Fate and transport of bacteria injected into aquifers
Ronald W. Harvey
1993, Current Opinion in Biotechnology (4) 312-317
Advances in our understanding of the fate and transport of bacteria introduced into aquifers, including the potential use of genetically engineered bacteria for biorestoration, are highlighted by new findings in the following areas: modeling of bacterial attachment during transport through porous media, the long-term survival of a chlorobenzoate-degrading bacterium injected...
Simulation of fluid distributions observed at a crude oil spill site incorporating hysteresis, oil entrapment, and spatial variability of hydraulic properties
H.I. Essaid, W.N. Herkelrath, K.M. Hess
1993, Water Resources Research (29) 1753-1770
Subsurface oil, water, and air saturation distributions were determined using 146 samples collected from seven boreholes along a 120-m transect at a crude oil spill site near Bemidji, Minnesota. The field data, collected 10 years after the spill, show a clearly defined oil body that has an oil saturation distribution...
Use of output from high‐resolution atmospheric models in landscape‐scale hydrologic models: An assessment
S. W. Hostetler, F. Giorgi
1993, Water Resources Research (29) 1685-1695
In this paper we investigate the feasibility of coupling regional climate models (RCMs) with landscape‐scale hydrologic models (LSHMs) for studies of the effects of climate on hydrologic systems. The RCM used is the National Center for Atmospheric Research/Pennsylvania State University mesoscale model (MM4). Output from two year‐round simulations (1983 and...
Transport and accumulation of radionuclides and stable elements in a Missouri River Reservoir
Edward Callender, John A. Robbins
1993, Water Resources Research (29) 1787-1804
Several long sediment cores from the Cheyenne River Embayment of Lake Oahe, a 250-km-long Missouri River reservoir in South Dakota, have been analyzed for radionuclides and stable elements. The combination of fine-scale sampling and rapid sedimentation produces radionuclide distributions that can be used to estimate the detailed chronology of particle...
A spatial simulation model of hydrology and vegetation dynamics in semi-permanent prairie wetlands
Karen A. Poiani, W. Carter Johnson
1993, Ecological Applications (3) 279-293
The objective of this study was to construct a spatial simulation model of the vegetation dynamics in semi-permanent prairie wetlands. A hydrologic submodel estimated water levels based on precipitation, runoff, and potential evapotranspiration. A vegetation submodel calculated the amount and distribution of emergent cover and open water using a geographic...
Comparison of Penman-Monteith, Shuttleworth-Wallace, and modified Priestley-Taylor evapotranspiration models for wildland vegetation in semiarid rangeland
David I. Stannard
1993, Water Resources Research (29) 1379-1392
Eddy correlation measurements of sensible and latent heat flux are used with measurements of net radiation, soil heat flux, and other micrometeorological variables to develop the Penman-Monteith, Shuttleworth-Wallace, and modified Priestley-Taylor evapotranspiration models for use in a sparsely vegetated, semiarid rangeland. The Penman-Monteith model, a one-component model designed for use...
Sampling colloids and colloid-associated contaminants in ground water
Debera A. Backhus, Joseph N. Ryan, Daniel M. Groher, John K. MacFarlane, Philip M. Gschwend
1993, Groundwater (31) 466-479
It has recently been recognized that mobile colloids may affect the transport of contaminants in ground water. To determine the significance of this process, knowledge of both the total mobile load (dissolved + colloid-associated) and the dissolved concentration of a ground-water contaminant must be obtained. Additional information regarding mobile colloid...
Dynamic land surface/atmospheric parameterization at different spatial scales in the Colorado Rocky Mountains
Jill Baron, R. Pielke, B. Parton, L. Band, S. W. Running
1993, Book, Proceedings of Workshop on the Use of Hydrological Models for Evaluating the Impacts of Climate Change in Snowmelt Water Supply Basins
No abstract available....
Hydrograph characteristics relevant to the establishment and growth of western riparian vegetation
M. L. Scott, M. A. Wondzell, Gregor T. Auble
1993, Book, Proceedings of the Thirteenth Annual American Geophysical Union Hydrology Days
No abstract available....
Sensitivity of the U.S. Fish and Wildlife Service's stream network temperature model
J. M. Bartholow
1993, Book, Proceedings of the Thirteenth Annual American Geophysical Union Hydrology Days
No abstract available....
Wetland modeling and information needs at Stillwater National Wildlife Refuge
David B. Hamilton, Gregor T. Auble
1993, Report, Results of a workshop sponsored by Division on Wildlife Refuges and Wildlife, Region 1
The marshes in and around Stillwater National Wildlife Refuge (the Refuge) are extremely dynamic; expanding and contracting in size both seasonally, due to runoff and subsequent evapotranspiration, and over longer periods, due to climatic variation. The dynamic nature of these marshes results in a diversity of wetland habitats, which...
