Seismic swarm associated with the 2008 eruption of Kasatochi Volcano, Alaska: earthquake locations and source parameters
Natalia G. Ruppert, Stephanie G. Prejean, Roger A. Hansen
2011, Journal of Geophysical Research (116)
An energetic seismic swarm accompanied an eruption of Kasatochi Volcano in the central Aleutian volcanic arc in August of 2008. In retrospect, the first earthquakes in the swarm were detected about 1 month prior to the eruption onset. Activity in the swarm quickly intensified less than 48 h prior to...
Time constraints in temperate-breeding species: Influence of growing season length on reproductive strategies
K. E. B. Gurney, Russell G. Clark, Stuart Slattery, N. V. Smith-Downey, Jordan I. Walker, L. M. Armstrong, S. E. Stephens, Michael J. Petrula, R. M. Corcoran, K. Martin, K. A. Degroot, Rodney W. Brook, Alan D. Afton, K. Cutting, J. M. Warren, M. Fournier, David N. Koons
2011, Ecography (34) 628-636
Organisms that reproduce in temperate regions have limited time to produce offspring successfully, and this constraint is expected to be more pronounced in areas with short growing seasons. Information concerning how reproductive ecology of endotherms might be influenced by growing season length (GSL) is rare, and species that breed over...
Migration And wintering areas Of Glaucous-winged Gulls From south-central Alaska
Scott A. Hatch, V.A. Gill, Daniel M. Mulcahy
2011, The Condor (113) 340-351
We used satellite telemetry to investigate the migration patterns and wintering areas of Glaucous-winged Gulls (Larus glaucescens) from Middleton Island, Alaska, where this species' population increased tenfold from the 1970s to the 1990s. Fall migration spanned 11 weeks, including numerous stopovers en route, apparently for feeding. Spring migration from wintering...
Fine scale movements and habitat use of black brant during the flightless Wing Molt in Arctic Alaska
Tyler L. Lewis, Paul L. Flint, Dirk V. Derksen, Joel A. Schmutz
2011, Waterbirds (34) 177-185
Thousands of Black Brant (Branta bernicla nigricans) migrate annually to the Teshekpuk Lake Special Area (TLSA), Alaska, to undergo the flightless wing molt on tundra lakes and wetlands. GPS transmitters were attached to Brant over two summers (2007–2008) to examine patterns of movement and habitat use of molting Brant, including...
Marine West Coast forests
Steven S. Perakis, Linda H. Geiser, Erik A. Lilleskov
Linda H. Pardo, Molly J. Robin-Abbott, Charles T. Driscoll, editor(s)
2011, General Technical Report NRS-80-9
No abstract available....
Attempted surgical correction of single- and multiyear post-ovulatory egg stasis in yellow and red Irish lords, Hemilepidotus jordani (Bean) and Hemilepidotus hemilepidotus (Tilesius)
C.E.C. Goertz, Daniel M. Mulcahy
2011, Journal of Fish Diseases (34) 75-79
Egg stasis ('egg-binding', 'post-ovulatory stasis') is a poorly characterized syndrome characterized by an inability of female fish to complete ovulation and to naturally expel mature eggs. Although it occurs in a variety of fish species, no definitive studies of the causation, prevalence, prevention and treatment have been done. The cause...
Long-term increases in young-of-the-year growth of Arctic cisco Coregonus autumnalis and environmental influences
Vanessa R. von Biela, Christian E. Zimmerman, L. L. Moulton
2011, Journal of Fish Biology (78) 39-56
Arctic cisco Coregonus autumnalis young-of-year (YOY) growth was used as a proxy to examine the long-term response of a high-latitude fish population to changing climate from 1978 to 2004. YOY growth increased over time (r2 = 0·29) and was correlated with monthly averages of the Arctic oscillation index, air temperature,...
Secular trends in the geologic record and the supercontinent cycle
Dwight Bradley
2011, Earth-Science Reviews (108) 16-33
Geologic secular trends are used to refine the timetable of supercontinent assembly, tenure, and breakup. The analysis rests on what is meant by the term supercontinent, which here is defined broadly as a grouping of formerly dispersed continents. To avoid the artificial pitfall of an all-or-nothing definition, quantitative measures of...
Reduction of garbage in the diet of nonbreeding glaucous gulls corresponding to a change in waste management
Emily L. Weiser, Abby N. Powell
2011, Arctic (64) 220-226
Glaucous gulls (Larus hyperboreus) are major predators in the Arctic and may benefit from human development. We studied use of garbage by glaucous gulls in Barrow, Alaska, in 2007, when municipal waste was disposed of in a landfill, and in 2008, when it was incinerated. In both years, diet samples...
