Magma supply dynamics at Westdahl volcano, Alaska, modeled from satellite radar interferometry
Z. Lu, Timothy Masterlark, D. Dzurisin, Russ Rykhus, C. Wicks Jr.
2003, Journal of Geophysical Research B: Solid Earth (108)
A group of satellite radar interferograms that span the time period from 1991 to 2000 shows that Westdahl volcano, Alaska, deflated during its 1991-1992 eruption and is reinflating at a rate that could produce another eruption within the next several years. The rates of inflation and deflation are approximated by...
Molecular status of the dusky Canada goose (Branta canadensis occidentalis): A genetic assessment of a translocation effort
Sandra L. Talbot, John M. Pearce, Barbara J. Pierson, Dirk V. Derksen, Kim T. Scribner
2003, Conservation Genetics (4) 367-381
Until recently, the dusky Canada goose (Branta canadensis occidentalis) was managedas one breeding population from the CopperRiver Delta (CRD), Alaska. Population numberson the CRD have declined precipitously over thelast three decades, due in part to changes inhabitat. In 1981, a pair of Canada geese,presumably B.c. occidentalis, wasreported...
A new species of Moraria (Crustacea: Copepoda: Harpacticoida) from the Laurentian Great Lakes
Janet W. Reid, Lynn T. Lesko
2003, Zootaxa (205) 1-19
Moraria hudsoni n. sp. is described from Trails End Bay in Lake Michigan and Prentiss Bay in Lake Huron, Michigan, USA. The new species differs from its congeners in chaetotaxy, body ornamentation, and other characters. We review published records of members of Moraria from North and Central America;...
An adenovirus linked to mortality and disease in long-tailed ducks (Clangula hyemalis) in Alaska
Tuula E. Hollmén, J. C. Franson, Paul L. Flint, J.B. Grand, Richard B. Lanctot, D. E. Docherty, H.M. Wilson
2003, Avian Diseases (47) 1434-1440
An adenovirus was isolated from intestinal samples of two long-tailed ducks (Clangula hyemalis) collected during a die-off in the Beaufort Sea off the north coast of Alaska in 2000. The virus was not neutralized by reference antiserum against known group I, II, or III avian adenoviruses and may represent a...
Immobilization of free-ranging male pacific walruses (Odobenus rosmarus divergens) with carfentanil citrate and naltrexone hydrochloride
Daniel M. Mulcahy, P.A. Tuomi, Gerald W. Garner, Chadwick V. Jay
2003, Marine Mammal Science (19) 846-850
The major challenges in immobilization of free-ranging walruses (Odobenus rosmarus divergens) are to produce a deep level of anesthesia very quickly (to avoid darted animals from entering the water and drowning), and to find a drug or drug combination that requires only a small volume to be delivered by dart,...
Basin-centered asperities in great subduction zone earthquakes: A link between slip, subsidence, and subduction erosion?
R.E. Wells, R.J. Blakely, Y. Sugiyama, D.W. Scholl, P.A. Dinterman
2003, Journal of Geophysical Research B: Solid Earth (108)
Published areas of high coseismic slip, or asperities, for 29 of the largest Circum-Pacific megathrust earthquakes are compared to forearc structure revealed by satellite free-air gravity, bathymetry, and seismic profiling. On average, 71% of an earthquake's seismic moment and 79% of its asperity area occur beneath the prominent gravity low...
Depositional environments and processes in Upper Cretaceous nonmarine and marine sediments, Ocean Point dinosaur locality, North Slope, Alaska
R. L. Phillips
2003, Cretaceous Research (24) 499-523
A 178-m-thick stratigraphic section exposed along the lower Colville River in northern Alaska, near Ocean Point, represents the uppermost part of a 1500 m Upper Cretaceous stratigraphic section. Strata exposed at Ocean Point are assigned to the Prince Creek and Schrader Bluff formations. Three major depositional environments are identified consisting,...
Observations of a live Glaucous-winged Gull chick in an active Bald Eagle nest
R.G. Anthony, J.T. Faris
2003, The Wilson Bulletin (115) 481-483
We report an apparent nonlethal predation attempt on and subsequent adoption of a Glaucous-winged Gull (Larus glaucescens) chick by a pair of Bald Eagles (Haliaeetus leucocephalus) in the Aleutian Archipelago, Alaska. To the best of our knowledge, this is the first report of a live Glaucous-winged Gull chick...