Restoration of lowland streams: an introduction
L.L. Osborne, P.B. Bayley, L.W.G. Higler, B. Statzner, F. Triska, T. Moth Iverson
1993, Freshwater Biology (29) 187-194
This paper introduces the Lowland Streams Restoration Workshop that was held in Lund, Sweden in August 1991.Attenders at the Workshop participated in working groups which discussed and reported on the state of knowledge of stream restoration and identified critical areas of information need. Currently, most restoration efforts are emission‐orientated (i.e....
Confirmation of rate-dependent behavior in water retention during drainage in nonswelling porous materials
Jim Constantz
1993, Water Resources Research (29) 1331-1334
In the water retention process in porous material, changes in water content are assumed to be independent of the rate at which the matric potential varies. Periodically, researchers have presented results that do not support this assumption, indicating that water retention may be rate-dependent under certain conditions. In the present...
Differentiation of volcanic ash-fall and water-borne detrital layers in the Eocene Senakin coal bed, Tanjung Formation, Indonesia
Leslie F. Ruppert, T.A. Moore
1993, Organic Geochemistry (20) 233-247
The Sangsang deposit of the Eocene Senakin coal bed, Tanjung Formation, southeastern Kalimantan, Indonesia, contains 11 layers, which are thin (<5 cm) and high in ash (> 70%). These layers are characterized by their pelitic macroscopic texture. Examination of eight of the layers by scanning-electron microscopy, energy-dispersive X-ray, and X-ray...
Hydrologic budget and nitrogen distribution for an agricultural study plot in claypan soil and glacial till near Centralia, Mo.--May 1991 to May 1992
Brian P. Kelly, L.N. Plummer
1993, Book chapter, Proceedings from the 3rd annual Missouri water quality conference
No abstract available. ...
Understanding the toxicity of contaminants in sediments: beyond the bioassay-based paradigm
Samuel N. Luoma, James L. Carter
1993, Environmental Toxicology and Chemistry (12) 793-796
No abstract available....
Options for water-level control in developed wetlands
J. R. Kelley Jr., M. K. Laubhan, F. A. Reid, J. S. Wortham, L. H. Fredrickson
1993, Book chapter, Waterfowl management handbook
Wetland habitats in the United States currently are lost at a rate of 260,000 acres/year (105,218 ha/year). Consequently, water birds concentrate in fewer and smaller areas. Such concentrations may deplete food supplies and influence behavior, physiology, and survival. Continued losses increase the importance of sound management of...
Understanding coupled climatic, hydrological, and ecosystem responses to global climate change in the Colorado Rockies biogeographical area
T. J. Stohlgren, Jill Baron, Timothy G.F. Kittel
1993, Book, Proceedings of the George Wright Society Conference on Science and Resource Management in National Parks
No abstract available....
Surface water chemistry and hydrology of two subalpine watersheds in Rocky Mountain National Park, Colorado
J. K. Sueker
1993, Eos, Transactions, American Geophysical Union (74) 266-268
No abstract available....
Aspects of the biogeochemistry of methane in Mono Lake and the Mono Basin of California
Ronald S. Oremland, Laurence G. Miller, Charles Colbertson, S.W. Robinson, Richard L. Smith, Derek R. Lovley, Michael J. Whiticar, G. King, Ronald P. Kiene, Niels Iversen, Melinda Sargent
R. Oremland, editor(s)
1993, Book chapter, Biogeochemistry of global change
Above-ambient levels of methane and higher hydrocarbons were detected in the atmosphere of the Mono Basin. These gases emanated from several different sources, including natural gas seeps (thermogenic and biogenic), and methanogenic activity in sediments. Seeps were distributed over nearly 33% of the lake bottom and were also present...
Geochemical models
David L. Parkhurst, L.N. Plummer
William M. Alley, editor(s)
1993, Book chapter, Regional ground-water quality
No abstract available. ...
Natural radionuclides
D. Kirk Nordstrom, Richard B. Wanty
W.M. Alley, editor(s)
1993, Book chapter, Regional ground-water quality
No abstract available....
Limits on quantitative descriptions of biocolloid mobility in contaminated groundwater
Ronald W. Harvey, E.J. Bouwer
J. McCarthy, F.J. Wobber, editor(s)
1993, Book chapter, Manipulation of groundwater: Colloids for environmental restoration
No abstract available. ...
Environmental tracers for age dating young ground water
L.N. Plummer, R. L. Michel, E.M. Thurman, Pierre D. Glynn
1993, Book chapter, Regional ground-water quality
No abstract available. ...
Physical transport influencing biogeochemistry within the stream catchment continuum
Kenneth E. Bencala, John H. Duff, Judson W. Harvey, A.P. Jackman, F.J. Triska
A.J. Jakeman, M. Beck, J.J. McAleer, editor(s)
1993, Book chapter, Modelling change in environmental systems
No abstract available. ...
