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in subjects: "Lakes"

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Microfaunal evidence of age and depositional environments of the Cerro Prieto section (Plio-Pleistocene), Baja California, Mexico

Microfossils including benthic and planktic foraminifera, ostracodes, calcareous algae, fish skeletal material, and fragments of pelecypods were found in 14 core samples from depths of 185 to 1952 m in the Cerro Prieto geothermal field, providing evidence of both the age and depositional history of sediments comprising the 3000-m-thick Pliocene and Pleistocene section in this area. Ostracodes of brackish water and marine origin constitute the most common microfossils present in this sequence oc… more

Date: January 1, 1982

Creator: Ingle, J.C. Jr.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Predicting aquatic macrophyte modeling of a new freshwater lake using remote sensing

Par Pond and L Lake are reservoirs on the Savannah River Site in South Carolina. Beds of aquatic macrophytes (primarily cattail and waterlilies) exist in Par Pond and are now beginning to develop in L Lake. Biophysical knowledge about Par Pond was used to develop environmental constraint criteria' to predict the future spatial distribution of aquatic macrophytes in L Lake. The L Lake biophysical data were placed in a 5 {times} 5 m raster geographic information system (GIS) and analyzed using Bo… more

Date: January 1, 1992

Creator: Jensen, J. R.; Narumalani, S.; Weatherbee, O.; Morris, K. S., Jr. & Mackey, H. E., Jr.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Water assessment report, section 13(b)

An assessment is presented of water requirements and water supply availability for a proposed Geothermal Binary Demonstration Electric Generation Project near Heber, California. The following topics are discussed: principal findings, project description, water supply and availability, and effects of the project. (MHR)

Date: September 1, 1980

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Isolation of pathogenic Naegleria from artificially heated waters

Investigations were undertaken to determine whether heated waters facilitate the proliferation of free-living amoeba that cause primary amoebic meningoencephalitis. Water samples were taken close to the discharges of power plants situated on lakes or rivers in Florida and Texas and from cooling towers in Tennessee. The water temperatures ranged from 29 to 42/sup 0/C. Water samples were also taken from several lakes in Florida and Texas without associated power plants. The water temperatures of … more

Date: January 1, 1977

Creator: Tyndall, R L; Willaert, E; Stevens, A R & Coutant, C C

Item Type: Article

Partner: UNT Libraries Government Documents Department

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The 1990 Clean Air Act Amendments and the Great Lakes Economy: Challenges and Opportunities

This paper deals with the market for SO{sub 2} emission allowances over time and electric utility compliance choices. For currently high emitting plants ( > 2.5 lb SO{sub 2}/MMBtu), the 1990 Clean Air Act Amendments (CAAA) provide for about twice as many SO{sub 2} allowances to be issued per year in Phase 1 (1995--1999) than in Phase 2. Also, considering the scrubber incentives in Phase 1, there is likely to be substantial emission banking for use in Phase 2. Allowance prices are expected to in… more

Date: January 1, 1991

Creator: Hanson, D.; Molburg, J.; Pandola, G.; Taxon, T.; Lurie, G.; Fisher, R. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Relative availability of selected trace elements from coal fly ash and Lake Michigan sediment

The concentration of greater than 1 ..mu..m coal fly ash particles in Lake Michigan surface waters was found to be 10/sup 5/ to 10/sup 6/ per liter. With an expected residence time of one year, this concentration implies a flux to the sediment of 10/sup 6/ to 10/sup 7/ particles/cm/sup 2//yr, or about 10/sup -6/ to 10/sup -5/ g/cm/sup 2//yr. The release of trace elements from fly ash and sediment has been studied using Chelex-100 resin to simulate leaching at high dilutions in natural media. Mn… more

Date: January 1, 1977

Creator: Alberts, J.J.; Burger, J.; Kalhorn, S.; Seils, C. & Tisue, T.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Dissolved organic matter and lake metabolism. Technical progress report, 1 July 1979-30 June 1980

Progress in research to evaluate the impact of utilization of fossil fuels on surface water is reported. Analyses of regulatory mechanisms of growth and rates of carbon cycling center on evaluation of quantitative control interactions among the microflora of the pelagial zones of several lakes of progressively greater eutrophy, littoral photosynthetic producer-decomposer complex, and allochthonous inorganic-organic influxes and their biotic processing. The underlying thesis is that quantificati… more

Date: January 1, 1980

Creator: Wetzel, R.G.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Advances in materials science, Metals and Ceramics Division. Triannual progress report, October 1979-January 1980

