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Page 4752, results 118776 - 118800

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Not all publications have extents, not all extents are completely accurate
Krakatau 1883
T. Simkin, R.S. Fiske
1983, Earthquake Information Bulletin (USGS) (15) 128-133
This year marks the 100th anniversary of the eruption of Krakatau, perhaps the most famous volcanic event in recorded history. During a 23-hour period on August 26 and 17, 1883, more than 4 cubic miles of volcanic debris exploded upward from Krakatau, resulting in the death of more than 36,000...
Hydrology of the Ferron Sandstone aquifer and effects of proposed surface-coal mining in Castle Valley, Utah, with a section on stratigraphy and a section on leaching of overburden
Gregory C. Lines, Daniel J. Morrissey, Thomas A. Ryer, Richard H. Fuller
1983, Water Supply Paper 2195
Coal in the Ferron Sandstone Member of the Mancos Shale of Cretaceous age has traditionally been mined by underground techniques in the Emery Coal Field in the southern end of Castle Valley in east-central Utah. However, approximately 99 million tons are recoverable by surface mining. Ground water in the Ferron...
Altitude of the top of the Matawan Group-Magothy Formation, Suffolk County, Long Island, New York
Richard K. Krulikas, E. J. Koszalka, Thomas P. Doriski
1983, Open-File Report 83-137
The Magothy aquifer, with its irregular surface and deeply eroded buried valleys, has become the major source of fresh water in most of Suffolk Country. With the availability of recent data from deep wells and test holes, refinement of the surface-altitude contours has been possible and resulted in substantial revision...
Impact of changes in land use on the ground-water system in the Sequim-Dungeness Peninsula, Clallam County, Washington
B. W. Drost
1983, Water-Resources Investigations Report 83-4094
A digital-computer model was developed to simulate three-dimensional ground-water flow in aquifers underlying the Sequim-Dungeness peninsula, Clallam County, Washington. Analysis using the model shows that leakage from irrigation ditches is the area 's most important source of ground-water recharge. Termination of the irrigation system would lead to lower heads throughout...
Migration and winter distributions of canvasbacks staging on the Upper Mississippi River
J.R. Serie, D.L. Trauger, D.E. Sharp
1983, Journal of Wildlife Management (47) 741-753
Fall and winter distribution patterns of canvasbacks (Aythya valisineria) staging on the upper Mississippi River near LaCrosse, Wisconsin (navigational Pools 7 and 8) and Keokuk, Iowa (Pool 19) were studied during 1973-77. Sightings and recoveries obtained from 1,488 color-marked males during 1973-75 and 3,789 banded males and females during 1973-77...
Avian associations of the northern Great Plains grasslands
H.A. Kantrud, R.L. Kologiski
1983, Journal of Biogeography (10) 331-350
The grassland region of the northern Great Plains was divided into six broad subregions by application of an avian indicator species analysis to data obtained from 582 sample plots censused during the breeding season. Common, ubiquitous species and rare species had little classificatory value and were eliminated from the data...
Synthesis of geophysical data with space-acquired imagery: a review
David A. Hastings
1983, Advances in Space Research (3) 157-168
Geophysical data obtained from ground and airborne platforms have been used in the development of regional geologic models for many years. Space-acquired data and imagery have a shorter but similar history of applications. All these data may be synthesized either manually or digitally. Manual synthesis methods consist of overlaying and...
Seasonal food of juvenile lake trout in U.S. waters of Lake Ontario
Joseph H. Elrod
1983, Journal of Great Lakes Research (9) 396-402
Stomach contents of 3,554 lake trout (Salvelinus namaycush), 100 to 449 mm in total length, captured with bottom trawls during April through October 1978–81 along the south shore of Lake Ontario were examined. Invertebrates appeared to be an important food of lake trout less than 200 mm long but were...
Seabirds between Alaska and Hawaii
Patrick J. Gould
1983, The Condor (85) 286-291
Seabirds were observed between Alaska and Hawaii along 158°W longitude from 24 October to 6 November 1976. Their distributions and abundances corresponded remarkably well to oceanographic regions. Indices of seabird density dropped in a series of plateaus from 44 birds/km2 in the Alaska Current System to less than 1 bird/km2...
Screening fungicides for use in fish culture: Evaluation of the agar plug transfer, cellophane transfer, and agar dilution methods
Tom A. Bailey
1983, Progressive Fish-Culturist (45) 24-27
The reliability, reproducibility, and usefulness of three screening methods -- the cellophane transfer, the agar plug transfer, and the agar dilution -- to screen aquatic fungicides were evaluated. Achlya flagellata and Saprolegnia hypogyna were exposed to 1, 10, and 100 mg/L of malachite green to test each method. The cellophane...
EFFICIENT TRANSFER OF DATA BETWEEN MAPS OF DIFFERENT PROJECTIONS.
John P. Snyder
1983, Conference Paper, Technical Papers of the American Congress of Surveying and Mapping
There are several ways to transfer data from an existing map to another map by computer. If the projection and parameters of both maps are known, analytic formulas may be used to convert rectangular coordinates of the first map to latitude and longitude and then to rectangular coordinates of the...
A reexamination of the effects of adsorbates on the Raman spectrum of gibbsite
K.W. Cunningham, M. C. Goldberg
1983, Soil Science (136) 102-110
Previous workers have attributed substantial changes in the Raman intensities of the OH stretching bands in solid, powdered gibbsite of surface area 10 m2/g to surface interactions with the adsorbates 093Ca2+,HxPO43x- and SiO2.xH2O. These changes apparently resulted from an unsatisfactory Raman measurement procedure as a re-examination using an internal intensity...
