Stability of streams and lakes on Mars
M. H. Carr
1983, Icarus (56) 476-495
Under present climatic conditions streams and lakes on Mars will freeze. Freezing is slow and would have a negligible effect in impeding flow of the large floods that are believed to have eroded the outflow channels. Valley networks are more difficult...
You asked for it! Proper use of fish culturists and biologists and some thoughts on fall activities
M. Martin
1983, Aquaculture Magazine (10) 38-40
Effect of population density of lake trout in cylindrical jars on growth and oxygen consumption
H. A. Poston
1983, Progressive Fish-Culturist (45) 8-13
Lake trout (Salvelinus namaycush), initial weight 2.25 g, were reared at population densities of 25, 50, 75, 100, and 125 fish in 6.55‐L cylindrical jars for 20 weeks with a mean water flow of 2.45 L/min. All fish survived the experiment. A significant (P < 0.05) reduction in growth occurred...
Ultrastructural changes in the hepatocytes of juvenile rainbow trout and mature brown trout exposed to copper or zinc
H.V. Leland
1983, Environmental Toxicology and Chemistry (2) 353-368
Morphological changes in hepatocytes of mature brown trout (Salmo trutta Linnaeus) and juvenile rainbow trout (Salmo gairdneri Richardson), accompanying chronic exposures to copper and zinc, were examined by transmission electron microscopy. At a concentration of copper not inhibitory to the final stages of gonadal development or spawning of brown trout,...
Geobarometry of ultramafic xenoliths from Loihi Seamount, Hawaii, on the basis of CO2 inclusions in olivine
E. Roedder
1983, Earth and Planetary Science Letters (66) 369-379
Abundant fluid inclusions in olivine of dunite xenoliths (∼1–3 cm) in basalt dredged from the young Loihi Seamount, 30 km southeast of Hawaii, are evidence for three coexisting immiscible fluid phases—silicate melt (now glass), sulfide melt (now solid), and dense supercritical CO2 (now liquid + gas)—during growth and later fracturing of some of...
Factors affecting dietary requirement and deficiency signs of L-tryptophan in rainbow trout
H. A. Poston, G. L. Rumsey
1983, Journal of Nutrition (113) 2568-2577
Two experiments were conducted to determine the concentration of dietary tryptophan needed for optimal growth and survival of fingerling rainbow trout (Salmo gairdneri), to characterize signs of tryptophan deficiency, and to ascertain the effects of niacin on deficiency signs. Test diets containing either hydrolyzed or intact casein were fed with...
Gravity studies in the Cascade Range
Carol A. Finn, David Williams
1983, Conference Paper, Transactions - Geothermal Resources Council
A compatible set of gravity data has been compiled for the entire Cascade Range. From this data set a series of interpretive color gravity maps have been prepared, including a free air anomaly map, Bouguer anomaly map at a principle, and an alternate reduction density, and filtered and derivative versions...
Crustal structure of the northern mississippi embayment and a comparison with other continental rift zones
Walter D. Mooney, M.C. Andrews, A. Ginzburg, D.A. Peters, R. M. Hamilton
1983, Tectonophysics (94) 327-348
Previous geological and geophysical investigations have suggested that the Mississippi Embayment is the site of a Late Precambrian continental rift that was reactivated in the Mesozoic. New information on the deep structure of the northern Mississippi Embayment, gained through an extensive seismic refraction survey, supports a rifting hypothesis. The data...
The saltwater-freshwater interface in the Tertiary limestone aquifer, southeast Atlantic outer-continental shelf of the U.S.A.
R.H. Johnston
1983, Journal of Hydrology (61) 239-249
Hydrologic testing in an offshore oil well abandoned by Tenneco, Inc., determined the position of the saltwater-freshwater interface in Tertiary limestones underlying the Florida-Georgia continental shelf of the U.S.A. Previous drilling (JOIDES and U.S.G.S. AMCOR projects) established the existence of freshwater far offshore in this area. At the Tenneco well...
