Notes on sedimentation activities calendar year 1983
U.S. Interagency Advisory Committee on Water Data- Subcommittee on Sedimentation
1984, 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...
Inverse problems for torsional modes.
C. Willis
1984, Geophysical Journal of the Royal Astronomical Society (78) 847-853
Considers a spherically symmetric, non-rotating Earth consisting of an isotropic, perfect elastic material where the density and the S-wave velocity may have one or two discontinuities in the upper mantle. Shows that given the velocity throughout the mantle and the crust and given the density in the lower mantle, then...
Evaluation of the National Archives program to convert nitrate aerial photographs of the United States to a stable-base safety film.
R.S. Williams Jr., T.R. Lyons, J.G. Ferrigno, M.C. Quinn
1984, Photogrammetric Engineering and Remote Sensing (50) 1437-1441
Discusses the programme on reproducing the 1930's and early 1940's nitrate aerial photographs of large areas of the US onto stable-base safety film, and the proceedings of a February 1981 meeting at the National Archives and Records Service, General Services Administration, which discussed the programme and inspected the results of...
[Book review] The youngest science: notes of a medicine-watcher, by Lewis Thomas
Douglas H. Johnson
1984, Prairie Naturalist (16) 47-47
Review of: The youngest science: notes of a medicine-watcher. Alfred P. Sloan Foundation Series. Lewis Thomas. Penguin Books, 1995. Pennsylvania State University. 270 pp. ISBN: 0140243275, 9780140243277....
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...
Evaluation of ryegrass cover crops in rearing ponds for Florida largemouth bass
C.W. Bowling, W.P. Rutledge, J. G. Geiger
1984, Progressive Fish-Culturist (46) 55-57
No abstract available. ...
Mantle metasomatism: The REE story
H. G. Wilshire
1984, Geology (12) 395-398
Refractory rocks with light REE/heavy REE ratios greater than chondrite are common as xenoliths in basalts and kimberlites and are found in some oceanic peridotite massifs. This has led to the supposition that large parts of the upper mantle have been metasomatically altered...
Complexation of trace metals by adsorbed natural organic matter
J.A. Davis
1984, Geochimica et Cosmochimica Acta (48) 679-691
The adsorption behavior and solution speciation of Cu(II) and Cd(II) were studied in model systems containing colloidal alumina particles and dissolved natural organic matter. At equilibrium a significant fraction of the alumina surface was covered by adsorbed organic matter. Cu(II) was partitioned primarily between the surface-bound organic matter and dissolved...
Earthquakes, July-August 1983
W. J. Person
1984, Earthquake Information Bulletin (USGS) (16) 34-39
There were three major earthquakes (7.0-7.9) during this reporting period, but all were in sparsely populated areas. The first occurred on July 11 in the South Shetland Islands, the second in the Aegean Sea on August 6, and the third on August 17 in Kamchatka. Earthquake-related deaths from other quakes...
Simulated effects of transplant removal from the River Mountains bighorn herd II
C. L. Douglas
1984, Technical Report CPSU/UNLV 025/6A
No abstract available at this time...
Earthquakes in the United States, October-December 1982
Carl W. Stover, J. H. Minsch, F. W. Baldwin, L. R. Brewer
1984, Circular 896-D
No abstract available....
Effects of weather on breeding ducks in North Dakota
M.C. Hammond, Douglas H. Johnson
1984, Fish and Wildlife Technical Report 1
The present report quantifies relations between weather and several aspects of the breeding biology of four duck species: mallard (Anas platyrhynchos), gadwall (A. strepera), blue-winged teal (A. discors), and redhead (Aythya americana). Data were obtained from two locations in North Dakota,--the J. Clark Salyer National Wildlife Refuge, intermittently during 1936-68,...
Oxygen isotope evidence for submarine hydrothermal alteration of the Del Puerto ophiolite, California
Peter Schiffmant, A.E. Williams, R.C. Evarts
1984, Earth and Planetary Science Letters (70) 207-220
The oxygen isotope compositions and metamorphic mineral assemblages of hydrothermally altered rocks from the Del Puerto ophiolite and overlying volcaniclastic sedimentary rocks at the base of the Great Valley sequence indicate that their alteration occurred in a submarine hydrothermal system. Whole rock δ18O compositions decrease progressively down section (with increasing...
Oxygen isotope calibration of the onset of ice-rafting and history of glaciation in the North Atlantic region
N. J. Shackleton, J. Backman, H. Zimmerman, D.V. Kent, M.A. Hall, David G. Roberts, D. Schnitker, J.G. Baldauf, A. Desprairies, R. Homrighausen, P. Huddlestun, J.B. Keene, A.J. Kaltenback, K.A.O. Krumsiek, A.C. Morton, J.W. Murray, J. Westberg-Smith
1984, Nature (307) 620-623
We report here that DSDP Site 552A, cored with the hydraulic piston corer on the west flank of Rockall Bank, recovered an undisturbed sequence of alternating white deep-sea carbonate oozes and dark-coloured layers that are rich in glacial debris. Oxygen isotope analysis of the sequence together with detailed nannofossil and...