Sea otter abundance in Kenai Fjords national Park: Results from the 2010 aerial survey
Heather A. Coletti, James L. Bodkin, George G. Esslinger
2011, Report
A sea otter aerial survey was completed in Kenai Fjords National Park (KEFJ) during June of 2010. This was the third aerial survey completed since 2002 along the Kenai Peninsula, the second specifically conducted within KEFJ. Survey methodology followed the Bodkin and Udevitz (1999) method which accounts for imperfect detection....
Status and distribution of the Kittlitz's Murrelet Brachyramphus brevirostris along the Alaska Peninsula and Kodiak and Aleutian Islands, Alaska
Erica N. Madison, John F. Piatt, Mayumi L. Arimitsu, Marc D. Romano, Thomas I. van Pelt, S. Kim Nelson, Jeffrey C. Williams, Anthony R. DeGange
2011, Marine Ornithology: Journal of Seabird Research and Conservation (39) 111-122
The Kittlitz's Murrelet Brachyramphus brevirostris is adapted for life in glacial-marine ecosystems, being concentrated in the belt of glaciated fjords in the northern Gulf of Alaska from Glacier Bay to Cook Inlet. Most of the remaining birds are scattered along coasts of the Alaska Peninsula and Aleutian Islands, where they...
Northwestern forested mountains: Chapter 8
W.D. Bowman, Jill Baron, L.H. Geiser, M.E. Fenn, E.A. Lilleskov
2011, General Technical Report NRS-80
Th e Northwestern Forested Mountains are ecologically diverse and geographically widespread, encompassing the mountain ecosystems of central and northwestern North America (CEC 1997; Figure 2.2). Th e ecoregion description is adapted from CEC (1997). Geographically, they extend from the Rocky Mountains and the Sierra Nevada north through the Siskiyous, the...
GAGES-II: Geospatial Attributes of Gages for Evaluating Streamflow
James A. Falcone
2011, Report
This dataset, termed "GAGES II", an acronym for Geospatial Attributes of Gages for Evaluating Streamflow, version II, provides geospatial data and classifications for 9,322 stream gages maintained by the U.S. Geological Survey (USGS). It is an update to the original GAGES, which was published as a Data Paper on the...
Nest-site fidelity and dispersal of Gyrfalcons estimated by noninvasive genetic sampling
Travis L. Booms, Sandra L. Talbot, George K. Sage, Brian J. McCaffery, Kevin G. McCracken, Philip F. Schempf
2011, Conference Paper, Condor
We used feathers from adult Gyrfalcons (Falco rusticolus) molted in breeding territories and blood samples from nestlings to document nest-site fidelity and dispersal of breeding adults and juveniles at three areas 100- 350 km apart in Yukon Delta National Wildlife Refuge, Alaska, 2003-2007. We used genotypes from seven polymorphic microsatellite...
Coelomic implantation of satellite transmitters in the bar-tailed godwit (Limosa lapponica) and the bristle-thighed curlew (Numenius tahitiensis) using propofol, bupivacaine, and lidocaine
Daniel M. Mulcahy, Brett D. Gartrell, Robert E. Gill Jr., T. Lee Tibbitts, Daniel R. Ruthrauff
2011, Journal of Zoo and Wildlife Medicine (42) 54-64
Intravenous propofol was used as a general anesthetic with a 2∶1 (mg∶mg) adjunctive mixture of lidocaine and bupivacaine as local anesthetics infiltrated into the surgical sites for implantation of satellite transmitters into the right abdominal air sac of 39 female and 4 male bar-tailed godwits (Limosa lapponica baueri and Limosa...
Thermal erosion of a permafrost coastline: Improving process-based models using time-lapse photography
C. Wobus, R. Anderson, I. Overeem, N. Matell, G. Clow, F. Urban
2011, Arctic, Antarctic, and Alpine Research (43) 474-484
Coastal erosion rates locally exceeding 30 m y-1 have been documented along Alaska's Beaufort Sea coastline, and a number of studies suggest that these erosion rates have accelerated as a result of climate change. However, a lack of direct observational evidence has limited our progress in quantifying the specific processes...
Cytochrome P4501A biomarker indication of the timeline of chronic exposure of Barrow’s goldeneyes to residual Exxon Valdez oil
Daniel Esler, Brenda E. Ballachey, Kimberly A. Trust, Samuel A. Iverson, John A. Reed, A. Keith Miles, John D. Henderson, Bruce R. Woodin, John J. Stegeman, Malcolm McAdie, Daniel M. Mulcahy, Barry W. Wilson
2011, Marine Pollution Bulletin (62) 609-614
We examined hepatic EROD activity, as an indicator of CYP1A induction, in Barrow’s goldeneyes captured in areas oiled during the 1989 Exxon Valdez spill and those from nearby unoiled areas. We found that average EROD activity differed between areas during 2005, although the magnitude of the difference was reduced relative to a...
