FUTURE APPLICATIONS OF EXPERT SYSTEMS FOR THE EVALUATION OF ENERGY RESOURCES.
B.M. Miller
1987, Conference Paper, Society of Petroleum Engineers of AIME, (Paper) SPE
The loss of professional experience and expertise in the domain of the earth sciences may prove to be one of the most serious outcomes of the boom-and-bust cyclic nature of the volatile energy and mining industries. Promising new applications of powerful computer systems, known as 'expert systems' or 'knowledge-based systems',...
Labeling Projections on Published Maps
John P. Snyder
1987, American Cartographer (14) 21-27
To permit accurate scaling on a map, and to use the map as a source of accurate positions in the transfer of data, certain parameters - such as the standard parallels selected for a conic projection - must be stated on the map. This information is often missing on published...
Volcanism and massive sulfide formation at a sedimented spreading center, Escanaba Trough, Gorda Ridge, northeast Pacific
J. L. Morton, M.L. Holmes, R.A. Koski
1987, Geophysical Research Letters (14) 769-772
Seismic-reflection profiles over the sediment-filled Escanaba Trough at the southern Gorda Ridge reveal a series of volcanic centers that pierce the sediment. The volcanic edifices are 3 to 6 km in diameter and are spaced at 15 to 20 km intervals along the axis of the...
Age-size relationships of desert tortoises (Gopherus agassizii) in southern Nevada
F.B. Turner, P.A. Medica, R.B. Bury
1987, Copeia (1987) 974-979
No abstract available....
Compilation of hydrologic data for the Edwards aquifer, San Antonio area, Texas, 1985, with 1934-85 summary
G. B. Ozuna, G.M. Nalley, M. N. Bowman
1987, Edwards Underground Water District Bulletin 45
No abstract available....
Direct comparison of kinetic and local equilibrium formulations for solute transport affected by surface reactions
Jean M. Bahr, Jacob Rubin
1987, Water Resources Research (23) 438-452
Modeling transport of reacting solutes in porous media often requires a choice between models based on the local equilibrium assumption (LEA) and models involving reaction kinetics. Direct comparison of the mathematical formulations for these two types of transport models can aid in this choice. For cases of transport affected by...
Variable delay miniservo-control unit
M.A. Uhrich
1987, WRD Instrument News
No abstract available. ...
Estimating generalized skew of the log-Pearson Type III distribution for annual peak floods in Illinois
Kevin A. Oberg, Dean M. Mades
1987, Water-Resources Investigations Report 86-4008
Four techniques for estimating generalized skew in Illinois were evaluated: (1) a generalized skew map of the US; (2) an isoline map; (3) a prediction equation; and (4) a regional-mean skew. Peak-flow records at 730 gaging stations having 10 or more annual peaks were selected for computing station skews. Station...
Seismicity map of the state of Florida
B. Glen Reagor, Carl W. Stover, Sylvester Theodore Algermissen
1987, Miscellaneous Field Studies Map 1056
This map is one of a series of seismicity maps produced by the U. S. Geological Survey that show earthquake data of individual states or groups of states at the scale of 1:1,000,000. This map shows only those earthquakes with epicenters located within the boundaries of Florida, even though earthquakes...
Diagenetic palaeotemperatures from aqueous fluid inclusions: re-equilibration of inclusions in carbonate cements by burial heating
R.C. Burruss
1987, Mineralogical Magazine (51) 477-481
Diagenetic palaeotemperatures determined from aqueous fluid inclusions can be affected by re-equilibration during burial heating. Calculations based on the observed behaviour of inclusions in fluorite under external confining pressure allows prediction of the temperatures and depths of burial necessary to initiate re-equilibration of aqueous inclusions in the common size range...
PYROLYSIS/GAS CHROMATOGRAPHY/MASS SPECTROMETRY OF A SERIES OF BURIED WOODS AND COALIFIED LOGS THAT INCREASE IN RANK FROM PEAT TO SUBBITUMINOUS COAL.
Patrick G. Hatcher, Harry E. Lerch, Rama K. Kotra, Vincent T. Verheyen
1987, Conference Paper, ACS Division of Fuel Chemistry, Preprints
To better understand the coalification process, we have conducted numerous studies of the chemical structural composition of xylem tissue from gymosperm wood and related woods that has been coalified to varying degrees. The studies presented here, examine the chemical nature of buried and coalified xylem tissue at the molecular level....
Benthic foraminifera of the Panamanian Province: distribution and origins.
R.W. Crouch, C. W. Poag
1987, Journal of Foraminiferal Research (17) 153-176
Two hundred twenty-nine species of benthic foraminifera have been identified from 96 stations representing 33 localities on the eastern Pacific inner continental shelf, ranging from southern Peru to northern Baja California. Their distributions mark nearshore provincial boundaries that are nearly identical with those previously documented from the distribution of ostracodes...
Some effects of climate variability on hydrology in western North America
D. H. Peterson, D.R. Cayan, J. S. Dileo-Stevens, T.G. Ross
1987, Conference Paper, The influence of climate change and climatic variability on the hydrologic regime and water resources (Proceedings of the Vancouver Symposium, August 1987), IAHS Publication no. 168
The strong north-south gradient in precipitation along the West Coast makes this region an interesting laboratory for studying the influence of climate on runoff variability in general and riverine chemistry in particular. Interannual fluctuations in large-scale atmospheric circulation and associated precipitation and runoff can produce major disruptions in the "average"...