A teleseismic analysis of the New Brunswick earthquake of January 9, 1982
G. L. Choy, J. Boatwright, J. W. Dewey, S.A. Sipkin
1983, Journal of Geophysical Research Solid Earth (88) 2199-2212
The analysis of the New Brunswick earthquake of January 9, 1982, has important implications for the evaluation of seismic hazards in eastern North America. Although moderate in size (mb 5.7), it was well-recorded teleseismically. Source characteristics of this earthquake have been determined from analysis of data that were digitally recorded by...
Paleohydrological methods and some examples from Swedish fluvial environments I. Cobble and boulder deposits
G. P. Williams
1983, Geografiska Annaler, Series A (65 A) 227-243
This article establishes approximate empirical relations for determining the minimum unit stream power, bed shear stress and mean flow velocity capable of moving cobbles and boulders on streambeds. The derived equations then are used to estimate the minimum paleoflows that could have transported the boulders of two ancient...
CONTRIBUTION OF LAND USE DATA TO THE INVESTIGATION OF TRENDS IN FLOODING IN THE TUG FORK BASIN OF KENTUCKY, VIRGINIA, AND WEST VIRGINIA.
Sarah E. Bowers, Arthur G. Scott
1983, Conference Paper, Technical Papers of the American Congress of Surveying and Mapping
The U. S. Geological Survey, in cooperation with the U. S. Bureau of Mines and the Office of Surface Mining Reclamation and Enforcement, is investigating effects of mining on flood frequency and magnitude within the basin. Changing land use, particularly the acceleration of surface mining, may cause or contribute to...
A strategy for mineral and energy resource independence
W. D. Carter
1983, Advances in Space Research (3) 223-236
Data acquired by Landsats 1, 2, and 3, are beginning to provide the information on which an improved mineral and energy resource exploration strategy can be based. Landsat 4 is expected to augment this capability with its higher resolution (30 m) and additional spectral bands in the Thematic Mapper (TM)...
Characteristic analysis-1981: Final program and a possible discovery
R.B. McCammon, J.M. Botbol, R. Sinding-Larsen, R. W. Bowen
1983, Journal of the International Association for Mathematical Geology (15) 59-83
The latest ornewest version of thecharacteristicanalysis (NCHARAN)computer program offers the exploration geologist a wide variety of options for integrating regionalized multivariate data. The options include the selection of regional cells for characterizing deposit models, the selection of variables that constitute the models, and the choice of logical combinations of variables...
Large partition coefficients for trace elements in high-silica rhyolites
G. Mahood, W. Hildreth
1983, Geochimica et Cosmochimica Acta (47) 11-30
The partitioning of 25 trace elements between high-silica rhyolitic glass and unzoned phenocrysts of potassic and sodic sanidine, biotite, augite, ferrohedenbergite, hypersthene, fayalite, titanomagnetite, ilmenite, zircon, and allanite has been determined by INAA on suites of samples from the mildly peralkaline...
Investigation of internal friction in fused quartz, steel, Plexiglass, and Westerly granite from 0.01 to 1.00 Hertz at 10-8 to 10-7 strain amplitude
Hsi-Ping Liu, L. Peselnick
1983, Journal of Geophysical Research Solid Earth (88) 2367-2379
A detailed evaluation on the method of internal friction measurement by the stress-strain hysteresis loop method from 0.01 to 1 Hz at 10−8 to 10−7 strain amplitude and 23.9°C is presented. Significant systematic errors in relative phase measurement can result from convex end surfaces of the sample and stress sensor and from...
Generalized adjustment by least squares ( GALS).
A.A. Elassal
1983, Photogrammetric Engineering and Remote Sensing (49) 201-206
The least-squares principle is universally accepted as the basis for adjustment procedures in the allied fields of geodesy, photogrammetry and surveying. A prototype software package for Generalized Adjustment by Least Squares (GALS) is described. The package is designed to perform all least-squares-related functions in a typical adjustment program. GALS is...