Return to Glacier Bay
James L. Bodkin
2003, Alaska Park Science (2) 5-12
Seven species of pigeons and doves were cultured for yeasts in the upper digestive tract. The following list gives the isolation rate for each columbid species and the yeasts cultured from them: feral pigeon Columba Livia (Gmelin) 95% -Candida albicans (Robin) Berkhout, C. tropicalis (Castellani) Berkhout, C. krusei (Cast.) Berkhout,...
Multiple seismogenic processes for high-frequency earthquakes at Katmai National Park, Alaska: Evidence from stress tensor inversions of fault-plane solutions
Seth C. Moran
2003, Bulletin of the Seismological Society of America (93) 94-108
The volcanological significance of seismicity within Katmai National Park has been debated since the first seismograph was installed in 1963, in part because Katmai seismicity consists almost entirely of high-frequency earthquakes that can be caused by a wide range of processes. I investigate this issue by determining 140 well-constrained first-motion...
A probable extralimital postbreeding assembly of bufflehead Bucephala albeola in southcentral North Dakota, USA, 1994-2002
L.D. Igl
2003, Wildfowl (54) 81-93
The Bufflehead Bucephala albeola predominantly in Canada and Alaska (USA). Evidence suggests that the species may have recently expanded its breeding range southward into central and south-central North Dakota. This paper presents data on observations of Buffleheads during the breeding season in Kidder County, North Dakota, 1994-2002, and discusses the...
Assessing chick growth from a single visit to a seabird colony
J. Benson, R.M. Suryan, John F. Piatt
2003, Marine Ornithology: Journal of Seabird Research and Conservation (31) 181-184
We tested an approach to the collection of seabird chick growth data that utilizes a one-time sampling of chick measurements obtained during a single visit to a seabird colony. We assessed the development of Black-legged Kittiwake Rissa tridactyla chicks from a sample of measurements made on a single day during...
Deciphering the social structure of Marbled Murrelets from behavioral observations at sea
Suzann G. Speckman, John F. Piatt, Alan M. Springer
2003, Waterbirds (26) 266-274
We surveyed Marbled Murrelets (Brachyramphus marmoratus) daily from small boats in Auke Bay and Fritz Cove, Alaska, from May through August 1992 and 1993. Differences in numbers of juveniles and in the timing of their presence in the study area between the two years indicated that breeding phenology was late...
High precision earthquake locations reveal seismogenic structure beneath Mammoth Mountain, California
Stephanie G. Prejean, Anna Stork, William L. Ellsworth, David Hill, Bruce R. Julian
2003, Geophysical Research Letters (30)
In 1989, an unusual earthquake swarm occurred beneath Mammoth Mountain that was probably associated with magmatic intrusion. To improve our understanding of this swarm, we relocated Mammoth Mountain earthquakes using a double difference algorithm. Relocated hypocenters reveal that most earthquakes occurred on two structures, a near-vertical plane at 7–9 km...
Competition between Asian pink salmon (Oncorhynchus gorbuscha) and Alaskan sockeye salmon (O. nerka) in the North Pacific Ocean
G.T. Ruggerone, M. Zimmermann, K.W. Myers, J.L. Nielsen, D.E. Rogers
2003, Fisheries Oceanography (12) 209-219
The importance of interspecific competition as a mechanism regulating population abundance in offshore marine communities is largely unknown. We evaluated offshore competition between Asian pink salmon and Bristol Bay (Alaska) sockeye salmon, which intermingle in the North Pacific Ocean and Bering Sea, using the unique biennial abundance cycle of Asian...
Landslides and liquefaction triggered by the M 7.9 denali fault earthquake of 3 November 2002
E. L. Harp, R.W. Jibson, R. E. Kayen, D. K. Keefer, B.L. Sherrod, G. A. Carver, B.D. Collins, R.E.S. Moss, N. Sitar
2003, GSA Today (13) 4-10
The moment magnitude (M) 7.9 Denali Fault earthquake in Alaska of 3 November 2002 triggered an unusual pattern of landslides and liquefaction effects. The landslides were primarily rock falls and rock slides that ranged in volume from a few cubic meters to the 40 million-cubic-meter rock avalanche that covered much...
Correlates to survival of juvenile sea otters in Prince William Sound, Alaska, 1992-1993
Brenda E. Ballachey, James L. Bodkin, S. Howlin, A. M. Doroff, A.H. Rebar
2003, Canadian Journal of Zoology (81) 1494-1510
We estimated survival of sea otters (Enhydra lutris) for 1 year post weaning during 1992-1993 in Prince William Sound (PWS), location of the 1989 Exxon Valdez oil spill. We sampled 38 pups in eastern PWS (EPWS), an unoiled area occupied by sea otters for <15 years, and 33 pups from...