Progress is summarized concerning magnetic fusion energy materials, laser fusion energy, aluminium-air battery and vehicle, geothermal research, oil-shale research, nuclear waste management, office of basic energy sciences research, and materials research notes. (FS)

Date: March 31, 1980

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Limnological aspects of acid precipitation

Lakes and streams in parts of Norway, Sweden, Canada, and the United States are being severely impacted by acidic precipitation. Scientists meeting at Sagamore, New York, agreed that this is the most serious limnological problem today. The factor responsible for determining the sensitivity of surface waters to acidification is alkalinity derived by weathering of soils and bedrock in the watershed. Acidification, defined as a reduction in alkalinity, can be quantified if preacidification alkalin… more

Date: January 1, 1978

Creator: Hendrey, G.R. (ed.)

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Plutonium and Americium Concentration Along Fresh-Water Food Chains of the Great Lakes, U. S. A. Progress Report, July 1976--September 30, 1977

The primary purpose of studying the biogeochemical behavior of transuranic radionuclides in large freshwater lakes began with studies of the distribution of these radionuclides, essentially introduced from the fallout of atmospheric nuclear weapons tests, in Lake Ontario. The recognition that an additional source of supply of these nuclides to Lake Ontario (subsequent to their release into Lake Erie) existed in the form of leakage from the Nuclear Fuel Services reprocessing plant at Springville… more

Date: January 1, 1977

Creator: Bowen, V. T.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Aeromomas in a thermally stressed lake. [Survival of fish pathogenic bacteria in Par Pond]

No Description Available.

Date: January 1, 1975

Creator: Fliermans, C.B.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Regional studies: Lake Michigan energy forecasts. The econometric approach to electricity supply and demand: review and analysis

No Description Available.

Date: May 1, 1974

Creator: Asbury, J.G.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Quantification and reduction of the uncertainty in mass balance models by Monte Carlo analysis of prior data

The general objective of this workshop is to investigate and discuss methods by which uncertainties in mass balance models for toxics in the Great Lakes may be reduced. As described by the workshop prospectus, this paper is focused on problems of reducing (and quantifying) uncertainty as they relate to in situ field observations/system response measurements for the establishment of initial conditions, boundary conditions, calibration/confirmation data sets, and model post-audit data sets.'' I h… more

Date: January 1, 1991

Creator: Lesht, B.M.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Benthic plant communities in acidic Lake Colden, New York: Sphagnum and the algal mat

Lake Colden, in the central Adirondack Mountains of New York State is botanically similar to acidified lakes in Sweden. Acidification of some Swedish lakes has been associated with an expansion of Sphagnum, primarily in shallow, sheltered littoral areas but also to depths of 18m. During a brief botanical survey on 24-25 July 1979, we observed a dense meadow of Sphagnum pylaesii around much of the shoreline of Lake Colden. Plant community composition was determined by a visual estimate of cover … more

Date: March 1, 1980

Creator: Hendrey, G R & Vertucci, J A

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Nocturnal drainage wind characteristics in two converging air sheds

During the short experimental period in the Grants Basin of Northeastern New Mexico a survey was conducted on the complex meteorology of this area. Emphasis was placed on the nocturnal drainage flow because of the potential hazards to the populated areas of Milan and Grants from the effluents of the uranium mining and milling operation in this area. This investigation has shown that the nocturnal drainage flow patterns agree with the winds predicted on the basis of the complex terrain of the ar… more

Date: January 1, 1980

Creator: Gedayloo, T.; Clements, W.E.; Barr, S. & Archuleta, J.A.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Paleomagnetism of the Quaternary Cerro Prieto, Crater Elegante, and Salton Buttes volcanic domes in the northern part of the Gulf of California rhombochasm

Deviating thermomagnetic directions in volcanics representing the second and fifth or sixth pulse of volcanism suggest that the Cerro Prieto volcano originated about 110,000 years B.P. and continued to be active intermittently until about 10,000 years ago.

