Winter diets of common murres and marbled murrelets in Kachemak Bay, Alaska
Gerald A. Sanger
1987, The Condor (89) 426-430
Knowledge of the winter diets of seabirds in high latitudes like Alaskan waters has been an elusive aspect of their biology. Scanty information on winter diets of Common Murres (Uria aalge) are available from the Pribilof Islands (Preble and McAtee 1923), California (Baltz and Morejohn 1977), Kodiak Island (Kraznow and...
Chemistry and mineralogy of pyrite-enriched sediments at a passive margin sulfide brine seep: Abyssal Gulf of Mexico
R.F. Commeau, C. K. Paull, J.A. Commeau, L.J. Poppe
1987, Earth and Planetary Science Letters (82) 62-74
Pyrite is rapidly accumulating at the contact between the Cretaceous limestones of the Florida Platform and the hemipelagic sediments of the abyssal Gulf of Mexico. Sediments sampled with the submersible “Alvin” in 3266 m of water are associated with a dense...
Use of slope, aspect, and elevation maps derived from digital elevation model data in making soil surveys
A. A. Klingebiel, E. H. Horvath, D. G. Moore, W.U. Reybold
1987, Book chapter, Soil survey techniques, SSSA Special Publication 20
Maps showing different classes of slope, aspect, and elevation were developed from U.S. Geological Survey digital elevation model data. The classes were displayed on clear Mylar at 1:24 000-scale and registered with topographic maps and orthophotos. The maps were used with aerial photographs, topographic maps, and other resource data to...
Adult survival and productivity of Northern Fulmars in Alaska
Scott A. Hatch
1987, The Condor (89) 685-696
The population dynamics of Northern Fulmars (Fulmarus glacialis) were studied at the Semidi Islands in the western Gulf of Alaska. Fulmars occurred in a broad range of color phases, and annual survival was estimated from the return of birds in the rarer plumage classes. A raw estimate of mean annual...
Normal faulting of the Daiichi-Kashima Seamount in the Japan Trench revealed by the Kaiko I cruise, Leg 3
K. Kobayashi, J.-P. Cadet, J. Aubouin, J. Boulegue, J. Dubois, Roland E. von Huene, L. Jolivet, T. Kanazawa, J. Kasahara, K.-i. Koizumi, S. Lallemand, Y. Nakamura, G. Pautot, Kiyoshi Suyehiro, S. Tani, H. Tokuyama, T. Yamazaki
1987, Earth and Planetary Science Letters (83) 257-266
A detailed topographic and geophysical survey of the Daiichi-Kashima Seamount area in the southern Japan Trench, northwestern Pacific margin, clearly defines a high-angle normal fault which splits the seamount into two halves. A fan-shaped zone was investigated along 2–4 km spaced,...
Phytoplankton productivity in relation to light intensity: A simple equation
D. H. Peterson, M.J. Perry, K.E. Bencala, M.C. Talbot
1987, Estuarine, Coastal and Shelf Science (24) 813-832
A simple exponential equation is used to describe photosynthetic rate as a function of light intensity for a variety of unicellular algae and higher plants where photosynthesis is proportional to (1-e−β1). The parameter β (=Ik−1">=Ik−1) is derived by a simultaneous curve-fitting method, where I is incident...
Tectonic morphology of offshore Eel River basin, California
M.E. Field, J.V. Gardner, D.E. Drake, D.A. Caccione
1987, Conference Paper, Tectonics, sedimentation and evo lution of the Eel River and associated coastal basins of Northern California
No abstract available ...
Crude oil identification with electrothermal vaporization-multiple wavelength absorption spectrometry
J.M. Shekiro Jr., R. K Skogerboe, Howard E. Taylor
1987, Chemosphere (16) 983-988
A spectrometric technique utilizing electrothermal vaporization (graphite furnace) and gas phase-multiple wavelength absorption with photodiode array detection is used to characterize crude oil....
Lower Paleozoic carbonate rocks of the Baird Mountains quadrangle, western Brooks Range, Alaska
Julie A. Dumoulin, Anita G. Harris
Irvin L. Tailleur, Paul Weimer, editor(s)
1987, Book chapter, Alaskan North Slope Geology, Volumes I and II (SEPM Book 50)
Lower Paleozoic carbonate rocks in the Baird Mountains quadrangle form a relatively thin, chiefly shallow-water succession that has been thrust-faulted and metamorphosed to blueschist and greenschist facies. Although this succession was thought to be mostly Devonian until recently, a large part of it is in fact pre-Silurian in age.Middle and...
Feeding ecology of Alcidae in the eastern North Pacific Ocean
K. Vermeer, S.G. Sealy, G.A. Sanger
J.P. Croxall, editor(s)
1987, Book chapter, Seabirds: Feeding biology and role in marine ecosystems
No abstract available....
Evolutionary ecology and the optimality assumption
J.M. Emlen
1987, Book chapter, The Latest on the Best, Essays on Evolution and Optimality
No abstract available ...
