Adel A. R. Zohdy, Robert J. Bisdorf, Dallas B. Jackson
1978, Open-File Report 78-709
No abstract available....
Search Results
165312 results.
Alternate formats: RIS file of the first 3000 search results | Download all results as CSV | TSV | Excel | RSS feed based on this search | JSON version of this page of results
Page 5262, results 131526 - 131550
Publication Extents
Not all publications have extents, not all extents are completely accurateE.K. Fritzell
1978, Canadian Journal of Zoology (56) 260-271
Spatial and temporal relationships among members of a raccoon (Procyon lotor) population were studied during spring and summer in east-central North Dakota during 1973–1975. Radio telemetry was used to locate 48 raccoons 6443 times. Livetrapping results and other observations suggested that most raccoons in the area were radio equipped; densities...
M.J. Armbruster, T.S. Baskett, W.R. Goforth, K.C. Sadler
1978, Transactions of the Missouri Academy of Science (12) 75-90
Seventy-nine mourning dove call-count runs were made on a 32-km route in Osage County, Missouri, May 1-August 31, 1971 and 1972. Circular study areas, each 61 ha, surrounding stop numbers 4 and 5, were delineated for intensive nest searches and population estimates. Tallies of cooing male doves along the entire...
L.M. Cowardin
1978, Journal of Forestry (76) 666-668
Wetland is part of a continuum of land types between deep water and dryland. Only one wetland classification was available for the United States prior to preparation of the new system described here, but numerous regional and special-purpose classifications are in use. The new classification is hierarchical, progressing from five...
N. O. Frederiksen
1978, Review of Palaeobotany and Palynology (25) 163-179
Pollen grains of Ginkgo, Cycas, and Encephalartos were chemically treated together with pollen of Quercus, Alnus, and Pinus, the latter three genera being used as standards. The experiments showed that: (1) boiling the pollen for 8-10 hours in 10% KOH had little if any effect on any of the grains;...
D. E. Eradmann, Howard E. Taylor
1978, Analytica Chimica Acta (99) 269-274
An automated, continuous-flow system is utilized to determine specific conductance and pH simultaneously in natural waters. A direct electrometric procedure is used to determine values in the range pH 4–9. The specific conductance measurements are made with an electronically modified, commercially available conductivity meter interfaced to a separate module containing...
M.P. Bacon
1978, Earth and Planetary Science Letters (39) 250-254
A young (<1 m.y.) tholeiitic basalt dredged from the Mid-Atlantic Ridge displays a234U excess and a230Th deficiency that have resulted from the addition of seawater uranium during weathering at seafloor temperatures. Two older samples, though they acquired substantial amounts of uranium...
George J. Neuerburg
1978, Open-File Report 78-130
A model of the porphyry-metal system characteristic of the consanguineous Cretaceous and Tertiary igneous rocks and associated ores of the southern Rocky Mountains is constructed from the bits and pieces exposed in the Colorado mineral belt and the San Juan volcanic field. Hydrothermally altered rocks in a part of the...
B. K. Holmstrom
1978, Water-Resources Investigations Report 78-85
Low-flow characteristics of streams in the Rock-Fox River basin, Wis., include estimates of low-flow frequency ad flow duration at 13 gaging stations; low-flow frequency characteristics at 32 low-flow partial-record stations and 78 miscellaneous sites; and a list of base-flow discharge measurements at 244 miscellaneous sites. Equations are provided to estimate...
C.S. Weaver, D.P. Hill
1978, Pure and Applied Geophysics PAGEOPH (117) 51-64
Earthquake swarms in California are often localized to areas within dextral offsets in the linear trend in active fault strands, suggesting a relation between earthquake swarms and local crustal spreading. Local crustal spereading is required by the geometry of dextral offsets when, as in the San Andreas system, faults have...
Gerard V. Smith, Juei-Ho Liu, Mykola Saporoschenko
1978, Fuel (57) 41-45
A series of Herrin No. 6 coal and three coal-derived samples have been examined by Mo??ssbauer spectroscopy. It is established that Mo??ssbauer spectroscopy can be used to identify multiple iron species in a whole coal or an autoclaved char sample without the need to concentrate the minerals to enhance resolution....
