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These publications showcase the significant science conducted in our Science Centers.

Filter Total Items: 16734

Method of estimating the amount of in situ gas hydrates in deep marine sediments Method of estimating the amount of in situ gas hydrates in deep marine sediments

The bulk volume of gas hydrates in marine sediments can be estimated by measuring interval velocities and amplitude blanking of hydrated zones from true amplitude processed multichannel seismic reflection data. In general, neither velocity nor amplitude information is adequate to independently estimate hydrate concentration. A method is proposed that uses amplitude blanking calibrated by...
Authors
Myung W. Lee, D. R. Hutchinson, William P. Dillon, J. J. Miller, Warren F. Agena, B.A. Swift

Emergency striped bass research study report for 1991 Emergency striped bass research study report for 1991

No abstract available at this time
Authors
P.J. Rago, R.M. Dorazio, R.A. Richards, D.G. Deuel, C.D. Stephan

Subsurface temperatures and geothermal gradients on the north slope of Alaska Subsurface temperatures and geothermal gradients on the north slope of Alaska

On the North Slope of Alaska, geothermal gradient data are available from high-resolution, equilibrated well-bore surveys and from estimates based on well-log identification of the base of ice-bearing permafrost. A total of 46 North Slope wells, considered to be in or near thermal equilibrium, have been surveyed with high-resolution temperatures devices and geothermal gradients can be...
Authors
Timothy S. Collett, Kenneth J. Bird, Leslie B. Magoon

Chemical and nutritional evaluation of soya protein preparations as primary nitrogen sources for rainbow trout (Oncorhynchus mykiss) Chemical and nutritional evaluation of soya protein preparations as primary nitrogen sources for rainbow trout (Oncorhynchus mykiss)

Five soya-bean preparations that had been subjected to various physicochemical processing procedures were chemically defined in respect to proximate analysis, amino acid analyses, protease inhibitor activity, soluble oligosaccharides and antigenicity. These soya preparations were then formulated, along with a low-temperature fish meal control, into six isonitrogenous and isocaloric...
Authors
G. L. Rumsey, S. G. Hughes, Robert Winfree

Acid Rain Acid Rain

Acid deposition, or acid rain as it is more commonly referred to, has become a widely publicized environmental issue in the U.S. over the past decade. The term usually conjures up images of fish kills, dying forests, "dead" lakes, and damage to monuments and other historic artifacts. The primary cause of acid deposition is emission of S02 and NOx to the atmosphere during the combustion...
Authors
Owen P. Bricker, Karen C. Rice

Environmental contaminants in bald eagle eggs—1980–84—and further interpretations of relationships to productivity and shell thickness Environmental contaminants in bald eagle eggs—1980–84—and further interpretations of relationships to productivity and shell thickness

Bald eagle (Haliaeetus leucocephalus) eggs were collected in 15 States in the United States in 1980–1984 and analyzed for organochlorine pesticides, polychlorinated biphenyls (PCBs), and mercury. Data were compared and combined with data from earlier studies to examine trends and refine relationships of contaminants to shell thickness and young production. Moderate shell thinning...
Authors
Stanley N. Wiemeyer, Christine M. Bunck, Charles J. Stafford

Environmental contaminants in canvasbacks wintering on San Francisco Bay, California Environmental contaminants in canvasbacks wintering on San Francisco Bay, California

The concentrations of 11 trace elements, 21 organochlorines, 13 polycyclic aromatic hydrocarbons, and 13 aliphatic hydrocarbons were determined in canvasbacks (Aythya valisineria) wintering on San Francisco Bay, California during 1988. With the exception of Se, concentrations of potentially toxic elements were low. Similarly, concentrations of most organic compounds were near or below...
Authors
A.K. Miles, H. M. Ohlendorf

Canine parvovirus effect on wolf population change and pup survival Canine parvovirus effect on wolf population change and pup survival

Canine parvovirus infected wild canids more than a decade ago, but no population effect has been documented. In wild Minnesota wolves (Canis lupus) over a 12-yr period, the annual percent population increase and proportion of pups each were inversely related to the percentage of wolves serologically positive to the disease. Although these effects did not seem to retard this large extant...
Authors
L.D. Mech, S.M. Goyal
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