Genetic links among fluid cycling, vein formation, regional deformation, and plutonism in the Juneau gold belt, southeastern Alaska
Lance D. Miller, Richard J. Goldfarb, George E. Gehrels, Lawrence W. Snee
1994, Geology (22) 203-206
Gold-bearing quartz vein systems in the Juneau gold belt formed within a 160-km- long by 5- to 8-km-wide zone along the western margin of the Coast Mountains, Alaska. Vein systems are spatially associated with shear zones adjacent to terrane-bounding, mid-Cretaceous thrust faults. Analysis of vein orientations and sense of shear...
Pathology of sea otters
T.P. Lipscomb, Richard K. Harris, A.H. Rebar, Brenda E. Ballachey, Romona J. Haebler
Thomas R. Loughlin, editor(s)
1994, Book chapter, Marine mammals and the <i>Exxon Valdez</i>
In the months following the Exxon Valdez oil spill (EVOS), 994 sea otters (Enhydra lutris) from oil-spill-affected areas died (Doroff et al. 1993). Carcasses collected from these areas and otters that died in rehabilitation centers are included in this number. The actual number that died was probably much greater.Within days...
A seabird monitoring program for the North Pacific
S.A. Hatcher, G.W. Kaiser, Alexander V. Kondratyev, G.V. Byrd
1994, Conference Paper, Transactions of the 59th North American wildlife and natural resources conference
Seabird monitoring is the accumulation of time series data on any aspect of seabird distribution, abundance, demography, or behavior. Typical studies include annual or less frequent measures of numbers or productivity; less commonly, the focus is on marine habitat use, phenology, food habits, or survival. The key requirement is that...
Continent-ocean transition in Alaska: The tectonic assembly of eastern Denalia
Thomas E. Moore, Arthur Grantz, S. M. Roeske
1994, Book chapter, Phanerozoic evolution of North American continent ocean transitions
Alaska is the eastern, subaerial part of a large subcontinent of distinctive tectonic character that serves as an isthmus between nuclear North America, with its fringing belt of allochthonous terranes, and the accreted terranes and volcanic belts that constitute northeastern Russia. Physiographically, this subcontinent, which we name Denalia, is a...
A genetic comparison of French alpine ibex populations (Capra ibex ibex) and implications for their management
M. Stuwe, Kim T. Scribner, D. Gauthier
1994, Travaux scientifiques du Parc National de la Vanoise (18) 71-76
No abstract available....
Genetic diversity in Arctic-nesting geese: Implications for management and conservation
Craig R. Ely, Kim T. Scribner
Richard E. McCabe, Kelly G. Wadsworth, editor(s)
1994, Conference Paper, Transactions of the fifty-ninth North American wildlife and natural resources conference
The North Pacific Rim harbors breeding populations of many unique wildlife resources, of which waterfowl are among the most abundant and taxonomically diverse. Arctic nesting geese in particular are wide-spread in distribution (Figure 1), and though only seasons residents, they have evolved many unique adaptations for breeding in northern latitudes....
Emission rates of sulfur dioxide and carbon dioxide from Redoubt Volcano, Alaska during the 1989-1990 eruptions
T. J. Casadevall, M.P. Doukas, C.A. Neal, R. G. McGimsey, C. A. Gardner
1994, Journal of Volcanology and Geothermal Research (62) 519-530
Airborne measurements of sulfur dioxide emission rates in the gas plume emitted from fumaroles in the summit crater of Redoubt Volcano were started on March 20, 1990 using the COSPEC method. During the latter half of the period of intermittent dome growth and destruction, between March 20 and mid-June 1990,...
Seismic evolution of the 1989-1990 eruption sequence of Redoubt Volcano, Alaska
J.A. Power, J.C. Lahr, R.A. Page, B. A. Chouet, C.D. Stephens, D.H. Harlow, T.L. Murray, J.N. Davies
1994, Journal of Volcanology and Geothermal Research (62) 69-94
Redoubt Volcano in south-central Alaska erupted between December 1989 and June 1990 in a sequence of events characterized by large tephra eruptions, pyroclastic flows, lahars and debris flows, and episodes of dome growth. The eruption was monitored by a network of five to nine seismic stations located 1 to 22...
