Matthew C. Larsen
T.D. Veve, editor(s)
1990, Book
Search Results
184900 results.
Alternate formats: RIS file of the first 3000 search results | Download all results as CSV | TSV | Excel | RSS feed based on this search | JSON version of this page of results
Page 4384, results 109576 - 109600
Publication Extents
Not all publications have extents, not all extents are completely accurateR.M. Iverson
1990, Geotechnique (40) 139-143
C. D. Farrar, D. L. Lyster
1990, Geothermal Resources Council Transactions (14) 669-674
In the early 1980's, renewed interest in the geothermal potential of the Long Valley caldera, California, highlighted the need to balance the benefits of energy development with the established recreational activities of the area. The Long Valley Hydrologic Advisory Committee, formed in 1987, instituted...
R.M. Iverson
J.H. Fink, editor(s)
1990, Book chapter, Language flows and domes
David P. Krabbenhoft, Carl J. Bowser, Mary P. Anderson, John W. Valley
1990, Water Resources Research (26) 2445-2453
Groundwater inflow and outflow contributions to the hydrologic budget of lakes can be determined using a stable isotope (18O/16O) mass balance method. The stable isotope method provides a way of integrating the spatial and temporal complexities of the flow field around a lake, thereby offering an appealing alternative to the...
David P. Krabbenhoft, Mary P. Anderson, Carl J. Bowser
1990, Water Resources Research (26) 2455-2462
A three-dimensional groundwater flow and solute transport model was calibrated to a plume of water described by measurements of δ18O and used to calculate groundwater inflow and outflow rates at a lake in northern Wisconsin. The flow model was calibrated to observed hydraulic gradients and estimated recharge rates. Calibration of...
E. A. Du Bray
1990, Open-File Report 90-616
No abstract available....
H. Gary Greene, Karen R. Hicks
1990, Book chapter, Geology and tectonics of the central California coastal region
No abstract available....
H. Gary Greene
1990, Book chapter, Geology and tectonics of the central Callifornia coastal region, San Francisco to Monterey: volume and guidebook
No abstract available....
Robert J. Gilliom, Daphne G. Clifton
1990, Journal of the American Water Resources Association (26) 11-24
Bed sediments of the San Joaquin River and its tributaries were sampled during October 7–11, 1985, and analyzed for organochiorine pesticide residues in order to determine their areal distribution and to evaluate and prioritize needs for further study. Residues of DDD, DDE, DDT, and dieldrin are widespread in the fine-grained...
John L. Fio, Roger Fujii
1990, Soil Science Society of America Journal (54) 363-369
Methods to determine soluble concentrations of selenite, selenate, and organic Se were evaluated on saturation extracts of soil samples collected from three sites on the Panoche Creek alluvial fan in the western San Joaquin Valley, California. The methods were used in combination with hydride-generation atomic-absorption spectrometry for detection of Se,...
Gary L. Guymon, Chung-Cheng Yen
1990, Water Resources Research (26) 1569-1581
The applicability of a deterministic-probabilistic model for predicting water tables in southern Owens Valley, California, is evaluated. The model is based on a two-layer deterministic model that is cascaded with a two-point probability model. To reduce the potentially large number of uncertain variables in the deterministic model, lumping of uncertain...
J.A. Ober
1990, Mining Engineering (42) 577-577
Chung-Cheng Yen, Gary L. Guymon
1990, Water Resources Research (26) 1559-1567
An efficient probabilistic model is developed and cascaded with a deterministic model for predicting water table elevations in regional aquifers. The objective is to quantify model uncertainty where precise estimates of water table elevations may be required. The probabilistic model is based on the two-point probability method which only requires...
Roy W. Fairchild, Ronald L. Hanson, Robert E. Davis
1990, Circular 91
Rocks that make up the Arbuckle-Simpson aquifer crop out over ~500 mi2 in the Arbuckle Mountains province in south-central Oklahoma. The aquifer consists of limestone, dolomite, and sandstone of the Arbuckle and Simpson Groups of Late Cambrian to Middle Ordovician age and is about 5,000-9,000 ft thick. The rocks were...
Water Resources Division, U.S. Geological Survey
1990, Report
More than 50 percent of the U.S. population currently live within 50 miles of an ocean, Great Lake, or major estuary. According to forecasts, the concentration of people along our coastlines will continue to increase into the 21st century. In addition to residential and commercial buildings and facilities worth tens...
S. L. Abidi, S.C. Ha, R.T. Rosen
1990, Journal of Chromatography (522) 179-194
Reversed-phase high-performance liquid chromatography—thermospray mass spectrometric (HPLC—MS) characteristics of four sets of lactonic complexes (one 4-butyrolactones and three dilactone complexes) derived from antimycin A were investigated. Three types of 8-hydroxy analogues were also included in the study. Pairs of a–b structures isomeric at the 8-acyloxy ester side-chains were best separated...
J. J. Fitzpatrick, D.R. Muhs, A.J.T. Jull
1990, Book chapter, Contributions to Antarctic Research I, Antarctic Research Series, v. 50
D. P. Anderson
1990, Bulletin of the European Association of Fish Pathologists (10) 124-124
No abstract available at this time...
A.K. Siwicki, D. P. Anderson
1990, Conference Paper, Proceedings; Symposium on Production Enhancement in Still-Water Pond Culture, Prague, Czechoslovakia
No abstract available at this time....
Water Resources Division, U.S. Geological Survey
1990, Book
A Forum on Orthophotography was held on May 15, 1990, at the National Aeronautics and Space Administration's Goddard Space Flight Center in Greenbelt, Maryland. The forum was sponsored jointly by the U.S. Soil Conservation Service, the U.S. Geological Survey, the National Governors' Association, and the National Association of Counties. The...
E.W. Chilton II
1990, Journal of Freshwater Ecology (5) 455-466
The standing crop and species diversity of macroinvertebrates associated with wild celery (Vallisneria americana), Eurasian watermilfoil (Myriophyllum spicatum), and coontail (Ceratophyllum demersum) were examined in Lake Onalaska, Pool 7 of the upper Mississippi River, during summer 1983. Although Ceratophyllum generally supported the largest invertebrate standing crop (number per g plant...
James A. Allen
1990, Agroforestry Systems (11) 11-22
Tree planting practices were investigated on a total of 95 homesteads in two communities in rural Swaziland. Information was also collected on socioeconomic characteristics of the homesteads. In both the study areas, Sigombeni and Bhekinkosi, there was considerable variation amongst individual homesteads in size, relative wealth (as indicated by...
P.A. Gilderhus
1990, Progressive Fish-Culturist (52) 189-191
The anesthetic benzocaine was tested for efficacy and safety for spawning-phase chinook salmon (Oncorhynchus tshawytscha) and Atlantic salmon (Salmo salar) at federal fish hatcheries. Tests were conducted in the existing hatchery water supplies (soft water; temperatures, 10–13 °C. Crystalline benzocaine was dissolved in ethanol (1 g/30 mL), and aliquots of...
Water Resources Division, U.S. Geological Survey
1990, Report
The development of geographic information systems (GIS) is a rapidly growing industry that supports natural resources, studies, land management, environmental analysis, and urban and transporation planning. The increasing use of computers for storing and analyzing earth science information has greatly expanded the demand for digital cartographic and geographic data. Digital...