Hydrogeologic and water-quality characteristics of the Prairie du Chien-Jordan aquifer, Southeast Minnesota
J. F. Ruhl, R. J. Wolf, D. G. Adolphson
1983, Water-Resources Investigations Report 83-4045
Quality of water in the Prairie du Chien-Jordan aquifer is generally good, except for some localized contamination, Coal-tar derivatives that contaminate the aquifer in St. Louis Park, a western suburb in the Twin Cities Metropolitan Area, pose the most serious threat to water quality. High hardness and iron concentration limit...
Method for in vitro screening of aquatic fungicides
T.A. Bailey
1983, Journal of Fish Diseases (6) 91-100
Methods were developed for in vitro screening of candidate aquatic fungicides for efficacy against Achlya flagellata, A. racemosa, Saprolegnia hypogyna and S. megasperma. Agar plugs containing fungal hyphae, removed from the edge of actively growing colonies, were placed in the depressions of spot plates containing 1.0, 10.0 and 100 mg/l...
Fission track dating of kimberlitic zircons
S.E. Haggerty, E. Raber, C. W. Naeser
1983, Earth and Planetary Science Letters (63) 41-50
The only reliable method for dating kimberlites at present is the lengthy and specialized hydrothermal procedure that extracts206Pb and238U from low-uranium zircons. This paper describes a second successful method by fission track dating of large single-crystal zircons, 1.0–1.5 cm in dimension. The use of large crystals overcomes the limitations imposed...
Process and rate of dedolomitization: Mass transfer and C14 dating in a regional carbonate aquifer
W. Back, B.B. Hanshaw, Niel Plummer, P.H. Rahn, C.T. Rightmire, M. Rubin
1983, Geological Society of America Bulletin (94) 1415-1429
Regional dedolomitization is the major process that controls the chemical character of water in the Mississippian Pahasapa Limestone (Madison equivalent) surrounding the Black Hills, South Dakota and Wyoming. The process of dedolomitization consists of dolomite dissolution and concurrent precipitation of calcite; it is...
Faulting arrested by control of ground-water withdrawal in Houston, Texas
T. Holzer, R.K. Gabrysch, E.R. Verbeek
1983, Earthquake Information Bulletin (USGS) (15) 204-209
More than 86 historically active faults with an aggregate length of 150 miles have been identified within and adjacent to the Houston, Texas, metropolitan area. Although scarps of these faults grow gradually and without causing damaging earthquakes, historical fault offset has cost millions of dollars in damage to houses and...
DIGITAL CARTOGRAPHY AIDS IN THE SOLUTION OF BOUNDARY DISPUTE.
Francis J. Beck
1983, Conference Paper, Technical Papers of the American Congress of Surveying and Mapping
The boundary between the States of Ohio and Kentucky and Indiana and Kentucky has been in dispute for many years. A major breakthrough in this continuing dispute has been a recent agreement between the States to accept the boundary line as depicted on U. S. Geological Survey 7. 5-minute quadrangle...
HIGH-TEMPERATURE GEOTHERMAL RESOURCES IN HYDROTHERMAL CONVECTION SYSTEMS IN THE UNITED STATES.
Manuel Nathenson
1983, Conference Paper, Electric Power Research Institute, Advanced Power Systems Division, (Report) EPRI AP
The calculation of high-temperature geothermal resources ( greater than 150 degree C) in the United States has been done by estimating the temperature, area, and thickness of each identified system. These data, along with a general model for recoverability of geothermal energy and a calculation that takes account of the...
Use of multispectral scanner images for assessment of hydrothermal alteration in the Marysvale, Utah, mining area.
M. H. Podwysocki, D. B. Segal, M. J. Abrams
1983, Economic Geology (78) 675-687
Airborne multispectral scanner. A color composite image was constructed using the following spectral band ratios: 1.6/2.2 mu m, 1.6/0.48 mu m, and 0.67/1.0 mu m. The color ratio composite successfully distinguished most types of altered rocks from unaltered rocks; further division of altered rocks into ferric oxide-rich and -poor types....
87Sr/86Sr ratios for basalt from Loihi Seamount, Hawaii
Marvin A. Lanphere
1983, Earth and Planetary Science Letters (66) 380-387
87Sr/86Sr ratios of 15 samples of basalt dredged from Loihi Seamount range from 0.70334 to 0.70368. The basalt types range from tholeiite to basanite in composition and can be divided into six groups on the basis of abundances of K2O, Na2O, Rb...
Determination of elements in National Bureau of Standards' geological reference materials SRM 278 obsidian and SRM 688 basalt by inductively coupled argon plasma-atomic emission spectrometry
J.G. Crock, F.E. Lichte, Paul H. Briggs
1983, Geostandards Newsletter (7) 335-340
Two new geologic reference materials, issued by the National Bureau of Standards as standard reference materials, have been analyzed by a precise, accurate, and rapid method of analysis for their element content. The described procedure uses a multi‐acid, low temperature digestion in a closed teflon vessel, followed by the simultaneous...
Automated determination of bromide in waters by ion chromatography with an amperometric detector
G. S. Pyen, D. E. Erdmann
1983, Analytica Chimica Acta (149) 355-358
An automated ion chromatograph, including a program controller, an automatic sampler, an integrator, and an amperometric detector, was used to develop a procedure for the determination of bromide in rain water and many ground waters. Approximately 10 min is required to obtain a chromatogram. The detection limit for bromide is...