Robert Holmes, Jr., Ph.D., P.E., F.ASCE, F.EWRI, D.WRE (Former Employee)
Science and Products
Filter Total Items: 101
Particle velocity interpolation in block-centered finite difference groundwater flow models
A block-centered, finite difference model of two-dimensional groundwater flow yields velocity values at the midpoints of interfaces between adjacent blocks. Method of characteristics, random walk and particle-tracking models of solute transport require velocities at arbitrary particle locations within the finite difference grid. Particle path lines and travel times are sensitive to the spatial int
Authors
Daniel J. Goode
Apparent dispersion in transient groundwater flow
This paper investigates the effects of large-scale temporal velocity fluctuations, particularly changes in the direction of flow, on solute spreading in a two-dimensional aquifer. Relations for apparent longitudinal and transverse dispersivity are developed through an analytical solution for dispersion in a fluctuating, quasi-steady uniform flow field, in which storativity is zero. For transient f
Authors
Daniel J. Goode, Leonard F. Konikow
Mudflow rheology in a vertically rotating flume
Joint research by the U.S. Geological Survey and the University of Missouri-Rolla currently (1990) is being conducted on a 3.05 meters in diameter vertically rotating flume used to simulate mudflows under steady-state conditions. Observed mudflow simulations indicate flow patterns in the flume are similar to those occurring in natural mudflows. Variables such as mean and surface velocity, depth, a
Authors
Robert R. Holmes, Jerome A. Westphal, Harvey E. Jobson
Groundwater velocity magnitude in radionuclide transport calculations
Analytical solutions have been developed for many conceptual models of solute transport in groundwater (Bear 1979). Although these models usually rely on assumptions too restrictive for accurate description of actual field situations, they are useful in understanding groundwater transport and in evaluating the relative importance of the subsurface processes affecting transport. In addition, these
Authors
Daniel J. Goode
Ground-water contamination near a uranium tailings disposal site in Colorado
Contaminants from uranium tailings disposed of at an active mill in Colorado have seeped into the shallow ground water onsite. This ground water discharges into the Arkansas River Valley through a superposed stream channel cut in the resistant sandstone ridge at the edge of a synclinal basin. In the river valley, seasonal surface-water irrigation has a significant impact on hydrodynamics. Water le
Authors
Daniel J. Goode, Russell J. Wilder
Non-USGS Publications**
Watson, Chester C., Holmes, Jr., R.R., and Biedenharn, D.S..,2013, Mississippi River Streamflow Measurement Techniques at St. Louis, Missouri, Journal of Hydraulic Engineering, 139 (10), pp 1062-1070
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 101
Particle velocity interpolation in block-centered finite difference groundwater flow models
A block-centered, finite difference model of two-dimensional groundwater flow yields velocity values at the midpoints of interfaces between adjacent blocks. Method of characteristics, random walk and particle-tracking models of solute transport require velocities at arbitrary particle locations within the finite difference grid. Particle path lines and travel times are sensitive to the spatial int
Authors
Daniel J. Goode
Apparent dispersion in transient groundwater flow
This paper investigates the effects of large-scale temporal velocity fluctuations, particularly changes in the direction of flow, on solute spreading in a two-dimensional aquifer. Relations for apparent longitudinal and transverse dispersivity are developed through an analytical solution for dispersion in a fluctuating, quasi-steady uniform flow field, in which storativity is zero. For transient f
Authors
Daniel J. Goode, Leonard F. Konikow
Mudflow rheology in a vertically rotating flume
Joint research by the U.S. Geological Survey and the University of Missouri-Rolla currently (1990) is being conducted on a 3.05 meters in diameter vertically rotating flume used to simulate mudflows under steady-state conditions. Observed mudflow simulations indicate flow patterns in the flume are similar to those occurring in natural mudflows. Variables such as mean and surface velocity, depth, a
Authors
Robert R. Holmes, Jerome A. Westphal, Harvey E. Jobson
Groundwater velocity magnitude in radionuclide transport calculations
Analytical solutions have been developed for many conceptual models of solute transport in groundwater (Bear 1979). Although these models usually rely on assumptions too restrictive for accurate description of actual field situations, they are useful in understanding groundwater transport and in evaluating the relative importance of the subsurface processes affecting transport. In addition, these
Authors
Daniel J. Goode
Ground-water contamination near a uranium tailings disposal site in Colorado
Contaminants from uranium tailings disposed of at an active mill in Colorado have seeped into the shallow ground water onsite. This ground water discharges into the Arkansas River Valley through a superposed stream channel cut in the resistant sandstone ridge at the edge of a synclinal basin. In the river valley, seasonal surface-water irrigation has a significant impact on hydrodynamics. Water le
Authors
Daniel J. Goode, Russell J. Wilder
Non-USGS Publications**
Watson, Chester C., Holmes, Jr., R.R., and Biedenharn, D.S..,2013, Mississippi River Streamflow Measurement Techniques at St. Louis, Missouri, Journal of Hydraulic Engineering, 139 (10), pp 1062-1070
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.