Recent trends in the west Greenland salmon fishery, and implications for Thick-billed Murres
John F. Piatt, David G. Reddin
1982, Conference Paper, Marine birds: Their feeding ecology and commercial fisheries relationships
In the late 1960s and early 1970s, a high net-mortality of seabirds, particularly Thick-billed Murres (Uria lomvia), was associated with the west Greenland salmon fishery. Since 1972, the domestic fishery has been controlled by quotas and fishery opening dates and non-Greenlandic offshore drift-net fishery was phased out in 1975. These...
Strata-bound sulfide deposits, wall-rock alteration, and associated tin-bearing minerals in the Carolina slate belt, South Carolina and Georgia
Henry Bell
1982, Economic Geology (77) 294-311
Massive sulfide deposits, gold deposits, and tin-bearing minerals occur in rocks of the Carolina slate belt in South Carolina and adjacent Georgia. The belt of greenschist metamorphic rocks in which the ore deposits occur is mostly Cambrian in age. It is divided into an upper metasedimentary unit and a lower...
Kinematic evolution of the junction of the San Andreas, Garlock, and Big Pine faults, California
Robert G. Bohannon, David G. Howell
1982, Geology (10) 358-363
If the San Andreas fault with about 300 km of right slip, the Carlock fault with about 60 km of left slip, and the Big Pine fault with about 15 km of left slip are considered to have been contemporaneously active, a space problem at their high-angle junctions becomes apparent....
The Georges Bank monitoring program: analysis of trace metals in bottom sediments
Michael H. Bothner
1982, Report
No abstract available....
Iridium abundance measurements across the Cretaceous/Tertiary boundary in the San Juan and Raton Basins of northern New Mexico
C. J. Orth, J. S. Gilmore, J.D. Knight, R.H. Tschudy, C. L. Pillmore, James E. Fassett
1982, GSA Special Papers (190) 423-433
During the past year we have been measuring trace element abundances and searching for anomalously high iridium (Ir) concentrations in continental sedimentary rocks that span the Cretaceous-Tertiary boundary in the Raton and San Juan Basins of northern New Mexico and southern Colorado. Using neutron activation and radiochemical separations, we have...
Observations of strain accumulation across the San Andreas fault near Palmdale, California, with a two-color geodimeter
J. O. Langbein, Mark F. Linker, Art McGarr, L.E. Slater
1982, Science (218) 1217-1219
Two-color laser ranging measurements during a 15-month period over a geodetic network spanning the San Andreas fault near Palmdale, California, indicate that the crust expands and contracts aseismically in episodes as short as 2 weeks. Shear strain parallel to the fault has accumulated monotonically since November 1980,...
Triggering of large earthquakes by magma-chamber inflation, Izu Peninsula (Japan)
Wayne R. Thatcher, James C. Savage
1982, Geology (10) 637-640
A close spatial and temporal association between three aseismic uplift episodes and subsequent large (M ≈ 7) earthquakes on the Izu Peninsula, Japan, suggests a causal relation. Quaternary geology, as well as studies by other workers, indicates a volcanic origin for the observed uplift, and we use a simple inflation...
Subsurface valleys and geoarcheology of the eastern Sahara revealed by shuttle radar
J.F. McCauley, G. G. Schaber, C. S. Breed, M. J. Grolier, C.V. Haynes, B. Issawi, C. Elachi, R. Blom
1982, Science (218) 1004-1020
The shuttle imaging radar (SIR-A) carried on the space shuttle Columbia in November 1981 penetrated the extremely dry Selima Sand Sheet, dunes, and drift sand of the eastern Sahara, revealing previously unknown buried valleys, geologic structures, and possible Stone Age occupation sites. Radar responses from bedrock and...
Shuttle imaging radar experiment
C. Elachi, W.E. Brown, J.B. Cimino, T. Dixon, D.L. Evans, J.P. Ford, R.S. Saunders, C. Breed, H. Masursky, J.F. McCauley, G. Schaber, L. Dellwig, A. England, H. MacDonald, P. Martin-Kaye, F. Sabins
1982, Science (218) 996-1003
The shuttle imaging radar (SIR-A) acquired images of a variety of the earth's geologic areas covering about 10 million square kilometers. Structural and geomorphic features such as faults, folds, outcrops, and dunes are clearly visible in both tropical and arid regions. The combination of SIR-A and Seasat...
Uranium in spring water and bryophytes at basin creek in central idaho
H.T. Shacklette, J. A. Erdman
1982, Journal of Geochemical Exploration (17) 221-236
Arkosic sandstones and conglomerates of Tertiary age beneath the Challis Volcanics of Eocene age at Basin Creek, 10 km northeast of Stanley, Idaho, contain uranium-bearing vitrainized carbon fragments. The economic potential of these sandstones and conglomerates is currently being assessed. Springs abound at the contacts of rock units, and water...