Aggradation of gravels in tidally influenced fluvial systems: Upper Albian (Lower Cretaceous) on the cratonic margin of the North American Western Interior foreland basin
Richard L. Brenner, Greg A. Ludvigson, B.L. Witzke, P.L. Phillips, T. S. White, David F. Ufnar, Luis A. Gonzalez, R. M. Joeckel, A. Goettemoeller, B.R. Shirk
2003, Cretaceous Research (24) 439-448
Alluvial conglomerates were widely distributed around the margin of the Early Cretaceous North American Cretaceous Western Interior Seaway (KWIS). Conglomerates, sandstones, and lesser amounts of mudstones of the upper Albian Nishnabotna Member of the Dakota Formation were deposited as fill-in valleys that were incised up to 80 m into upper...
Marrow fat deposition and skeletal growth in caribou calves
Layne G. Adams
2003, Journal of Wildlife Management (67) 20-24
I evaluated rates of marrow fat deposition and skeletal growth of caribou (Rangifer tarandus granti) calves through 20 days of age at Denali National Park, Alaska, USA. Both were negatively correlated with late winter snowfall, indicating the prolonged effects of maternal undernutrition following severe winters. Using regression analyses, I found...
Morphological traits of Pacific Flyway Canada Geese as an aid to subspecies identification and management
John M. Pearce, Karen S. Bollinger
2003, Journal of Field Ornithology (74) 357-369
Subspecies of Canada Geese (Branta canadensis) exhibit wide variation in body size across their range. To monitor harvest levels in the Pacific Flyway, biologists commonly use culmen length and plumage color to differentiate among subspecies on sympatric wintering grounds. Among the four large-bodied Pacific subspecies (B. c. parvipes, B. c....
Coalbed methane, Cook Inlet, south-central Alaska: A potential giant gas resource
Scott L. Montgomery, Charles E. Barker
2003, American Association of Petroleum Geologists Bulletin (87) 1-13
Cook Inlet Basin of south-central Alaska is a forearc basin containing voluminous Tertiary coal deposits with sufficient methane content to suggest a major coalbed gas resource. Coals ranging in thickness from 2 to 50 ft (0.6 to 15 m) and in gas content from 50 to 250 scf/ton (1.6 to...
Stratigraphy and palaeoclimatic significance of Late Quaternary loess-palaeosol sequences of the Last Interglacial-Glacial cycle in central Alaska
D.R. Muhs, T. A. Ager, E. Arthur Bettis III, J. McGeehin, J.M. Been, J. E. Beget, M.J. Pavich, Thomas W. Stafford Jr., D.A.S.P. Stevens
2003, Quaternary Science Reviews (22) 1947-1986
Loess is one of the most widespread subaerial deposits in Alaska and adjacent Yukon Territory and may have a history that goes back 3 Ma. Based on mineralogy and major and trace element chemistry, central Alaskan loess has a composition that is distinctive from other loess bodies of the world,...
Two distinct phylogenetic clades of infectious hematopoietic necrosis virus overlap within the Columbia River basin
K.A. Garver, R.M. Troyer, Gael Kurath
2003, Diseases of Aquatic Organisms (55) 187-203
Infectious hematopoietic necrosis virus (IHNV), an aquatic rhabdovirus, causes a highly lethal disease of salmonid fish in North America. To evaluate the genetic diversity of IHNV from throughout the Columbia River basin, excluding the Hagerman Valley, Idaho, the sequences of a 303 nt region of the glycoprotein gene (mid-G) of...
The 1997 eruption of Okmok Volcano, Alaska: A synthesis of remotely sensed imagery
M.R. Patrick, J. Dehn, K.R. Papp, Z. Lu, K. Dean, L. Moxey, P. Izbekov, R. Guritz
2003, Journal of Volcanology and Geothermal Research (127) 87-105
Okmok Volcano, in the eastern Aleutian Islands, erupted in February and March of 1997 producing a 6-km-long lava flow and low-level ash plumes. This caldera is one of the most active in the Aleutian Arc, and is now the focus of international multidisciplinary studies. A synthesis of remotely sensed data...
Source model for the Mw 6.7, 23 October 2002, Nenana Mountain earthquake (Alaska) from InSAR
Tim J. Wright, Z. Lu, Charles Wicks
2003, Geophysical Research Letters (30) 12-1-12-4
The 23 October 2002 Nenana Mountain Earthquake (Mw ∼ 6.7) occurred on the Denali Fault (Alaska), to the west of the Mw ∼ 7.9 Denali Earthquake that ruptured the same fault 11 days later. We used 6 interferograms, constructed using radar images from the Canadian Radarsat-1 and European ERS-2 satellites,...
