers...
Authors
Alden M. Provost, Clifford I. Voss
Modeling δ18O as an early indicator of regime shift arising from salinity stress in coastal vegetation Modeling δ18O as an early indicator of regime shift arising from salinity stress in coastal vegetation
In many important coastal habitats, a combination of increasing soil salinization due to sea level rise, reduced precipitation and storm surges may induce regime shift from salinity-intolerant glycophytic vegetation to salinity-tolerant halophytic species. Early detection of regime shift due to salinity stress in vegetation may facilitate conservation efforts. It has been shown that the...
Authors
Su Yean Teh, Hock Lye Koh, Donald L. DeAngelis, Clifford I. Voss, Leonel da Silveira Lobo Sternberg