Comparative studies of macrophages in salmonids
A.J. Becker Jr., L. Kobbe, K.S. Squibb, W. F. Krise
1989, Conference Paper, American Zoologist
No abstract available at this time...
Body weight and composition dynamics of fall migrating canvasbacks
J.R. Serie, D.E. Sharp
1989, Journal of Wildlife Management (53) 431-441
We studied body weights and composition of canvasbacks (Aythya valisineria) during fall migration 1975-77 on stopover sites along the upper Mississippi River near La Crosse, Wisconsin (Navigational Pools 7 and 8) and Keokuk, Iowa (Navigational Pool 19). Body weights varied (P < 0.001) by age and sex without interaction. Weights...
[Book review] The natural history of the Point Reyes Peninsula, by J. Evans
Gary M. Fellers
1989, Wildflower (1989) 28-29
Review of: The natural history of the Point Reyes Peninsula. J. Evans. Point Reyes National Seashore Association (June 1988). ISBN: 9999705820....
Autumn use of Izembek Lagoon, Alaska, by brant from different breeding areas
Austin Reed, Robert A. Stehn, David H. Ward
1989, Journal of Wildlife Management (53) 720-725
Thirty-three adult brant (Branta bernicla) were radiomarked at 4 widely separated areas of the western Canadian arctic and 1 area in western Alaska during June-August 1987. Their use of the Izembek Lagoon on the Alaska Peninsula was monitored through the 1987 fall staging period (Sep-Dec). Eighty percent of the brant...
Iterative techniques for characterizing marine bird habitats with time-series of satellite images
J. Christopher Haney
1989, Colonial Waterbirds (12) 78-89
Demonstrating long-term habitat use of marine habitats by seabirds is often complicated by short-term changes in habitat locations, persistence, and age. This paper describes iterative techniques for characterizing non-static habitats, such as meso-scale (10-100 km) ocean eddies and fronts, using time-series of satellite images that define sea surface conditions. Seabird...
Attendance patterns of murres at breeding sites: Implications for monitoring
Scott A. Hatch, Martha A. Hatch
1989, Journal of Wildlife Management (53) 483-493
We studied attendance patterns (presence and absence at breeding sites) of common murres (Uria aalge) and thick-billed murres (U. lomvia) at a colony in the Semidi Islands, western Gulf of Alaska. The period from mid-laying through hatching was appropriate for censusing because counts were subject to the least amount of...
Stable carbon isotopes in vernal pool aquatics of differing photosynthetic pathways
Jon E. Keeley
P.W. Rundel, J.R. Ehleringer, K.A. Nagy, editor(s)
1989, Book chapter, Stable Isotopes in Ecological Research.
No abstract available at this time...
California's potential volcanic hazards
P. Jorgenson
1989, Earthquakes & Volcanoes (USGS) (21) 96-100
This is a summary of "Potential Hazards from Future Volcanic Eruptions in California' (USGS Bulletin No. 1847: price $4.75). The chief areas of danger are Lassen Peak, Mount Shasta and Medicine Lake Highland in the north; Clear Lake, Mono Lake and Long Valley in the centre; and Owen's River-Death Valley,...
Sensitive strata in Bootlegger Cove Formation
Harold W. Olsen
1989, Journal of Geotechnical Engineering (115) 1239-1251
Sensitivity magnitudes are interpreted from remolded strength values in recent subsurface geologic, geotechnical, and geochemical data from the Bootlegger Cove Formation adjacent to the Turnagain Heights Landslide. The results show that strata composed of highly sensitive clays occur in both the middle and lower zones of the formation, and that...
Thermal stresses due to cooling of a viscoelastic oceanic lithosphere
R.P. Denlinger, W. Z. Savage
1989, Journal of Geophysical Research Solid Earth (94) 744-752
Theories based upon thermal contraction of cooling oceanic lithosphere provide a successful basis for correlating seafloor bathymetry and heat flow. The horizontal components of the contraction of the lithosphere as it cools potentially give rise to large thermal stresses. Current methods to calculate these stresses assume that on the time...
Late Neogene geohistory analysis of the Humboldt basin and its relationship to convergence of the Juan de Fuca plate
P.A. McCrory
1989, Journal of Geophysical Research Solid Earth (94) 3126-3138
Geohistory analysis of Neogene Humboldt basin strata provides important constraints for hypotheses of the tectonic evolution of the southern Cascadia subduction margin, leading up to the arrival of the Mendocino triple junction. This analysis suggests that the tectonic evolution of the Humboldt basin area was dominated by coupling between the...
Tectonic history of the north portion of the San Andreas fault system, California, inferred from gravity and magnetic anomalies
A. Griscom, R.C. Jachens
1989, Journal of Geophysical Research Solid Earth (94) 3089-3099
Geologic and geophysical data for the San Andreas fault system north of San Francisco suggest that the eastern boundary of the Pacific plate migrated eastward from its presumed original position at the base of the continental slope to its present position along the San Andreas transform fault by means of...
Determination of sensible heat flux over sparse canopy using thermal infrared data
William P. Kustas, B. J. Choudhury, M. S. Moran, R. J. Reginato, R. D. Jackson, L. W. Gay, H. L. Weaver
1989, Agricultural and Forest Meteorology (44) 197-216
Surface temperatures, Ts, were estimated for a natural vegetative surface in Owens Valley, California, with infrared thermometric observations collected from an aircraft. The region is quite arid and is composed primarily of bushes (∼30%) and bare soil (∼70%). Application of the bulk transfer equation for the estimation of sensible heat, H, gave...