Unusual ice diamicts emplaced during the December 15, 1989 eruption of Redoubt volcano, Alaska
R. B. Waitt, C. A. Gardner, T.C. Pierson, J. J. Major, C.A. Neal
1994, Journal of Volcanology and Geothermal Research (62) 409-428
Ice diamict comprising clasts of glacier ice and subordinate rock debris in a matrix of ice (snow) grains, coarse ash, and frozen pore water was deposited during the eruption of Redoubt Volcano on December 15, 1989. Rounded clasts of glacier ice and snowpack are as large as 2.5 m, clasts...
The geologic history of Redoubt Volcano, Alaska
A.B. Till, M. E. Yount, M.L. Bevier
1994, Journal of Volcanology and Geothermal Research (62) 11-30
Redoubt Volcano is a composite cone built on continental crust at the northeast end of the Aleutian arc. Magmas erupted at Redoubt are medium-K calc-alkaline basalts, andesites, and dacites. The eruptive history of the volcano can be divided into four parts: the early explosive stage, early cone-building stage, late cone-building...
Precursory swarms of long-period events at Redoubt Volcano (1989-1990), Alaska: Their origin and use as a forecasting tool
B. A. Chouet, R.A. Page, C.D. Stephens, J.C. Lahr, J.A. Power
1994, Journal of Volcanology and Geothermal Research (62) 95-135
During the eruption of Redoubt Volcano from December 1989 through April 1990, the Alaska Volcano Observatory issued advance warnings of several tephra eruptions based on changes in seismic activity related to the occurrence of precursory swarms of long-period (LP) seismic events (dominant period of about 0.5 s). The initial eruption...
Statistical forecasting of repetitious dome failures during the waning eruption of Redoubt Volcano, Alaska, February-April 1990
R.A. Page, J.C. Lahr, B. A. Chouet, J.A. Power, C.D. Stephens
1994, Journal of Volcanology and Geothermal Research (62) 183-196
The waning phase of the 1989-1990 eruption of Redoubt Volcano in the Cook Inlet region of south-central Alaska comprised a quasi-regular pattern of repetitious dome growth and destruction that lasted from February 15 to late April 1990. The dome failures produced ash plumes hazardous to airline traffic. In response to...
Magnetization and geochemistry of greigite-bearing Cretaceous strata, North Slope basin, Alaska
Richard L. Reynolds, Michele L. Tuttle, Cynthia A. Rice, Neil S. Fishman, John A. Karachewski, David M. Sherman
1994, American Journal of Science (294) 485-528
No abstract available....
What is the Alaska Volcano Observatory?
Christina A. Neal, Mike Doukas
1994, Fact Sheet 071-94
Explosive eruptions from Alaska's more than 40 active volcanoes pose a significant and recurring threat to communities, commerce, and aircraft in the north Pacific. The Alaska Volcano Observatory (AVO) was established in 1988 to carry out volcano monitoring, eruption notification, volcanic hazard assessments, and volcano research in Alaska. Effective notifications...
Blood sampling in juvenile buff-breasted sandpipers: Movement, weight change and survival
Richard B. Lanctot
1994, Journal of Field Ornithology (65) 534-542
The effect of blood sampling on juvenile Buff-breasted Sandpipers (Tryngites subruficollis) was evaluated by comparing movements, mass, and survival of 10 broods (37 chicks) that were bled and eight broods (31 chicks) that were not bled. Blood was sampled from the jugular vein of chicks when they weighed 9.1 ±...
Decoy trapping and rocket-netting for northern pintails in spring
J. Barry Grand, Thomas F. Fondell
1994, Journal of Field Ornithology (65) 402-405
Decoy traps and rocket-nets were compared for capturing Northern Pintails (Anas acuta: hereafter pintails) during May 1991 on the Yukon Flats, Alaska. Males were captured at similar rates using both methods (1.38 vs. 1.07 males/trap d, respectively), but baited rocket-nets were more efficient than decoy traps for capturing females (0.52...
Heterogeneity, Correlatives, and Proposed Stratigraphic Nomenclature of Hayes Tephra Set H, Alaska
J.R. Riehle
1994, Quaternary Research (41) 285-288
Several Holocene tephra deposits of Hayes volcano constitute a marker horizon in southern and east-central Alaska. Their identification is aided by high amphibole/pyroxene ratio and biotite in trace amounts, unique among Holocene tephra deposits of the region. However, correlations are obscured by chemical heterogeneity of the glass which occurs at...
