Geyser periodicity and the response of geysers to deformation
S. E. Ingebritsen, S.A. Rojstaczer
1996, Journal of Geophysical Research B: Solid Earth (101) 21891-21905
Numerical simulations of multiphase fluid and heat transport through a porous medium define combinations of rock properties and boundary conditions which lead to geyser‐like periodic discharge. Within the rather narrow range of conditions that allow geyser‐like behavior, eruption frequency and discharge are highly sensitive to the intrinsic permeabilities of the...
Final report on coastal sage scrub amphibian and reptile autecology study
T. J. Case, Robert N. Fisher
1996, Report
No abstract available at this time...
Bullfrog impacts on sensitive wetland herpetofauna and Herpetology of San Bernardino National Wildlife Refuge
P.C. Rosen, C.R. Schwalbe
1996, Report
No abstract available at this time...
Selected aspects of the ecology of the Arizona ridge-nosed rattlesnake (Crotalus willardi willardi) and the banded rock rattlesnake (Crotalus lepidus klauberi) in Arizona. Report to AGFD Heritage Program, Phoenix
H.K. McCrystal, C.R. Schwalbe, D.F. Retes
1996, Report
No abstract available at this time...
Raven abundance at anthropogenic resources in the western Mojave Desert, California
William I. Boarman, Richard J. Camp, Mark Hagan, Wanda Deal
1996, Report
No abstract available at this time...
Neotropical migratory bird monitoring study at Marine Corps Base Camp Pendleton, California. Second annual progress report, 1996
B.E. Kus
1996, Report
No abstract available at this time...
Gravity field over the Sea of Galilee: Evidence for a composite basin along a transform fault
Z. Ben-Avraham, Uri S. ten Brink, R. Bell, M. Reznikov
1996, Journal of Geophysical Research B: Solid Earth (101) 533-544
The Sea of Galilee (Lake Kinneret) is located at the northern portion of the Kinneret-Bet Shean basin, in the northern Dead Sea transform. Three hundred kilometers of continuous marine gravity data were collected in the lake and integrated with land gravity data to a distance of more than 20 km...
Localized alteration of the paintbrush nonwelded hydrologic unit within the exploratory studies facility
Z. E. Peterman, R.W. Spengler, F.R. Singer, S.C. Beason
1996, Conference Paper, High Level Radioactive Waste Management - Proceedings of the Annual International Conference
The mound-like feature in the lower part of the PTn, composed of highly disrupted strata and open-system alteration were the result of intense water-rock interaction. This feature was formed by fumarolic activity during cooling of the 12.8 Ma Topopah Spring Tuff and prior to deposition of the pre-Pah Canyon bedded...
Distinguishing shocked from tectonically deformed quartz by the use of the SEM and chemical etching
A.J. Gratz, D.K. Fisler, B.F. Bohor
1996, Earth and Planetary Science Letters (142) 513-521
Multiple sets of crystallographically-oriented planar deformation features (PDFs) are generated by high-strain-rate shock waves at pressures of > 12 GPa in naturally shocked quartz samples. On surfaces, PDFs appear as narrow (50-500 nm) lamellae filled with amorphosed quartz (diaplectic glass) which can be etched with hydrofluoric acid or with hydrothermal...
Simulation of phosphate transport in sewage-contaminated groundwater, Cape Cod, Massachusetts
K.G. Stollenwerk
1996, Applied Geochemistry (11) 317-324
Sewage-contaminated groundwater currently discharges to Ashumet Pond, located on Cape Cod, Massachusetts. Phosphate concentrations as high as 60 μmol l−1 have been measured in groundwater entering Ashumet Pond, and there is concern that the rate of eutrophication could increase. Phosphate in the sewage...
Early and middle(?) Cambrian metazoan and protistan fossils from West Africa
S.J. Culver, J.E. Repetski, J. Pojeta Jr., D. Hunt
1996, Journal of Paleontology (70) 1-6
Supposed Upper Proterozoic strata in the southwest Taoudeni Basin, Guinea and Senegal, and from the Mauritanide fold belt, Mauritania, have yielded mostly poorly preserved small skeletal fossils of metazoan and protistan origin. Problematic, but possible echinoderm material and spicules of the heteractinid sponge Eiffelia dominate the Taoudeni Basin...
The effects of off-road vehicles on animal populations and habitats: A review of the literature. For the U S Bureau of Land Management, Riverside
K.H. Berry
1996, Report
No abstract available at this time...
Control of the European Green Crab in California: Detection of Natural Enemies. Final Report to Saltonstall-Kennedy. Grant Number: NA46FDO493
A. M. Kuris, K. D. Lafferty, M.E. Torchin
1996, Report
No abstract available at this time...
Summary of proposed endangered plant data collected on Santa Rosa Island by National Biological Survey staff and collaborators, 1994-1996
A. Kathryn McEachern
1996, Report
No abstract available at this time...
A digital system for surface reconstruction
Weiyang Zhou, Robert H. Brock, Paul F. Hopkins
1996, Photogrammetric Engineering and Remote Sensing (62) 719-726
A digital photogrammetric system, STEREO, was developed to determine three dimensional coordinates of points of interest (POIs) defined with a grid on a textureless and smooth-surfaced specimen. Two CCD cameras were set up with unknown orientation and recorded digital images of a reference model and a specimen. Points on the...
