Numerical models of hydrothermal circulation for the intrusion zone at an ocean ridge axis
P.L. Patterson, R.P. Lowell
Kent A. Fanning, Frank T. Manheim, editor(s)
1982, Book chapter, The dynamic environment of the ocean floor
No abstract available....
Antelope Mine carbonaceous overburden and plant growth study
K. McEachern
1982, Report
No abstract available at this time...
The U. S. Geological Survey Geologic Hazards Program
D. L. Peck
1982, Earthquake Information Bulletin (USGS) (14) 182-182
In 1879, Congress established the U.S Geological Survey for "the classification of the public lands and the examination of the geological structure, mineral resources, and products of the national domain." Throughout the past 103 years, the Survey has successfully fulfilled these responsibilities, but it has also been responsive to changing...
GC-MS analysis of 2H- and 15N- labeled analogues of N-nitroso-2(3',7'-dimethyl-2', 6'=octadienyl) aminoethlanoles in organic tissues
S. L. Abidi, A.L. Idelson
H.L. Schmidt, editor(s)
1982, Book chapter, Analytical Chemistry Symposia Series
Abstract not submitted to date...
Extraction and investigative techniques for study of interstitial waters of unconsolidated sediments: A review
P.A. Kriukov, Frank T. Manheim
Kent A. Fanning, Frank T. Manheim, editor(s)
1982, Book chapter, The dynamic environment of the ocean floor
No abstract available....
Engineering aspects of seismological studies in Peru
L. Ocola
1982, Earthquake Information Bulletin (USGS) (14) 33-38
Large and small earthquakes occur frequently in Peru. Official institutions in charge of the study of seismological and geophysical aspects of such large natural events have a responsibility to provide engineers, planners, and government officials with basic data to implement safety measures to minimize the destructive impact of great earthquakes. The...
Food habits of feral burros and desert bighorn sheep in Death Valley National Monument
T. Ginnett, C. L. Douglas
1982, Book chapter, Desert Bighorn Council Transactions
No abstract available at this time...
An evaluation of the effects of recreational activities on bighorn in the San Gabriel Mountains, California
K.M. Hamilton, S. Holl, C. L. Douglas
1982, Book chapter, Desert Bighorn Council Transactions
No abstract available at this time...
Jim Bridger Mine annual report: vegetation monitoring
K. McEachern
1982, Report
No abstract available at this time...
Genetic implications of minor-element and Sr-isotope geochemistry of alkaline rock complexes in the Wet Mountains area, Fremont and Custer counties, Colorado
T.J. Armbrustmacher, C. E. Hedge
1982, Contributions to Mineralogy and Petrology (79) 424-435
Concentrations of Rb, Sr, and REE (rare earth elements), and Sr-isotopic ratios in rocks of the Cambrian alkaline complexes in the Wet Mountains area, Colorado, show that rocks formed as end-products of a variety of magmas generated from different source materials. The complexes generally contain a bimodal suite of cumulus...
Velocity and bottom-stress measurements in the bottom boundary layer, outer Norton Sound, Alaska.
D.A. Cacchione, D.E. Drake, P. Wiberg
1982, Geologie en Mijnbouw (61) 71-78
We have used long-term measurements of near-bottom velocities at four heights above the sea floor in Norton Sound, Alaska, to compute hourly values of shear velocity u., roughness and bottom-drag coefficient. Maximum sediment resuspension and transport, predicted for periods when the computed value of u. exceeds a critical level, occur...
Determination of polar organic solutes in oil-shale retort water
J.A. Leenheer, T.I. Noyes, H. A. Stuber
1982, Environmental Science & Technology (16) 714-723
No abstract available....
Multi-element analysis of manganese nodules by atomic absorption spectrometry without chemical separation
Jean S. Kane, J. M. Harnly
1982, Analytica Chimica Acta (139) 297-305
Five manganese nodules, including the USGS reference nodules A-1 and P-1, were analyzed for Co, Cu, Fe, K, Mg, Mn, Na, Ni and Zn without prior chemical separation by using a simultaneous multi-element atomic absorption spectrometer with an air—cetylene flame. The nodules were prepared in three digestion matrices. One of...
Techniques of trend analysis for monthly water quality data
Robert M. Hirsch, James R. Slack, Richard A. Smith
1982, Water Resources Research (18) 107-121
Some of the characteristics that complicate the analysis of water quality time series are non-normal distributions, seasonality, flow relatedness, missing values, values below the limit of detection, and serial correlation. Presented here are techniques that are suitable in the face of the complications listed above for the exploratory analysis of...
