Optimization of electrothermal atomization parameters for simultaneous multielement atomic absorption spectrometry
J. M. Harnly, Jean S. Kane
1984, Analytical Chemistry (56) 48-54
The effect of the acid matrix, the measurement mode (height or area), the atomizer surface (unpyrolyzed and pyrolyzed graphite), the atomization mode (from the wall or from a platform), and the atomization temperature on the simultaneous electrothermal atomization of Co, Cr, Cu, Fe, Mn, Mo, Ni, V, and Zn was...
Isolation of organic acids from large volumes of water by adsorption chromatography
George R. Aiken
1984, Book, National Meeting - American Chemical Society, Division of Environmental Chemistry
The concentrations of dissolved organic carbon from most natural waters ranges from 1 to 20 milligrams carbon per liter, of which approximately 75 percent are organic acids. These acids can be chromatographically fractionated into hydrophobic organic acids, such as humic substances, and hydrophilic organic acids. To effectively study any of...
Chemical determination of particulate nitrogen in San Francisco Bay. A comparison of two estimates
S.W. Hager, D.D. Harmon
1984, Estuarine, Coastal and Shelf Science (19) 181-191
Particulate nitrogen was measured by both the ultra-violet light-catalyzed peroxide method and the high temperature combustion method. The difference between values obtained with the two methods (combustion minus UV) was found to be linearly correlated with the concentration of total suspended particulate matter (SPM) in the sample. The slope of...
Glacier mass balance and runoff research in the U.S.A.
L.R. Mayo
1984, Geografiska Annaler, Series A (66 A) 215-227
Research on glacier mass balance began in the U.S.A. about 50 years ago. More complete studies of climate, snow and ice balance, and the hydrology of glaciers were initiated for the IGY in 1957 and the IHD in 1966. Investigations included the magnitude and geographic distribution of normal...
Dendrogeomorphic evidence of debris flow frequency and magnitude at Mount Shasta, California
Cliff R. Hupp
1984, Environmental Geology and Water Sciences (6) 121-128
Debris-flow deposits and woody vegetation adjacent to and growing within the channels of Whitney, Bolam, Mud, Ash, and Panthe creeks provide a 300-year record of debris-flow frequency at Mount Shasta Dendrochronologic (tree-ring) dating methods for the debris flows proved consistent with available documented records of debris flows Nine debris flows...
Field and laboratory analyses of water from the Columbia aquifer in Eastern Maryland
L. J. Bachman
1984, Groundwater (22) 460-469
Field and laboratory analyses of pH, alkalinity, and specific conductance from water samples collected from the Columbia aquifer on the Delmarva Peninsula in eastern Maryland were compared to determine if laboratory analyses could be used for making regional water-quality interpretations.On the basis of 170 field...
Sources of nitrate in ground water in a sewered housing development, Central Long Island, New York
W.J. Flipse Jr., B. G. Katz, J.B. Lindner, R. Markel
1984, Groundwater (22) 418-426
Nitrate concentrations in ground water on Long Island, New York, have increased markedly in the last 30 years. A significant amount of this increase has been attributed to lawn and garden fertilizers in addition to cesspool and septic-tank discharges. The increase in nitrate concentration is...
Relationship between quantity and quality of storm runoff and various watershed characteristics in Minnesota, USA
Rob G. Brown
1984, Conference Paper
Watersheds are rural areas undergoing urbanization with current urban land use comprising 4 to 58 percent of the watershed area. The quantity and quality of storm runoff in the watersheds was tested for correlations (significance level of 0. 05) with various land-surface features and landuse characteristics. Quantity of storm runoff...
EFFECTS OF RESOURCE DEVELOPMENT ON WATER QUALITY IN THE BIG SOUTH FORK NATIONAL RIVER AND RECREATION AREA, TENNESSEE AND KENTUCKY.
William P. Carey
Schreiber David L., editor(s)
1984, Conference Paper
The South Fork Cumberland River begins in Tennessee at the confluence of the New River and Clear Fork. Strip mining for coal in the New River basin has been ongoing for decades with little reclamation prior to 1977. Water-quality data show that suspended-sediment and dissolved-constituent loads from the New River...
Floods of April 18, 1983 on St. Thomas and St. John, U.S. Virgin Islands
R. E. Curtis Jr.
1984, Water-Resources Investigations Report 84-4184
The U.S. Virgin Islands of St. Thomas and St. John experienced the most intense rainfall event in recorded history on April 18, 1983. Rainfall intensities of 2.5 inches per hour, and more than 16 inches in 18 hours were recorded. Almost instantaneous runoff caused widespread flooding near the coastlines of...
Analytical results and sample locality map of stream-sediment, heavy-mineral-concentrate, rock, and water samples from the Chemehuevi Mountains Wilderness Study Area (CDCA-310), San Bernardino County, California
R.T. Hopkins, J. P. Fox, J.C. Antweiler, W. L. Campbell
1984, Open-File Report 84-261
No abstract available....
Mineral resources of the Tracy Arm-Fords Terror Wilderness Study Area and vicinity, Alaska
Water Resources Division, U.S. Geological Survey
1984, Bulletin 1525
No abstract available....
STRUCTURAL AND HYDROGEOLOGIC APPLICATIONS OF REMOTE SENSING DATA, EASTERN YUCATAN PENINSULA, MEXICO.