Activity and feeding of ovigerous Dungeness crabs in Glacier Bay, Alaska
Deborah A. Schultz, Thomas C. Shirley, Charles E. O’Clair, S. James Taggart
1996, Conference Paper, Proceedings of the international symposium on biology, management, and economics of crabs from high latitude habitats: Lowell Wakefield fisheries symposium
The activity and feeding behavior of ovigerous Dungeness crabs, Cancer magister, were examined as part of a long-term study. Part of this study surveyed Bartlett Cove in Glacier Bay, Alaska, during the spring of 1994 where 50 commercial pots were soaked for 24 hours. Catch per unit effort (CPUE), dispersion,...
Compression of the Global Land 1-km AVHRR dataset
B. L. Kess, D.R. Steinwand, S.E. Reichenbach
1996, International Journal of Remote Sensing (17) 2955-2969
Large datasets, such as the Global Land 1-km Advanced Very High Resolution Radiometer (AVHRR) Data Set (Eidenshink and Faundeen 1994), require compression methods that provide efficient storage and quick access to portions of the data. A method of lossless compression is described that provides multiresolution decompression within geographic subwindows of...
Migration, fidelity, and use of autumn staging grounds in Alaska by Cackling Canada Geese Branta canadensis minima
Robert E. Gill Jr., Christopher Babcock, Colleen M. Handel, William R. Butler Jr., Dennis G. Raveling
1996, Wildfowl (47) 42-61
Cackling Canada Geese were studied annually (1985-88) on autumn migration staging areas in Alaska during a period of rapid population growth. Geese concentrated at two estuaries (Ugashik Bay and Cinder Lagoon) along the north side of the Alaska Peninsula. Birds arrived on the staging areas in late September, numbers peaked...
Allocation of limited reserves to a clutch: A model explaining the lack of a relationship between clutch size and egg size
Paul L. Flint, J. Barry Grand, James S. Sedinger
1996, The Auk (113) 939-942
Lack (1967, 1968) proposed that clutch size in waterfowl is limited by the nutrients available to females when producing eggs. He suggested that if nutrients available for clutch formation are limited, then species producing small eggs would, on average, lay more eggs than species with large eggs. Rohwer (1988) argues...
Causes of declining survival of lake trout stocked in U.S. waters of Lake Superior in 1963-1986
Michael J. Hansen, Mark P. Ebener, Richard G. Schorfhaar, Stephen T. Schram, Donald R. Schreiner, James H. Selgeby, William W. Taylor
1996, Transactions of the American Fisheries Society (125) 831-843
Survival of the 1963-1982 year-classes of stocked yearling lake trout Salvelinus namaycush declined significantly over time in Lake Superior. To investigate possible causes of this decline, a Ricker model of stock-recruitment was used to describe the catch per effort (CPE) of age-7 stocked lake trout in the Michigan, Minnesota, and...
Potential spawning habitat for lake trout on Julian's Reef, Lake Michigan
Thomas A. Edsall, Gregory W. Kennedy
1996, Journal of Great Lakes Research (22) 83-88
Julian's Reef is an historical spawning ground for lake trout (Salvelinus namaycush) in southwestern Lake Michigan. It is a designated lake trout refuge and is the focus of lake trout restoration efforts in Illinois waters of the lake. We studied the reef to determine its potential as spawning habitat for...
Control of external Aeromonas salmonicida: topical disinfection of salmonids with Chloramine-T
R. C. Cipriano, L.A. Ford, C. E. Starliper, J.D. Teska, J.T. Nelson, B.N. Jensen
1996, Journal of Aquatic Animal Health (8) 52-57
Brook trout Salvelinus fontinalis were treated with single 60-min static baths of 250 mg formalin/L, 3% NaCl, and 15 mg Chloramine-T/L to evaluate the efficacy of these compounds against external infections of Aeromonas salmonicida. Prevalence of A. salmonicida was significantly lower in brook trout treated with Chloramine-T than among those...
Geochemical characteristics and origin of the Lebowa Granite Suite, Bushveld Complex
M. Hill, F. Barker, D. Hunter, R. Knight
1996, International Geology Review (38) 195-227
The ∼ 2052-Ma Lebowa Granite Suite (LGS) represents the culminating phase of an Early Proterozoic magmatic cycle in the Central Transvaal area of the Kaapvaal Province. Following extrusion of at least 200,000 km3 of intermediate to acid volcanics (Rooiberg Felsite), mafic and ultramafic magmas intruded at 2065 Ma to...
Overview of the limnology of Crater Lake
Gary L. Larson
1996, Northwest Science (70) 39-47
Crater Lake occupies the collapsed caldera of volcanic Mount Mazama in Crater Lake National Park, Oregon. It is the deepest lake (589 m) in the United States and the 7th deepest lake in the world. The water column mixes to a depth of about 200 m in winter and spring from...
Effects of pesticides on owls in North America
Lawrence J. Blus
1996, Journal of Raptor Research (30) 198-206
A literature review of the effects of pesticides on owls in North America showed that relatively few studies have been undertaken. Owls used in experiments seem as sensitive to organochlorine pesticides (OCs) as other birds of prey, but wild owls experienced few serious problems, primarily because they were exposed to...
