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Page 2293, results 57301 - 57325

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Low-flow characteristics of streams in the Rock-Fox River basin, Wisconsin
B. K. Holmstrom
1978, Water-Resources Investigations Report 78-85
Low-flow characteristics of streams in the Rock-Fox River basin, Wis., include estimates of low-flow frequency ad flow duration at 13 gaging stations; low-flow frequency characteristics at 32 low-flow partial-record stations and 78 miscellaneous sites; and a list of base-flow discharge measurements at 244 miscellaneous sites. Equations are provided to estimate...
Empirical model of Skeletonema costatum photosynthetic rate, with applications in the San Francisco Bay estuary
James E. Cloern
1978, Advances in Water Resources (1) 267-274
An empirical model of Skeletonema costatum photosynthetic rate is developed and fit to measurements of photosynthesis selected from the literature. Because the model acknowledges existence of: 1) a light-temperature interaction (by allowing optimum irradiance to vary with temperature), 2) light inhibition, 3) temperature inhibition, and 4) a salinity effect, it accurately estimates...
Selected ground-water data, Bonneville Salt Flats and Pilot Valley, western Utah
Gregory C. Lines
1978, Utah Basic-Data Release 30
This report contains ground-water data collected at wells and springs on the Bonneville Salt Flats and in Pilot Valley, western Utah. Most of the data were collected during a study of the hydrology and surface morphology of these two salt-crust areas during the period July 1975 - June 1977. The...
An automated procedure for the simultaneous determination of specific conductance and pH in natural water samples
D. E. Eradmann, Howard E. Taylor
1978, Analytica Chimica Acta (99) 269-274
An automated, continuous-flow system is utilized to determine specific conductance and pH simultaneously in natural waters. A direct electrometric procedure is used to determine values in the range pH 4–9. The specific conductance measurements are made with an electronically modified, commercially available conductivity meter interfaced to a separate module containing...
Minerals produced during cooling and hydrothermal alteration of ash flow tuff from Yellowstone drill hole Y-5
T. E. C. Keith, L.J.P. Muffler
1978, Journal of Volcanology and Geothermal Research (3) 373-402
A rhyolitic ash-flow tuff in a hydrothermally active area within the Yellowstone caldera was drilled in 1967, and cores were studied to determine the nature and distribution of primary and secondary mineral phases. The rocks have undergone a complex history of crystallization and hydrothermal alteration since their emplacement 600,000 years...
Interpretation of a Landsat image of an unusual flood phenomenon in Australia
Charles J. Robinove
1978, Remote Sensing of Environment (7) 219-225
A Landsat image of part of the flooded area of Cooper Creek, Queensland, Australia, in February 1974, shows large dark areas within the flooded valley. The dark areas are believed to be wet, but unflooded, areas of dark alluvial soil. These striking features, which have not previously been identified on...
Uranium-isotope variations in groundwaters of the Floridan aquifer and Boulder Zone of south Florida
J.B. Cowart, M. I. Kaufman, J.K. Osmond
1978, Journal of Hydrology (36) 161-172
Water samples from four wells from the main Floridan aquifer (300-400 m below mean sea level) in southeast Florida exhibit 234U 233U activity ratios that are significantly lower than the secular equilibrium value of 1.00. Such anomalous values have been observed previously only in waters from sedimentary aquifers in the...
Sea otter predation and community organization in the western Aleutian Island, Alaska
J. E. Estes, N. S. Smith, J. F. Palmisano
1978, Ecology (59) 822-833
Predation by the sea otter (Enhydra lutris) limits epibenthic invertebrates, especially sea urchins (Strongylocentrotus polyacanthus), in turn allowing a luxuriant development of the macroalgal canopy. Where sea otters are abundant, sea urchins are small and scarce in shallow water, and the association of fleshy macroalgae apparently is regulated by competition....