Basin-scale relations via conditioning
B.M. Troutman, M.R. Karlinger, D.P. Guertin
1989, Stochastic Hydrology and Hydraulics (3) 111-133
A rainfall-runoff model is used in conjunction with a probabilistic description of the input to this model to obtain simple regression-like relations for basin runoff in terms of basin and storm characteristics. These relations, similar to those sought in regionalization studies, are computed by evaluating the conditional distribution of model...
New evidence for polyphase metamorphism of glaucophane schist and eclogite exotic blocks in the Franciscan Complex, California and Oregon
Diane E. Moore, M.C. Blake Jr.
1989, Journal of Metamorphic Geology (7) 211-228
The early metamorphic history of high-grade exotic blocks in the Franciscan Complex may be more complicated than previously supposed. The different assemblages of high-grade glaucophane schists, eclogite, amphibolite and hornblende schist are commonly considered to have formed at the same time from essentially unmetamorphosed oceanic crust. However, new textural and...
A channel dynamics model for real-time flood forecasting
Anne B. Hoos, Antonis D. Koussis, Guy O. Beale
1989, Water Resources Research (25) 691-705
A new channel dynamics scheme (alternative system predictor in real time (ASPIRE)), designed specifically for real-time river flow forecasting, is introduced to reduce uncertainty in the forecast. ASPIRE is a storage routing model that limits the influence of catchment model forecast errors to the downstream station closest to the catchment....
Dune migration in a steep, coarse-bedded stream
Randy L. Dinehart
1989, Water Resources Research (25) 911-923
During 1986 and 1987, migrating bed forms composed of coarse sand and fine gravel (d50=1.8 to 9.1 mm) were documented in the North Fork Toutle River at Kid Valley, Washington, at flow velocities ranging from 1.6 to 3.4 m s−1 and depths of 0.8 to 2.2 m. The bed forms (predominantly...
Morphology and stratigraphy of small barrier-lagoon systems in Maine
W. Duffy, D. F. Belknap, J. T. Kelley
1989, Marine Geology (88) 243-262
The coast of Maine contains over 200 individual barrier-lagoon systems, most quite small, with an aggregate length of nearly 100 km. Although they represent less than 5% of the tidally influenced coastline of Maine, they are widely distributed and occur in...
Geographic information system/watershed model interface
Gary T. Fisher
1989, Conference Paper
Geographic information systems allow for the interactive analysis of spatial data related to water-resources investigations. A conceptual design for an interface between a geographic information system and a watershed model includes functions for the estimation of model parameter values. Design criteria include ease of use, minimal equipment requirements, a generic...
Fossil Scenedesmus (Chlorococcales) from the Raton Formation, Colorado and New Mexico, U.S.A.
Fleming R. Farley
1989, Review of Palaeobotany and Palynology (59) 1-6
Fossilized coenobia of the alga Scenedesmus (Chlorococcales) were recovered in palynomorph assemblages from a lower Paleocene mudstone in the Upper Cretaceous and Paleocene Raton Formation of Colorado and New Mexico. This is the first description of fossil Scenedesmus from Tertiary rocks. Two species, Scenedesmus tschudyi sp. nov. and Scenedesmus hanleyi...
Effect of chlorine in clay-mineral specimens prepared on silver metal-membrane mounts for X-ray powder diffraction analysis
L.J. Poppe, J.A. Commeau, G.M. Pense
1989, Clays and Clay Minerals (37) 381-384
Silver metal-membrane filters are commonly used as substrates in the preparation of oriented clay-mineral specimens for X-ray powder diffraction (XRD). They are relatively unaffected by organic solvent treatments and specimens can be prepared rapidly. The filter mounts are adaptable to automatic sample changers, have few discrete reflections at higher 20...
A hybrid fast Hankel transform algorithm for electromagnetic modeling
W.L. Anderson
1989, Geophysics (54) 263-266
A hybrid fast Hankel transform algorithm has been developed that uses several complementary features of two existing algorithms: Anderson's digital filtering or fast Hankel transform (FHT) algorithm and Chave's quadrature and continued fraction algorithm. A hybrid FHT subprogram (called HYBFHT) written in standard Fortran-77 provides a simple user interface to...
Volume predictability of historical eruptions at Kilauea and Mauna Loa volcanoes
C.-Y. King
1989, Journal of Volcanology and Geothermal Research (38) 281-285
Cumulative volumes of eruptions at the Kilauea and Mauna Loa volcanoes in Hawaii appear to fit a volume-predictable model (i.e., the volume of an eruption episode is approximately proportional to the time since the previous episode) for many larger episodes during long periods of time (decades). This observation suggests that...
Rupture process of the Ms 6.6 Superstition Hills, California, earthquake determined from strong-motion recordings: application of tomographic source inversion
Arthur D. Frankel, Leif Wennerberg
1989, Bulletin of the Seismological Society of America (79) 515-541
We analyze strong-motion recordings of the Ms 6.6 Superstition Hills earthquake to determine the timing, location, spatial extent, and rupture velocity of the subevents that produced the bulk of the high-frequency (0.5 to 4 Hz) seismic energy radiated by this shock. The earthquake can be characterized by three principal subevents,...
Rocky Mountain Tertiary coal-basin models and their applicability to some world basins
R. M. Flores
1989, International Journal of Coal Geology (12) 767-798
Tertiary intermontane basins in the Rocky Mountain region of the United States contain large amounts of coal resources. The first major type of Tertiary coal basin is closed and lake-dominated, either mud-rich (e.g., North Park Basin, Colorado) or mud plus carbonate...