Volcanic mixed avalanches: A distinct eruption-triggered mass-flow process at snow-clad volcanoes
T.C. Pierson, R. J. Janda
1994, Geological Society of America Bulletin (106) 1351-1358
A generally unrecognized type of pyroclastic deposit was produced by rapid avalanches of intimately mixed snow and hot pyroclastic debris during eruptions at Mount St. Helens, Nevado del Ruiz, and Redoubt Volcano between 1982 and 1989. These "mixed avalanches" traveled as far as 14 km at velocities up to ∼27...
Geochemical changes in crude oil spilled from the Exxon Valdez supertanker into Prince William Sound, Alaska
Frances D. Hostettler, Keith A. Kvenvolden
1994, Organic Geochemistry (21) 927-936
North Slope crude oil spilled from the T/V Exxon Valdez in March 1989 and contaminated about 500 km of Prince William Sound shoreline. Aliphatic and aromatic hydrocarbons in oil samples collected in August 1990 and June 1992 from beaches on six islands impacted by the spill have been compared with the hydrocarbons...
Geology of south-central Alaska
Warren J. Nokleberg, George Plafker, Frederic H. Wilson
1994, Book chapter, The geology of Alaska: Volume G-1 of Decade of North American Geology
South-central Alaska is defined as the region bounded by the Kuskokwim Mountains to the northwest, the basins north of the Alaska Range to the north, the Canadian border to the east, and the Chugach Mountains to the south (Fig. 1). This region, hereafter called the study area, includes the Alaska...
Geologic framework of the Aleutian arc, Alaska
Tracy L. Vallier, David W. Scholl, Michael A. Fisher, Terry R. Bruns, Frederic H. Wilson, Roland E. von Huene, Andrew J. Stevenson
1994, Book chapter, The geology of Alaska: Volume G-1 of Decade of North American Geology
The Aleutian arc is the arcuate arrangement of mountain ranges and flanking submerged margins that forms the northern rim of the Pacific Basin from the Kamchatka Peninsula (Russia) eastward more than 3,000 km to Cooke Inlet (Fig. 1). It consists of two very different segments that meet near Unimak Pass:...
Population cage experiments with a vertebrate: The temporal demography and cytonuclear genetics of hybridization on Gambusia fishes
Kim T. Scribner, John C. Avise
1994, Evolution (48) 155-171
The dynamics of mitochondrial and multilocus nuclear genotypic frequencies were monitored for 2 yr in experimental populations established with equal numbers of two poeciliid fishes (Gambusia affinis and Gambusia holbrooki) that hybridize naturally in the southeastern United States. In replicated "small-pool" populations (experiment I), 1018 sampled individuals at six time...
Phenotypic divergence of secondary sexual traits among sage grouse, Centrocercus urophasianus, populations
Jessica R. Young, Jerry W. Hupp, Jack W. Bradbury, Clait E. Braun
1994, Animal Behaviour (37) 1353-1362
Sage grouse, Centrocercus urophasianus, in an isolated montane basin near Gunnison, Colorado differ in several morphological and behavioural traits from conspecifics studied in other areas of the species' range. Both sexes in Gunnison are smaller than sage grouse elsewhere, and males possess differences in feather morphology as well. The mating...
Experimental recovery of sea otter carcasses at Kodiak Island, Alaska, following the Exxon Valdez oil spill
Anthony R. DeGange, Angela M. Doroff, Daniel H. Monson
1994, Marine Mammal Science (10) 492-496
ound, Alaska, spilling approximately 11 million barrels of crude oil. Oil wasdeposited on beaches nearly 700 km from the spill site (Galt and Payton 1990,Piatt et al. 1990), affecting thousands of hectares of sea otter(Enhydra lutris)habitat. Two of the principal limitations in determining the initial effects of theExxon Valdez oil ...
Variation in mitochondrial DNA and allozymes discriminates early and late forms of Chinook salmon Oncorhynchus tshawytscha in the Kenai and Kasilof Rivers, AK
Noah S. Adams, William J. Spearman, Carl V. Burger, Kenneth P. Currens, Carl B. Schreck, Hiram W. Li
1994, Canadian Journal of Fisheries and Aquatic Sciences (51) 172-181
Genetic differences between early and late forms of Alaskan chinook salmon (Oncorhynchus tshawytscha) were identified using two genetic approaches: mitochondrial DNA (mtDNA) analysis, and protein electrophoresis. Study populations consisted of early and late runs in each of the Kenai and Kasilof rivers in Alaska, and a population from the Minam...
