Paleoceanographic implications of Miocene deep-sea hiatuses
G. Keller, J.A. Barron
1983, Geological Society of America Bulletin (94) 590-613
Miocene paleoceanographic evolution exhibits major changes resulting from the opening and closing of passages, the subsequent changes in oceanic circulation, and development of major Antarctic glaciation. The consequences and timing of these events can be observed in variations in the distribution of deep-sea...
Elevated DDE and toxaphene residues in fishes and birds reflect local contamination in the lower Rio Grande valley Texas USA
Donald H. White, C. A. Mitchell, H.R. Kennedy, A. J. Krynitsky, M. A. Ribick
1983, Southwestern Naturalist (28) 325-334
A potential organochlorine pesticide problem was identified near Mission, Texas, by the National Park Monitoring Program. Fish samples from this site have consistently contained elevated levels of DDE since 1968. Surveys were made in 1976, 1978, and 1979 to determine the extent of organochlorine pesticide contamination in fishes and birds...
ESTIMATION OF RESPONSE-SPECTRAL VALUES AS FUNCTIONS OF MAGNITUDE, DISTANCE, AND SITE CONDITIONS.
W. B. Joyner, D.M. Boore
Chung Riley M.Lew H.S.Kovacs William D., editor(s)
1983, Conference Paper, National Bureau of Standards, Special Publication
Horizontal pseudo-velocity response was analyzed for twelve shallow earthquakes in western North America. Estimation of response-spectral values was related to magnitude, distance and site conditions. Errors in the methods are analyzed....
Screening fungicides for use in fish culture: Evaluation of the agar plug transfer, cellophane transfer, and agar dilution methods
Tom A. Bailey
1983, Progressive Fish-Culturist (45) 24-27
The reliability, reproducibility, and usefulness of three screening methods -- the cellophane transfer, the agar plug transfer, and the agar dilution -- to screen aquatic fungicides were evaluated. Achlya flagellata and Saprolegnia hypogyna were exposed to 1, 10, and 100 mg/L of malachite green to test each method. The cellophane...
Method for in vitro screening of aquatic fungicides
T.A. Bailey
1983, Journal of Fish Diseases (6) 91-100
Methods were developed for in vitro screening of candidate aquatic fungicides for efficacy against Achlya flagellata, A. racemosa, Saprolegnia hypogyna and S. megasperma. Agar plugs containing fungal hyphae, removed from the edge of actively growing colonies, were placed in the depressions of spot plates containing 1.0, 10.0 and 100 mg/l...
Hydrogeologic and water-quality characteristics of the Prairie du Chien-Jordan aquifer, Southeast Minnesota
J. F. Ruhl, R. J. Wolf, D. G. Adolphson
1983, Water-Resources Investigations Report 83-4045
Quality of water in the Prairie du Chien-Jordan aquifer is generally good, except for some localized contamination, Coal-tar derivatives that contaminate the aquifer in St. Louis Park, a western suburb in the Twin Cities Metropolitan Area, pose the most serious threat to water quality. High hardness and iron concentration limit...
Laser induced fluorescence spectra of fluorophenol cations in a Ne matrix
V.E. Bondybey, J.H. English, T.A. Miller, R.H. Shiley
1983, Journal of Chemical Physics (78) 2227-2230
Laser induced fluorescence and/or absorption spectra of the cations of 2,3,5,6‐tetrafluorophenol, 2,3,5,6‐tetrafluorothiophenol, and 3,5‐difluorophenol have been obtained in a Ne matrix. The spectra of C6HF4OH+ are much better resolved than in the gas phase. The gas phase congestion is likely caused by the near degeneracy of the and electronic...
Objective procedures for lineament enhancement and extraction
G. K. Moore, F. A. Waltz
1983, Photogrammetric Engineering and Remote Sensing (49) 641-647
A longterm research goal at EROS Data Center is to develop automated, objective procedures for lineament mapping. In support of this goal, a five-step digital convolution procedure has been used to produce directionally enhanced images, which contain few artifacts and little noise. The main limitation of this procedure is that...
The magnetic field of the earth, 1980 magnetic vertical intensity
E. B. Fabiano, N.W. Peddie, A.K. Zunde
1983, IMAP 1460
No abstract available....
Water quality and the rotifer populations in the Atchafalaya River Basin, Louisiana
L. E. Holland, C.F. Bryan, J.P. Newman Jr.
1983, Hydrobiologia (98) 55-69
We compiled distributional and ecological information on the class Rotifera from both flood controlled and uncontrolled reaches of the Atchafalaya River Basin, a large river-swamp in the south-central United States. In the minimally altered lower basin a variety of aquatic habitats within a small area resulted...