Mineral identification from orbit: Initial results from the shuttle multispectral infrared radiometer
Alexander F.H. Goetz, L. C. Rowan, M.J. Kingston
1982, Science (218) 1020-1024
A shuttle-borne radiometer containing ten channels in the reflective infrared has demonstrated that direct identification of carbonates and hydroxyl-bearing minerals is possible by remote measurement from Earth orbit. ...
Auditory evoked potentials in the West Indian Manatee (Sirenia: Trichechus manatus)
Theodore H. Bullock, Thomas J. O'Shea, Michael C. McClune
1982, Journal of Comparative Physiology A (148) 547-554
Potentials evoked by clicks and tone pips were recorded by fine wires inserted extracranially in four West Indian manatees (Trichechus manatus) in air. Sounds were delivered via padded ear phones. Averaging a few thousand trials at 20/s reveals early peaks at N5.4 (‘vertex’ negativity to a frontal reference, at 5.4 ms),...
U-Pb ages of uranium ores in the Churchrock uranium district, New Mexico
K.R. Ludwig, Bruce Rubin, Neil Fishman, Richard L. Reynolds
1982, Economic Geology (77) 1942-1945
No abstract available....
The United Kingdom-Caltech asteroid survey
S. J. Bus, E. F. Helin, R. S. Dunbar, Eugene Merle Shoemaker, J. Dawe, J. Barrow, M. Hartley, D. Morgan, K. Russell, A. Savage
1982, Book chapter, Reports of Planetary Programs, 1982
No abstract available....
Status of Alaska sea otter populations and developing conflicts with fisheries
1982, Conference Paper, Transactions of the 47th North American wildlife and national resources conference
No abstract available....
Use and interpretation of statistics in wildlife journals
Thomas C. Tacha, William D. Warde, Kenneth P. Burnham
1982, Wildlife Society Bulletin (10) 355-362
Use and interpretation of statistics in wildlife journals are reviewed, and suggestions for improvement are offered. Populations from which inferences are to be drawn should be clearly defined, and conclusions should be limited to the range of the data analyzed. Authors should be careful to avoid improper methods...
Volcanism in ice on Europa
A. F. Cook, Eugene Merle Shoemaker, L. A. Soderblom, K. F. Mullins, R. Fiedler
1982, Book chapter, Reports of Planetary Programs, 1982
No abstract available....
Magnitude > or = 6.0 earthquakes
Henry Spall, editor(s)
1982, Earthquake Information Bulletin (USGS) (14) 192-195
No abstract available....
Ice sculpture in the Martian outflow channels
Baerbel K. Lucchitta
1982, Journal of Geophysical Research B: Solid Earth (87) 9951-9973
Many landforms in Martian outflow channels have characteristics that suggest sculpture by glaciers, ice streams, or ice sheets. Viking Orbiter and terrestrial satellite images were examined at similar resolution to compare features of the Martian outflow channels to features produced by the movement of ice on earth. Many resemblances were...
Reply to comments of S.M. Johnson
P. K. Theobald Jr.
1982, Journal of Geochemical Exploration (17) 163-164
No abstract available. ...
Adsorption of natural dissolved organic matter at the oxide/water interface
James A. Davis
1982, Geochimica et Cosmochimica Acta (46) 2381-2393
Natural organic matter is readily adsorbed by alumina and kaolinite in the pH range of natural waters. Adsorption occurs by complex formation between surface hydroxyls and the acidic functional groups of the organic matter. Oxides with relatively acidic surface hydroxyls, e.g. silica, do not react strongly with the organic matter....
Gas exchange characteristics of the submerged aquatic Crassulacean acid metabolism plant, Isoetes howellii
Jon E. Keeley, G. Bowes
1982, Plant Physiology (70) 1455-1458
The submerged aquatic plant Isoetes howellii Engelmann possesses Crassulacean acid metabolism (CAM) comparable to that known from terrestrial CAM plants. Infrared gas analysis of submerged leaves showed Isoetes was capable of net CO2 uptake in both light and dark. CO2 uptake rates were a function of CO2 levels in the medium. At 2,500 microliters CO2 per liter (gas...
Active geologic processes in Barrow Canyon, northeast Chukchi Sea
Stephen Eittreim, Arthur Grantz, Jonathan Greenberg
1982, Marine Geology (50) 61-76
Circulation patterns on the shelf and at the shelf break appear to dominate the Barrow Canyon system. The canyon's shelf portion underlies and is maintained by the Alaska Coastal Current (A.C.C.), which flows northeastward along the coast toward the northeast corner of the broad Chukchi Sea. Offshelf and onshelf advective...
Geophysics, tectonics and mineral deposits of Africa—Preface
David A. Hastings
1982, Geoexploration (20) 198-199
No abstract available....
Natural groundwater recharge in an upland area of central North Dakota, U.S.A.
B.W. Rehm, S.R. Moran, G.H. Groenewold
1982, Journal of Hydrology (59) 293-314
The magnitude of groundwater recharge to coal aquifers in a 150-km2 area in west-central North Dakota was determined using three separate approaches: (1) the net water level rise in water-table wells; (2) calculations of the fluid flux between nested piezometers, using the Darcy equation and measured values of hydraulic conductivity and...