USGS adopts revised criteria and terms for hazards notices
D. Finley
1984, Earthquake Information Bulletin (USGS) (16) 190-190
EFFECT ON BRIDGE PIERS ON STREAMFLOW AND CHANNEL GEOMETRY.
James C. Blodgett
Kassabian NaomiHerman ScottKaplan Elizabeth W.Starkey Jane, editor(s)
1984, Conference Paper, Transportation Research Record
Piers in the waterway affect the velocity distribution across the channel and may act as barriers to floating debris. In addition, they also affect channel geometry by causing general and local scour in the vicinity of the bridge. The level of hydraulic efficiency of an unobstructed channel may be reduced...
Comparative geochronology in the reversely zoned plutons of the Bottle Lake Complex, Maine: U-Pb on zircons and Rb-Sr on whole rocks
R. A. Ayuso, Joseph G. Arth, A.K. Sinha, J. Carlson, D. R. Wones
1984, Contributions to Mineralogy and Petrology (88) 113-125
The Bottle Lake Complex is a composite granitic batholith emplaced into Cambrian to Lower Devonian metasedimentary rocks. Both plutons (Whitney Cove and Passadumkeag River) are very coarse grained hornblende and biotite-bearing granites showing petrographic and geochemical reverse zonation. Two linear whole rock Rb/Sr isochrons on xenolith-free Whitney Cove and Passadumkeag...
EVALUATION OF LOW-SUN ILLUMINATED LANDSAT-4 THEMATIC MAPPER DATA FOR MAPPING HYDROTHERMALLY ALTERED ROCKS IN SOUTHERN NEVADA.
Melvin H. Podwysocki, Marty S. Power, Jack Salisbury, O. D. Jones
1984, Conference Paper
Landsat-4 Thematic Mapper (TM) data of southern Nevada collected under conditions of low-angle solar illumination were digitally processed to identify hydroxyl-bearing minerals commonly associated with hydrothermal alteration in volcanic terrains. Digital masking procedures were used to exclude shadow areas and vegetation and thus to produce a CRC image suitable for...
Landslides caused by earthquakes
D. K. Keefer
1984, Geological Society of America Bulletin (95) 406-421
Data from 40 historical world-wide earthquakes were studied to determine the characteristics, geologic environments, and hazards of landslides caused by seismic events. This sample of 40 events was supplemented with intensity data from several hundred United States earthquakes to study relations between landslide...
TECHNIQUE FOR ENHANCING DIGITAL COLOR IMAGES BY CONTRAST STRETCHING IN MUNSELL COLOR SPACE.
Fred A. Kruse, Gary L. Raines
1984, Conference Paper
The Munsell color system can be used to further enhance the appearance of high-quality digital color-composite images. A color-balanced 'standard' color-composite image is first produced using any desired contrast stretching algorithm. The stretched digital data are then transformed into the cylindrical Munsell color space. An enhanced version of a color-composite...
Laboratory studies of volcanic jets
S. W. Kieffer, B. Sturtevant
1984, Journal of Geophysical Research Solid Earth (89) 8253-8268
The study of the fluid dynamics of violent volcanic eruptions by laboratory experiment is described, and the important fluid-dynamic processes that can be examined in laboratory models are discussed in detail. In preliminary experiments, pure gases are erupted from small reservoirs. The gases used are Freon 12 and Freon 22,...
Upwarp of anomalous asthenosphere beneath the Rio Grande rift
E.C. Parker, P.M. Davis, J.R. Evans, H. M. Iyer, K.H. Olsen
1984, Nature (312) 354-356
Continental rifts are possible analogues of mid-ocean ridges, although major plate tectonic features are less clearly observed1. Current thermal models of mid-ocean ridges2-4 consist of solid lithospheric plates overlying the hotter, less viscous asthenosphere, with plate thickness increasing away from the ridge axis. The lithospheric lower boundary lies at or...
Evaporation from flowing channels
J.M. Fulford, T.W. Sturm
1984, Journal of Energy Engineering - ASCE (110) 1-9
Stability‐dependent and Dalton‐type mass transfer formulas are determined from experimental evaporation data in ambient and heated channels and are shown to have similar performance in prediction of evaporation. The formulas developed are compared with those proposed by other investigators for lakes and flowing channels. The evaporation data were obtained from...
Heating of a fully saturated Darcian half-space: Pressure generation, fluid expulsion, and phase change
P. Delaney
1984, International Journal of Heat and Mass Transfer (27) 1327-1335
Analytical solutions are developed for the pressurization, expansion, and flow of one- and two-phase liquids during heating of fully saturated and hydraulically open Darcian half-spaces subjected to a step rise in temperature at its surface. For silicate materials, advective transfer is commonly unimportant in the liquid region; this is not...
Map showing outcrops of pre-Quaternary ash-flow tuffs and volcaniclastic rocks, Basin and Range province, Arizona
J. E. Jenness, D. A. Lopez, J. R. LaFortune
1984, Water-Resources Investigations Report 83-4114-F
No abstract available....