A procedure to estimate the parent population of the size of oil and gas fields as revealed by a study of economic truncation
J.H. Schuenemeyer, L.J. Drew
1983, Journal of the International Association for Mathematical Geology (15) 145-161
An estimation technique has been derived to predict the number of small fields in a geologic play or basin. Historically, many small oil and gas fields went unreported because they were not economical. This led to an underestimation of the number of undiscovered small fields. A study of the distributions...
DETERMINATION OF MODE OF OCCURRENCE OF TRACE ELEMENTS IN THE UPPER FREEPORT COAL BED USING SIZE AND DENSITY SEPARATION PROCEDURES.
C.A. Palmer, R.H. Filby
1983, Conference Paper
A procedure has been developed using low temperature ashing, followed by size and sink-float separation of the ash, X-ray diffraction analysis, and instrumental neutron activation analysis to give both qualitative and quantitative information for major, minor and trace minerals and their associated trace elements in coal....
Bedform distribution and inferred sand transport on Georges Bank, United States Atlantic continental shelf.
D.C. Twichell
1983, Sedimentology (30) 695-710
Four bedform provinces have been identified using sidescan-sonar and echo-sounding techniques: large sand waves superimposed on sand ridges, small sand waves, megaripples, and featureless seafloor. Sand-wave asymmetry and surface-sediment texture have been used to infer bedload transport paths and although the asymmetry of megaripples could not be determined, the occurrence...
Sm-Nd age and isotopic systematics of the bimodal suite, ancient gneiss complex, Swaziland
R. W. Carlson, D.R. Hunter, F. Barker
1983, Nature (305) 701-704
Studies of the development and stabilization of the Archaean crust often focus on the relative temporal relationships between the metamorphosed basaltic to ultramafic volcanic units (greenstone belts) and the sialic gneiss terrains that make up the oldest sections of the terrestrial crust. At the heart of this interest are the...
The use of sagebrush (Artemisia) as a biogeochemical indicator of base-metal deposits in Precambrian rocks of west-central Colorado
T.G. Lovering, J. A. Hedal
1983, Journal of Geochemical Exploration (18) 205-230
The efficacy of sagebrush (Artemisia) as a biogeochemical indicator of base-metal mineralization in stratabound Precambrian ore deposits in west-central Colorado was investigated by collecting new (mostly flowering) growth from several sagebrush shrubs over and near five such deposits in three different areas. These are the Sedalia mine and two mines...
Relationship between form, function, and distribution of two Arctostaphylos species (Ericaceae) and their putative hybrids
C.T. Ball, J. Keeley, H. Mooney, J. Seeman, W. Winner
1983, Oecologia Plantarum (4) 153-164
U.S. Department of the Interior News Release
G.S. Gutsell
1983, Trout Growers Creel (16) 9
Environmental factors that influence prescribed burning in the Northern Plains
A.D. Kruse, K.F. Higgins, J.L. Piehl
1983, Book chapter, Management of public lands in the Northern Great Plains
Several environmental conditions were recorded and analyzed for 192 prescribed burns in the Northern Great Plains. The purpose of these burns was to improve wildlife habitat and manipulate native prairie vegetation. All of the fires occurred in grassland and shrubsteppe vegetation types. Fuels were predominantly grasses and forbs intermixed with...
Leetown role grows as clearinghouse
G.S. Gutsell
1983, Aquaculture Magazine (9) 5-6
What's happening: Dr. Hugh Poston
G.S. Gutsell
1983, Fisheries (8) 34-34
No abstract available....
The fledging of common and thick-billed murres on Middleton Island, Alaska
Scott A. Hatch
1983, Journal of Field Ornithology (54) 266-274
Three species of alcids, Common and Thick-billed murres (Uria aalge and U. lomvia) and the Razorbill (Alca torda), have post-hatching developmental patterns intermediate to precocial and semi-precocial modes (Sealy 1973). The young leave their cliff nest sites at about one quarter of adult weight and complete their growth at sea....
Pyle assigned at NFC
G.S. Gutsell
1983, Salmonid (7) 17, 27
Obituary - Dr. SF Snieszko (1902 - 1984)
G.S. Gutsell
1983, Bulletin of the European Association of Fish Pathologists (3) 45-46
Retention of infectious haematopoietic necrosis virus infectivity in fish tissue homogenates and fluids stored at three temperatures
J. Burke, D. Mulcahy
1983, Journal of Fish Diseases (6) 543-547
Pools of brain, kidney, spleen, liver and gut tissues from several rainbow trout, Salmo gairdneri Richardson, and whole sockeye salmon, Oncorhynchus nerka (Walbaum), fry were homogenized with a known amount of infectious haematopoietic necrosis virus (IHNV). Virus was also added to ovarian fluids and sera pooled from several rainbow trout....
Capture myopathy in a free-flying greater sandhill crane (Grus canadensis tabida) from Wisconsin
R. M. Windingstad, S.S. Hurley, L. Sileo
1983, Journal of Wildlife Diseases (19) 289-290
No abstract available....