Survival of striped bass larvae and yearlings in relation to contaminants and water quality in the upper Chesapeake Bay
L. W. Hall Jr., Alfred E. Pinkney, L. Herman, Susan E. Finger
1987, Archives of Environmental Contamination and Toxicology (16) 391-400
This study was designed to evaluate survival of striped bass yolk-sac larvae and yearlings at three locations in their natural spawning habitat in the upper Chesapeake Bay (Chesapeake and Delaware Canal) using “in-situ” chambers; correlate larval and yearling survival with the presence of 11 water quality parameters, 10 inorganic contaminants...
Studies on vertical transmission of Aeromonas salmonicida
G. L. Bullock, H. M. Stuckey
1987, Progressive Fish-Culturist (49) 302-303
In four attempts to effect vertical transmission of Aeromonas salmonicida, the cause of furunculosis, transmission did not occur. Progeny of both naturally infected and artificially infected brood stock of rainbow trout (Salmo gairdneri) and brook trout (Salvelinus fontinalis) did not develop furunculosis during a 10‐12‐month posthatching observation period....
Effects of feeding and fasting on wolf blood and urine characteristics
Glenn D. DelGiudice, Ulysses S. Seal, L. David Mech
1987, Journal of Wildlife Management (51) 1-10
Feeding and fasting trials were conducted with 2 groups (A and B) of 4 gray wolves (Canis lupus) each during January 1980. The groups were fed for 9 days and fasted for 10 days in a cross-over design. Blood and urine samples and weight data were collected every 2-3 days...
Growth and survival of fingerling lake trout reared at four densities
R. W. Soderberg, D.S. Baxter, W. F. Krise
1987, Progressive Fish-Culturist (49) 284-285
Fingerling lake trout (Salvelinus namaycush) were reared at density indexes (fish density, in pounds per cubic foot, divided by fish length in inches) of 0.25, 0.50, 1.0, and 2.0. Final lengths, weights, condition factors, and mortality rates did not differ among the treatments. We conclude that fingerling lake trout may...
Use of urine in snow to indicate condition of wolves
L. David Mech, Ulysses S. Seal, Glenn D. DelGiudice
1987, Journal of Wildlife Management (51) 10-13
Urine deposited in snow by wild gray wolves (Canis lupus) and by fed and fasted captive wolves was analyzed for urea nitrogen, calcium, sodium, potassium, and creatinine. Ratios of the elements with creatinine were considerably higher for fed than for fasted animals, and ratios for fed wolves compared favorably with...
Effects of rearing density on growth, survival, and fin condition of Atlantic salmon
R. W. Soderberg, J. W. Meade
1987, Progressive Fish-Culturist (49) 280-283
Parr of Atlantic salmon (Salmo salar) were reared to final densities of 0.53‐4.29 lb/ft2 of rearing container bottom area under conditions of constant temperature, water quality, and diet. Growth and survival were not affected by density. After 171 d, the condition of pectoral and dorsal fins had not changed from that...
Some dietary amino acids from meal-feeding phase shifts of locomotor activity
R.E. Spieler, T. A. Noeske-Hallin, T.A. DeRosier, H. A. Poston
1987, Medical Science Research (15) 921-922
Sedimentary processes on the northwestern Iberian continental margin viewed by long-range side-scan sonar and seismic data
James V. Gardner, Robert B. Kidd
1987, Journal of Sedimentary Petrology (57) 397-407
The effects of an eastern boundary current in the North Atlantic have been mapped from about 39° north latitude along the Iberian margin to as far north as 43°30 north latitude at the western margin of Galicia Bank. The geostrophic current has produced sediment drifts that are...
Localized sudden changes in the geomagnetic secular variation.
L.R. Alldredge
1987, Journal of Geomagnetism & Geoelectricity (39) 111-118
There is much debate as to whether there was a worldwide geomagnetic jerk in 1969 or 1970. It is agreed that there was an unusual sharp change in the secular variation in the east component, Y, in Europe at that time. This note points out how a localized sudden change...
Near-bottom suspended matter concentration on the Continental Shelf during storms: estimates based on in situ observations of light transmission and a particle size dependent transmissometer calibration
J. A. Moody, B. Butman, Michael H. Bothner
1987, Continental Shelf Research (7) 609-628
A laboratory calibration of Sea Tech and Montedoro-Whitney beam transmissometers shows a linear relation between light attenuation coefficient (cp) and suspended matter concentration (SMC) for natural sediments and for glass beads. However the proportionality constant between cp and SMC depends on the particle diameter and particle type. Thus, to measure...
A study of metal ion adsorption at low suspended-solid concentrations
Cecily C.Y. Chang, J.A. Davis, James S. Kuwabara
1987, Estuarine, Coastal and Shelf Science (24) 419-424
A procedure for conducting adsorption studies at low suspended solid concentrations in natural waters (<50 mg l−1) is described. Methodological complications previously associated with such experiments have been overcome. Adsorption of zinc ion onto synthetic colloidal titania (TiO2) was studied as a function...
ESTIMATION OF NAVIGATION - DAM DISCHARGE IN ILLINOIS.
Linda S. Weiss
1987, Conference Paper
Techniques were used to estimate discharge for the Brandon Road Dam on the Des Plaines River and the Dresden Island, Marseilles, and Starved Rock Dams on the Illinois River in northern Illinois. Tainter gates are operated to regulate streamflow at all dams. Additionally, headgates are used for regulation of the...