Lower Tertiary laterite on the Iceland-Faeroe Ridge and the Thulean land bridge
T. H. Nilsen
1978, Nature (274) 786-788
CORES of a lower Tertiary lateritic palaeosol resting on basalt were recovered1 from Deep Sea Drilling Project Site 336 (Leg 38) on the north-east flank of the Iceland-Faeroe Ridge (Fig. 1), a major aseismic oceanic ridge that, together with Iceland, forms the Icelandic transverse ridge 2. The transverse ridge extends...
Evaluation of an aerial survey of Pacific walruses
J. A. Estes, James R. Gilbert
1978, Journal of the Fisheries Research Board of Canada (35) 1130-1140
An aerial survey of Pacific walruses (Odobenus rosmarus divergens) was evaluated to determine the reliability of estimates of population abundance. The probability of detecting groups of walruses on the pack ice remained uniform to at least 0.93 km from the flight line, whereas the probability of detection decreased significantly beyond 0.23 km...
Mass transfer and carbon isotope evolution in natural water systems
T.M.L. Wigley, Niel Plummer, F. J. Pearson Jr.
1978, Geochimica et Cosmochimica Acta (42) 1117-1139
This paper presents a theoretical treatment of the evolution of the carbon isotopes C13 and C14 in natural waters and in precipitates which derive from such waters. The effects of an arbitrary number of sources (such as dissolution of carbonate minerals and oxidation of organic material) and sinks (such as...
Developing a state water plan: Ground-water conditions in Utah, spring of 1977
E.L. Bolke, W.N. Jibson, R. W. Mower, A. C. Razem, R.M. Cordova, V.L. Jensen, M. D. ReMillard, G. W. Sandberg, C.T. Sumison, L. R. Herbert
1977, Cooperative Investigations Report 16
This report is the fourteenth in a series of annual reports that describe ground-water conditions in Utah. Reports in this series, prepared cooperatively by the U.S. Geological Survey and the Utah Division of Water Resources, provide data to enable interested parties to keep abreast of changing ground-water conditions.This report, like...
Use of water in Arkansas, 1975
Henry N. Halberg
1977, Water Resources Summary 9
This report contains statistical information relating to water use in Arkansas. The principle categories of water use, other than hydroelectric energy generation, are public supply, self-supplied industrial use, rural domestic and livestock use, irrigation, fish and minnow farming, water for wild life impoundments, and thermoelectric-energy generation. About half...
Water resources of the Weiser River basin, west-central Idaho
H.W. Young, W. A. Harenberg, Harold R. Seitz
1977, Water Information Bulletin 44
The study area comprises about 1,600 square miles (4,100 square kilometers) in west-central Idaho and includes the entire Weiser River basin and small areas both west and south of Weiser outside the basin. The basin is sparsely populated and the economy is chiefly agricultural....
Ground-water resources of Griggs and Steele Counties, North Dakota
Joe S. Downey, C. A. Armstrong
1977, Bulletin 64-3
Griggs and Steele Counties, in east-central North Dakota, are underlain by bedrock of Ordovician, Jurassic, and Cretaceous ages. The Fall River and Lakota Formations of Cretaceous age form the Dakota aquifer. The fractured upper part of the Pierre Formation (shale), also of Cretaceous age, forms another bedrock aquifer. The Dakota...
Hydrologic evaluation of Ashley Valley, northern Uinta basin area, Utah
James W. Hood
1977, Technical Publication 54
The water resources of the northern Uinta Basin, Utah and Colorado, were studied during 1971-74. Ashley Valley was evaluated in slightly greater detail than the general area, in order to assess the general relation of ground- and surface-water supplies. In Ashley Valley , the principal source of both irrigation supply and ground-water...
Seepage study of the Sevier Valley-Piute Canal, Sevier County, Utah
R.W. Cruff
1977, Technical Publication 58
A study of the gains or losses of the Sevier Valley-Piute Canal from near Joseph to near Aurora, Sevier County, Utah, was made to aid in water allocation for the canal system. Four sets of seepage measurements were made in 1976, with the three most representative being used in the...