Date: February 1, 1980

Creator: de Boer, J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Particle measurement and brine chemistry at the Salton Sea Deep Well

The Advanced Brine Chemistry Project, a part of the US Department of Energy's Geothermal Energy Program, is addressing operating problems associated with scaling and corrosion at geothermal power plants. Under this project, Pacific Northwest Laboratory conducted a series of tests at the Salton Sea Deep Well, which has one of the highest solids contents in the world. The purpose of the tests was to evaluate monitoring instrumentation under field conditions and relate particulate formation to the… more

Date: September 1, 1991

Creator: Robertus, R.J.; Kindle, C.H.; Sullivan, R.G. & Shannon, D.W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Comparative assessment of five potential sites for hydrothermal-magma systems: energy transport

A comparative assessment of five sites is being prepared as part of a Continental Scientific Drilling Program (CSDP) review of thermal regimes for the purpose of scoping areas for future research and drilling activities. This background report: discusses the various energy transport processes likely to be encountered in a hydrothermal-magma system, reviews related literature, discusses research and field data needs, and reviews the sites from an energy transport viewpoint. At least three major … more

Date: September 1, 1980

Creator: Hardee, H.C.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Comparative assessment of five potential sites for hydrothermal magma systems: geochemistry

A brief discussion is given of the geochemical objectives and questions that must be addressed in such an evaluation. A summary of the currently published literature that is pertinent in answering these questions is presented for each of the five areas: The Geysers-Clear Lake region, Long Valley, Rio Grand Rift, Roosevelt Hot Springs, and the Salton Trough. The major geochemical processes associated with proposed hydrothermal sites are categorized into three groups for presentation: geochemistr… more

Date: August 1, 1980

Creator: White, A.F.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Paleoclimatic significance of lake level fluctuations in the Lahontan Basin. [Pyramid Lake, Nevada]

An energy flux balance model has been developed which treats evaporation as a function of air temperature, surface water temperature, precipitable water aloft, the amount, height, and type of sky cover, and the optical air mass. The model has been used to estimate the mean historical evaporation rate for Pyramid Lake, Nevada, using as input climatic data from the Reno area averaged over the period 1950 to 1975. Estimated and measured values of the mean annual evaporation rate were found to be i… more

Date: August 1, 1980

Creator: Benson, L. V.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Phytoplankton and physical-chemical conditions in selected rivers and the coastal zone of Lake Michigan, 1972

A very large data set was obtained on the nearshore environment of Lake Michigan during 1972. The data set is probably unique in that samples were collected and analyzed for a number of physical-chemical parameters and for phytoplankton standing crop and species composition. Phytoplankton identified during the study totaled 431 taxa of which 306 were diatoms, which serves to illustrate the magnitude of available data. Results are presented for eleven different transects sampled in April and for… more

Date: January 1, 1980

Creator: Schelske, C.L.; Feldt, L.E. & Simmons, M.S.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Temporal and spatial trends in the chemistry of acidified lakes under ice cover

When preparing materials budgets for watersheds containing lakes, the spatial and temporal interchange between large compartments within the whole system must be considered. This paper addresses the lakes of the Integrated Lake-Watershed Acidification Study (ILWAS) and their role in our mass balance calculations for the period of winter stratification of 1978-1979, and presents data on lake metabolism.

Date: March 1, 1980

Creator: Hendrey, G. R.; Galloway, J. N. & Schofield, C. L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Monitoring and Evaluation of Smolt Migration in the Columbia River Basin : Volume V : Evaluation of the 1999 Predictions of the Run-Timing of Wild Migrant Yearling and Subyearling Chinook Salmon and Steelhead Trout, and Hatchery Sockeye Salmon in the Snake River Basin using Program RealTime.

Program RealTime provided tracking and forecasting of the 1999 inseason outmigration via the internet for stocks of wild PIT-tagged spring/summer chinook salmon. These stocks were ESUs from sixteen release sites above Lower Granite dam, including Bear Valley Creek, Big Creek, Cape Horn Creek, Catherine Creek, Elk Creek, Herd Creek, Imnaha River, Lake Creek, Loon Creek, Lostine River, Marsh Creek, Minam River, South Fork Salmon River, and Secesh River, Sulfur Creek and Valley Creek. Forecasts we… more

Date: July 1, 1998

Creator: Burgess, Caitlin

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Aerial Measurements of Convection Cell Elements in Heated Lakes

Power plant-heated lakes are characterized by a temperature gradient in the thermal plume originating at the discharge of the power plant and terminating at the water intake. The maximum water temperature discharged by the power plant into the lake depends on the power generated at the facility and environmental regulations on the temperature of the lake. Besides the observed thermal plume, cloud-like thermal cells (convection cell elements) are also observed on the water surface. The size, sha… more

Date: December 19, 2007

Creator: Villa-Aleman, E.; Saleem Salaymeh, S.; Timothy Brown, T.; Alfred Garrett, A.; Malcolm Pendergast, M. & Linda Nichols, L.

Item Type: Article

Partner: UNT Libraries Government Documents Department