Evolution of geothermal fluids deduced from chemistry plots: Yellowstone National Park (U.S.A.)
E. Mazor, J. M. Thompson
1982, Journal of Volcanology and Geothermal Research (12) 351-360
Large amounts of chemical data, obtained in geothermal fields, may readily be sorted-out by the aid of a simple set of graphs that provide a clear over-all picture and facilitate the understanding of geochemical processes taking place. As a case study, data from several hundred samples of the thermal springs...
Stream-grade variation and riparian-forest ecology along Passage Creek, Virginia
Cliff R. Hupp
1982, Bulletin of the Torrey Botanical Club (109) 488-499
Passage Creek, in northwestern Virginia, flows on relatively nonresistant shales, then cuts through a gorge underlain by resistant sandstone In the gorge, the stream gradient steepens, the size of bed material increases, a braided channel forms, and riparian-forest composition and growth form changes relative to areas outside the gorge Effects...
Contemporary block tectonics: California and Nevada
D.P. Hill
1982, Journal of Geophysical Research Solid Earth (87) 5433-5450
Well-determined fault plane solution and the gross pattern of late-Cenozoic faulting in California and Nevada show a systematic relation between the orientation of fault planes and slip directions. In general, normal faults have northerly strikes, reverse faults have easterly strikes, and dextral and sinstral strike slip faults have northwesterly and...
The eighty-second Audubon Christmas bird count. 438. Ocean City, Md.
C.S. Robbins
1982, American Birds (36) 509-510
No abstract available....
Oahu: perspective from space
Gary E. Johnson
1982, Journal of Geography (81) 30-32
Satellite remote sensing provides us with a unique perspective from space. This perspective is synoptic in nature and provides regional views of most of the land areas of the earth. The orbital characteristics of the Landsat system are such that repetitive imagery of the same area may be obtained. Because...
Changes in vegetation and grazing capacity following honey mesquite control
Kirk C. McDaniel, John H. Brock, Robert H. Haas
1982, Journal of Range Management (35) 551-557
Honey mesquite kill and suppression, vegetation response, and changes in grazing use and capacity were evaluated following brush control in north-central Texas. Tree grubbing was most effective for eliminating honey mesquite, but because of soil and plant damage the treatment did not increase grazing capacity or improve range condition compared...
An assessment of Landsat data acquisition history on identification and area estimation of corn and soybeans
M. M. Hixson, M. E. Bauer, Donna K. Scholz
1982, Remote Sensing of Environment (12) 123-128
In the past decade, numerous studies have demonstrated the potential of satellite remote sensing for providing accurate timely crop area information. This study assessed the impact of Landsat data acquisition history on classification and area estimation accuracy of corn and soybeans in the U.S. Corn Belt. The results illustrate the...
Deserts of China
Alta S. Walker
1982, American Scientist (70) 366-376
Improving arid land quality requires an understanding of the original state of the land and its relationship to wind, water, and plant regimes, as well as understanding of interactions within the present ecosystem. Chinese scientists and local residents have made significant advances in improving arid environments in gobi and sandy...
Landsat classification accuracy assessment procedures
R. R. Mead, John Szajgin
1982, Photogrammetric Engineering and Remote Sensing (48) 139-141
A working conference was held in Sioux Falls, South Dakota, 12-14 November, 1980 dealing with Landsat classification Accuracy Assessment Procedures. Thirteen formal presentations were made on three general topics: (1) sampling procedures, (2) statistical analysis techniques, and (3) examples of projects which included accuracy assessment and the associated costs, logistical...
Evaluating the crop coefficient using spectral reflectance
J. L. Heilman, W. E. Heilman, Donald G. Moore
1982, Agronomy Journal (74) 967-971
A field study was conducted in four differentially irrigated plots of alfalfa (Medicago sativa L.) planted in Shiprock sandy loam (coarseloamy, mixed, mesic Typic Haplargid) to assess spectral reflectance for estimating the crop coefficient (Kc), defined here as the ratio of actual to potential evapotranspiration (ET). A bidirectional reflectance factor was...
Notes on sedimentation activities calendar year 1981
U.S. Interagency Advisory Committee on Water Data- Subcommittee on Sedimentation
1982, Report
This report is a digest of information furnished by those Federal agencies conducting sedimentation investigations. It includes descriptions of work in progress or planned, important findings, new methods, new publications, laboratory and other research activities, and other pertinent information. The material has been organized by major drainage regions in the...