Spatial variability of biotic and abiotic tree establishment constraints across a treeline ecotone in the Alaska Range
K.M. Stueve, R.E. Isaacs, L.E. Tyrrell, R.V. Densmore
2011, Ecology (92) 496-506
Throughout interior Alaska (USA), a gradual warming trend in mean monthly temperatures occurred over the last few decades (∼∼2-–4°°C). The accompanying increases in woody vegetation at many alpine treeline (hereafter treeline) locations provided an opportunity to examine how biotic and abiotic local site conditions interact to control tree establishment patterns...
High-resolution well-log derived dielectric properties of gas-hydrate-bearing sediments, Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope
Y. Sun, D. Goldberg, Timothy S. Collett, R. Hunter
2011, Marine and Petroleum Geology (28) 450-459
A dielectric logging tool, electromagnetic propagation tool (EPT), was deployed in 2007 in the BPXA-DOE-USGS Mount Elbert Gas Hydrate Stratigraphic Test Well (Mount Elbert Well), North Slope, Alaska. The measured dielectric properties in the Mount Elbert well, combined with density log measurements, result in a vertical high-resolution (cm-scale) estimate...
Regional long-term production modeling from a single well test, Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope
B.J. Anderson, M. Kurihara, M.D. White, G. J. Moridis, S.J. Wilson, M. Pooladi-Darvish, M. Gaddipati, Y. Masuda, Timothy S. Collett, R.B. Hunter, H. Narita, K. Rose, R. Boswell
2011, Marine and Petroleum Geology (28) 493-501
Following the results from the open-hole formation pressure response test in the BPXA-DOE-USGS Mount Elbert Gas Hydrate Stratigraphic Test Well (Mount Elbert well) using Schlumberger's Modular Dynamics Formation Tester (MDT) wireline tool, the International Methane Hydrate Reservoir Simulator Code Comparison project performed long-term reservoir simulations on three different model reservoirs....
Pore fluid geochemistry from the Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope
M.E. Torres, Timothy S. Collett, K.K. Rose, J.C. Sample, Warren F. Agena, E.J. Rosenbaum
2011, Marine and Petroleum Geology (28) 332-342
The BPXA-DOE-USGS Mount Elbert Gas Hydrate Stratigraphic Test Well was drilled and cored from 606.5 to 760.1 m on the North Slope of Alaska, to evaluate the occurrence, distribution and formation of gas hydrate in sediments below the base of the ice-bearing permafrost. Both the dissolved chloride and the isotopic composition...
Combined effects of tectonic and landslide-generated Tsunami Runup at Seward, Alaska during the Mw 9.2 1964 earthquake
E. Suleimani, D.J. Nicolsky, Peter J. Haeussler, R. Hansen
2011, Pure and Applied Geophysics (168) 1053-1074
We apply a recently developed and validated numerical model of tsunami propagation and runup to study the inundation of Resurrection Bay and the town of Seward by the 1964 Alaska tsunami. Seward was hit by both tectonic and landslide-generated tsunami waves during the MW"><span...
Oil and gas resource potential north of the Arctic Circle
Donald L. Gautier, Kenneth J. Bird, Ronald Charpentier, Arthur Grantz, David W. Houseknecht, Timothy R. Klett, Thomas E. Moore, Janet K. Pitman, Christopher J. Schenk, J.H. Schuenemeyer, K. Sorensen, Marilyn E. Tennyson, Zenon C. Valin, Craig J. Wandrey
2011, Geological Society Memoir (35) 151-161
The US Geological Survey recently assessed the potential for undiscovered conventional petroleum in the Arctic. Using a new map compilation of sedimentary elements, the area north of the Arctic Circle was subdivided into 70 assessment units, 48 of which were quantitatively assessed. The Circum-Arctic Resource Appraisal (CARA) was a geologically...
Modern thermokarst lake dynamics in the continuous permafrost zone, northern Seward Peninsula, Alaska
Benjamin M. Jones, G. Grosse, C.D. Arp, M.C. Jones, Anthony K.M. Walter, V.E. Romanovsky
2011, Journal of Geophysical Research: Biogeosciences (116)
Quantifying changes in thermokarst lake extent is of importance for understanding the permafrost-related carbon budget, including the potential release of carbon via lake expansion or sequestration as peat in drained lake basins. We used high spatial resolution remotely sensed imagery from 1950/51, 1978, and 2006/07 to quantify changes in thermokarst...
An overview of the petroleum geology of the Arctic
A.M. Spencer, A.F. Embry, Donald L. Gautier, A.V. Stoupakova, K. Sorensen
2011, Geological Society Memoir 1-15
Nine main petroleum provinces containing recoverable resources totalling 61 Bbbl liquids+269 Bbbloe of gas are known in the Arctic. The three best known major provinces are: West Siberia–South Kara, Arctic Alaska and Timan–Pechora. They have been sourced principally from, respectively, Upper Jurassic, Triassic and Devonian marine source rocks and their...