C. Scott Southworth
Beck Barry F., editor(s)
1984, Conference Paper
Landsat and Seasat satellite images and aerial photographs of eastern Yucatan Peninsula, Mexico, were analyzed to delineate geologic controls of ground water. Significant interpretation results include the delineation of linear topographic swales, interpreted as fractures, extending more than 50 km along strike from the previously known limit of the Holbox...
Potential effects of surface coal mining on the hydrology of the West Otter area, Ashland and Birney-Broadus coal fields, southeastern Montana
N. E. McClymonds
1984, Water-Resources Investigations Report 84-4087
Shallow aquifers exist primarily within the Tongue River Member of the Paleocene Fort Union Formation and within valley alluvium. Sandstone beds are the principal aquifers for domestic supply and livestock watering, with the Knobloch coal bed being a secondary source of supply. Surface-water resources consist principally of perennial flow in...
The quality of ground water in the principal aquifers of northeastern-north central Washington
J.C. Ebbert
1984, Water-Resources Investigations Report 83-4102
In 1979 the quality of ground water in major aquifers in northeastern-north central Washington State was assessed in terms of inorganic-chemical, trace-metal, and fecal-coliform concentrations. For the Spokane Valley aquifer some organic-chemical data were also included. Results of this assessment indicate that the ground water in the region is generally...
Availability of water from the alluvial aquifer in part of the Green River Valley, King County, Washington
W. E. Lum II, R. C. Alvord, B. W. Drost
1984, Water-Resources Investigations Report 83-4178
The Muckleshoot Indian Tribe plans (1982) to build a fish hatchery in part of a 1.56-square-mile area in the Green River valley, Washington, and use groundwater to operate it. Groundwater data were collected in the area and used in a U.S. Geological Survey two-dimensional groundwater-flow model calibrated to simulate the...
Streamflow gain-and-loss and suspended-sediment characteristics of the South Platte River and three irrigation canals near Fort Morgan, Colorado
B. C. Ruddy
1984, Water-Resources Investigations Report 84-4220
A 2-year study during 1982-83 was made to document the streamflow gain-and-loss and suspended sediment characteristics of the South Platte River, Fort Morgan Canal, Upper Platte and Beaver Canal, and the Lower Platte and Beaver Canal near Fort Morgan, Colorado, prior to possible construction of the proposed Narrows Reservoir. Six...
A method for estimating ground-water return flow to the Colorado River in the Palo Verde-Cibola area, California and Arizona
Sandra J. Owen-Joyce
1984, Water-Resources Investigations Report 84-4236
No abstract available....
Hydrologic analysis of the High Plains aquifer system in Box Butte County, Nebraska
R. A. Pettijohn, Hsiu-Hsiung Chen
1984, Water-Resources Investigations Report 84-4046
During the past 40 years, pumpage of ground water for irrigation from the High Plains aquifer system underlying Box Butte County, Nebraska, has resulted in a steady decline of water levels. Consequently, a digital model of the aquifer system was constructed to evaluate various water-management alternatives. The hydraulic conductivity of...
Water-table contour map of the carbonate rocks of eastern Chester County, Pennsylvania, October 1983
Ronald A. Sloto
1984, Open-File Report 84-235
No abstract available...
PREDICTING GROUND-WATER DRAINAGE TO SURFACE MINES.
Linda S. Weiss, Devin L. Galloway
Schreiber David L., editor(s)
1984, Conference Paper
A two-dimensional, finite-difference numerical model is used to simulate the drainage of ground water into a surface coal mine. Graphs of dimensionless head as a function of dimensionless distance, and dimensionless seepage flux as a function of dimensionless time are developed from results of the numerical modeling. Changes in seepage...
Ferromanganese micronodules from the surficial sediments of Georges Bank
L.J. Poppe, J.A. Commeau, F.T. Manheim, P. J. Aruscavage
1984, Journal of Marine Research (42) 463-472
Ferromanganese micronodules have been found on Georges Bank, off the U.S. northeast coast, distributed throughout the surficial sediments within an area about 125 km long and at least 12 km wide. These coarse, sand-sized concretions have precipitated from metal-rich interstitial waters and contain many of the textural and structural features...
Unsaturated-zone instrumentation in coarse alluvial deposits of the Amargosa Desert near Beatty, Nevada
D. S. Morgan, J.M. Fischer
1984, Report, Proceedings, sixth annual participants' information meeting (U.S. Department of Energy Low-Level Waste Management Program, CONF-8409115)
No abstract available....
Florida: A Jurassic transform plate boundary
Kim D. Klitgord, Peter Popenoe, Hans Schouten
1984, Journal of Geophysical Research B: Solid Earth (89) 7753-7772
Magnetic, gravity, seismic, and deep drill hole data integrated with plate tectonic reconstructions substantiate the existence of a transform plate boundary across southern Florida during the Jurassic. On the basis of this integrated suite of data the pre-Cretaceous Florida-Bahamas region can be divided into the pre-Jurassic North American plate, Jurassic...
Map of the Carpinteria area and vicinity, Santa Barbara County, California, showing water-level contours for March 1982
Dorothy Maltby
1984, Water-Resources Investigations Report 83-4273
A water-level contour map of the Carpinteria area, California, has been completed by the U.S. Geological Survey using 34 water-level measurements made by the Carpinteria County Water District in March 1982. Also shown are 5 hydrographs that show water-level fluctuations in each well between 1977 and 1982....