Earthquakes, January-February 1987
W. J. Person
1987, Earthquakes & Volcanoes (USGS) (19) 102-105
There were two major earthquakes (7.0-7.9) during the first two months of the year. The first, on January 30 in the South Sandwich Islands region, was in an unpopulated area; the second was on February 8 in New Guinea. In the United States the largest earthquake during this reporting period was...
System designed for issuing landslide alerts in the San Francisco Bay area
D. Finley
1987, Earthquakes & Volcanoes (USGS) (19) 171-173
A system for forecasting landslides during major storms has been developed for the San Francisco Bay area by the U.S Geological Survey and was successfully tested during heavy storms in the bay area during February 1986. Based on the forecasts provided by the USGS, the National Weather Service (NWS) included...
Earthquakes, September-October 1987
W. J. Person
1987, Earthquakes & Volcanoes (USGS) (19) 180-183
One hundred years of earthquake recording at the University of California
B. A. Bolt
1987, Earthquakes & Volcanoes (USGS) (19) 88-92
Seismology is a relatively new science, so there is special reason to celebrate the first permanent earthquake observatories in America, set up by the University of California 100 years ago. The best seismographs then available arrived from England in 1887 and were installed at Lick Observatory on Mt.Hamilton and at the...
Gulf trough: The Atlantic connection
Peter Popenoe, Vernon J. Henry, Faisal M. Idris
1987, Geology (15) 327-332
Analyses of seismic reflection profiles and stratigraphic data indicate a continuation of the Gulf trough trend across eastern South Carolina and offshore between Cape Fear and Cape Hatteras, North Carolina. Seismic profiles show a linear northeast-trending zone of nondeposition and erosion and areas...
Mechanics of gravitational spreading of steep-sided ridges («sackung»)
W. Z. Savage, D. J. Varnes
1987, Bulletin of the International Association of Engineering Geology (35) 31-36
Large-scale gravitational spreading of steep-sided ridges characterized by linear fissures, trenches, and uphill-facing scarps high on the sides and tops of ridges are known worldwide. Such spreading, termed sackung, is commonly attributed to pervasive plastic deformation of a rock mass, and is here analyzed as such. Beginning with a previously...
Variable delay miniservo-control unit
M.A. Uhrich
1987, WRD Instrument News
No abstract available. ...
Compilation of hydrologic data for the Edwards aquifer, San Antonio area, Texas, 1985, with 1934-85 summary
G. B. Ozuna, G.M. Nalley, M. N. Bowman
1987, Edwards Underground Water District Bulletin 45
No abstract available....
Earthquakes, March-April 1987
W. J. Person
1987, Earthquakes & Volcanoes (USGS) (19) 106-110
There was one major earthquake (7.0-7.9) during this reporting period. This quake was located near the coast of northern Chile and had a magnitude of 7.3. Destructive earthquakes also struck Ecuador, Japan, Indonesia and New Zealand. There were no damaging earthquakes in the United States during this period. ...
Earthquakes, July-August 1987
W. J. Person
Henry Spall, editor(s)
1987, Earthquakes & Volcanoes (USGS) (19) 150-153
There was one major earthquakes (7.0-7.9) during this reporting period, a magnitude 7.1 on July 6 in the Vanuatu Islands of teh South Pacific Ocean. In the United States, a strong earthquake, a magnitude 6.0, occurred on July 31 near the coast of northern California and caused some damage...
Earthquakes; November-December 1987
W. J. Person
1987, Earthquakes & Volcanoes (USGS) (19) 218-221
There were two major earthquakes during the last two months of the year, both in the Gulf of Alaska. Earthquake-related deaths were reported from Mexico, Japan and Indonesia. Southern California was hit by two strong earthquakes; both caused damage and some injuries. ...
NCEER seminars on earthquakes
J. Pantelic
1987, Earthquakes & Volcanoes (USGS) (19) 178-179
In May of 1986, the National Center for Earthquake Engineering Research (NCEER) in Buffalo, New York, held the first seminar in its new monthly forum called Seminars on Earthquakes. The Center's purpose in initiating the seminars was to educate the audience about earthquakes, to facilitate cooperation between the NCEER and...
Earthquakes, November-December 1986
W. J. Person
1987, Earthquakes & Volcanoes (USGS) (19) 77-79
There was one major earthquake (7.0-7.9) during this reporting period in Taiwan, a magnitude 7.8, which caused deaths and consideralbe damage. Earthquake-related deaths were reported in Bulgaria and in a mine in Poland. There was no significant earthquakes in the United States. ...
Use of low-altitude aerial photography to identify submersed aquatic macrophytes
Donald W. Schloesser, Bruce A. Manny, Charles L. Brown, Eugene Jaworski
1987, Conference Paper, Color aerial photography in the plant sciences and related fields : proceedings of the Tenth Biennial Workshop on Color Aerial Photography in the Plant Sciences
The feasibility of using low-altitude aerial photography to identify beds of submersed macrophytes is demonstrated. True color aerial photos and collateral ground survey information for submersed aquatic macrophyte beds at 10 sites in the St.Clair-Detroit River system were obtained in September 1978. Using the photos and collateral ground survey information,...