E.D. Goldberg, V. Hodge, M. Koide, J. Griffin, E. Gamble, O.P. Bricker, G. Matisoff, G.R. Holdren Jr., R. Braun
1978, Geochimica et Cosmochimica Acta (42) 1413-1425
Present day anthropogenic fluxes of some heavy metals to central Chesapeake Bay appear to be intermediate to those of the southern California coastal region and those of Narragansett Bay. The natural fluxes, however, are in general higher. On the bases of Pb-210 and Pu-239 + 240 geochronologies and of the...
C.D. Condit
1978, Icarus (34) 465-478
By correlating the 1:25,000,000 geologic map of Mars of Scott and Carr (1977) with 4- to 10-km-diameter crater density data from Mariner 9 images, the average crater density for 23 of the equatorial geologic-geomorphic units on Mars was computed. The correlation of these two data sets was accomplished by digitizing...
D. Ninkovich, N. J. Shackleton, A. A. Abdel-Monem, J. D. Obradovich, G. Izett
1978, Nature (276) 574-577
The late Pleistocene eruption of Toba is the largest magnitude explosive eruption documented from the Quaternary. K-Ar dating of the uppermost unit of the Toba Tuff gives an age of [~amp]sim; 75,000 yr. A chemically and petrographically equivalent ash layer in deep-sea cores helps calibrate the Stage 4-5 boundary of...
C. H. Tibbals
1978, Water-Resources Investigations Report 78-76
The proportionate amount of surface area that can be paved in Floridan aquifer recharge areas in east-central Florida without reducing the net recharge to the Floridan aquifer is a function of many variables that include rainfall, depth to water table, depth to potentiometric surface of the Floridan, evaporation from paved...
F. J. Pearson Jr., D.W. Fisher, Niel Plummer
1978, Geochimica et Cosmochimica Acta (42) 1799-1807
Direct Pco2">Pco2 measurements on water samples from several CO2-charged warm springs are significantly higher than Pco2">Pco2 values calculated from field pH and alkalinity (and other constituents). In addition, calcite saturation indices calculated from field pH and solution composition indicated supersaturation...
A.H. Truesdell, N.L. Nehring
1978, Pure and Applied Geophysics PAGEOPH (117) 276-289
Steam samples from six wells (Colombaia, Pineta, Larderello 57, Larderello 155, Gabbro 6, and Gabbro 1) in a south to north section across the Larderello geothermal field have been analyzed for inorganic and hydrocarbon gases and for oxygen-18 and deuterium of steam. The wells generally decrease in depth and increase...
P.L. Ward
1978, Earthquake Information Bulletin (USGS) (10) 139-143
One of the specific objectives of the Earthquake Hazard Reduction Act of 1977 is to educate the public, including State and local officials, about earthquakes. Although the Federal Government is significantly increasing its research efforts in earthquake studies, the ultimate benefits of this program will depend on whether the individual...
Lee Emery, Edward H. Brown Jr.
1978, Transactions of the American Fisheries Society (107) 785-789
Using ovaries sampled seasonally from Lake Michigan bloaters in 1968-1969, we determined that one complement or modal group of eggs is produced each year and spawned mainly during January, February, and March. Fecundities estimated for 65 fish taken in October ranged from 3,230 eggs in one medium-size bloater (241 mm...
Marvin G. Sherrill
1978, Water Supply Paper 2047
Door County is in northeastern Wisconsin and is an area of 491 square miles. The county forms the main body of the peninsula between Green Bay and Lake Michigan. The land surface is an upland ridge controlled by the underlying bedrock. The west edge of the ridge forms an escarpment...
H. Spall
1978, Earthquake Information Bulletin (USGS) (10) 55-59
L.M. Cowardin
1978, FWS/OBS 604
J.G. Blake, C. L. Douglas
1978, Technical Report CPSU/UNLV 008/06
No abstract available at this time...
J.E. Colwell, D.S. Gilmer, E.A. Work Jr., D. Rebel
1978, Report
This report is a discussion of the feasibility of using Landsat data to generate information of value for effective management of migratory waterfowl. Effective management of waterfowl includes regulating waterfowl populations through hunting regulations and habitat management. This report examines the ability to analyze annual production by monitoring the number...
Elizabeth C. Burgess
1978, Thesis
Healthy waterfowl were found to be carriers of duck plague (DP) virus. Black ducks (Anas rubripes) and Canada geese (Branta canadensis) surviving a natural outbreak of DP at Coloma, Wisconsin, in 1973 yielded DP virus in cloacal swabs taken four years postinfection. Experimental infection of previously unexposed mallard ducks (Anas...