Structure, burial history, and petroleum potential of frontal thrust belt and adjacent foreland, southwest Montana
W. J. Perry Jr., B. R. Wardlaw, N. H. Bostick, E. K. Maughan
1983, American Association of Petroleum Geologists Bulletin (67) 725-743
The frontal thrust belt in the Lima area of southwestern Montana consists of blind (nonsurfacing) thrusts of the Lima thrust system beneath the Lima anticline and the Tendoy thrust sheet to the west. The Tendoy sheet involves Mississippian through Cretaceous rocks of the southwest-plunging nose of the Mesozoic Blacktail-Snowcrest uplift...
Chryse Basin channels: low-gradients and ponded flows.
Baerbel K. Lucchitta, H.M. Ferguson
1983, Journal of Geophysical Research (88) A553-A568
Gradients on the floors of the Martian outflow channels that are derived from radar-elevation profiles across Lunae Planum and Chryse Basin have much lower values than those obtained from the U.S. Geological Survey's topographic map. Whereas the gradients of Maja and Ares Valles are similar to those of the catastrophic...
Growth and survival of Atlantic salmon fed semimoist or dry starter diets
C. A. Lemm
1983, Progressive Fish-Culturist (45) 72-75
Growth and survival were compared for first‐feeding fry of Atlantic salmon (Salmo salar) fed a closed‐formula commercial preparation, BioDiet, or U.S. Fish and Wildlife Service high nutrient density diets 398 or 406 for 14 weeks. Growth of fry fed BioDiet for 2, 3, 4, or 6 weeks from first feeding...
COORDINATION OF DIGITAL CARTOGRAPHY IN THE FEDERAL GOVERNMENT.
K. Eric Anderson, Peter F. Bermel
1983, Conference Paper, Technical Papers of the American Congress of Surveying and Mapping
The development and application of digital cartographic data bases are significant and important activities in the Federal Government. Increasingly, digital spatial data are being used for computer-based analyses in support of management decisions on land, forests, minerals, and energy....
Distribution, abundance and carbon isotopic composition of gaseous hydrocarbons in Big Soda Lake, Nevada: An alkaline, meromictic lake
R.S. Oremland, D.J. Des Marais
1983, Geochimica et Cosmochimica Acta (47) 2107-2114
Distribution and isotopic composition (δ13C) of low molecular weight hydrocarbon gases were studied in Big Soda Lake (depth = 64 m), an alkaline, meromictic lake with permanently anoxic bottom waters. Methane increased with depth in the anoxic mixolimnion (depth = 20–35 m), reached uniform concentrations (55 μM/l) in the monimolimnion...
Plutonic rocks of Jurassic age in the Alaska-Aleutian Range batholith: Ghemical variation and polarity
B.I. Reed, A.T. Miesch, M. A. Lanphere
1983, Geological Society of America Bulletin (94) 1232-1240
Plutonic rocks of Jurassic age exposed on the eastern, or Pacific, side of the Alaska–Aleutian Range batholith represent the roots of a magmatic arc generally considered to have been generated in response to northwest-directed subduction. These rocks form a compositionally continuous calc-alkaline suite...
Seasonal changes in the chemistry and biology of a meromictic lake (Big Soda Lake, Nevada, U.S.A.)
J. E. Cloern, B.E. Cole, R.S. Oremland
1983, Hydrobiologia (105) 195-206
Big Soda Lake is an alkaline, saline lake with a permanent chemocline at 34.5 m and a mixolimnion that undergoes seasonal changes in temperature structure. During the period of thermal stratification, from summer through fall, the epilimnion has low concentrations of dissolved inorganic nutrients (N, Si) and CH4, and low...
Recent geologic development of Lake Michigan (U.S.A.)
D.L. Gross, R.A. Cahill
1983, Hydrobiologia (103) 193-198
The stresses placed on Lake Michigan since the advent of industrialization require knowledge of the sedimentology of the whole lake in order to make informed decisions for environmental planning. Sediment accumulation rates are low: areas of the lake receiving the most sediment average only 1 mm a-1; deep-water basins average...
