Seismic precursors to volcanic explosions during the 2006 eruption of Augustine Volcano: Chapter 2 in The 2006 eruption of Augustine Volcano, Alaska
Helena Buurman, Michael E. West
John A. Power, Michelle L. Coombs, Jeffrey T. Freymueller, editor(s)
2010, Professional Paper 1769-2
The 2006 eruption of Augustine Volcano, Alaska, generated more than 3,500 earthquakes in a month-long time frame bracketing the most explosive period of activity. We examine two quantitative tools that, in retrospective analysis, were excellent indicators of imminent eruption. The first tool, referred to as the frequency index (FI), is...
A parametric study of the January 2006 explosive eruptions of Augustine Volcano, using seismic, infrasonic, and lightning data: Chapter 4 in The 2006 eruption of Augustine Volcano, Alaska
Stephen R. McNutt, Guy Tytgat, Steven A. Estes, Scott D. Stihler
John A. Power, Michelle L. Coombs, Jeffrey T. Freymueller, editor(s)
2010, Professional Paper 1769-4
A series of 13 explosive eruptions occurred at Augustine Volcano, Alaska, from January 11–28, 2006. Each lasted 2.5 to 19 minutes and produced ash columns 3.8 to 13.5 km above mean sea level. We investigated various parameters to determine systematic trends, including durations, seismic amplitudes, frequency contents, signal characteristics, peak...
The 2006 eruption of Augustine Volcano, Alaska
John A. Power, Michelle L. Coombs, Jeffrey T. Freymueller, editor(s)
2010, Professional Paper 1769
Augustine Volcano, the most historically active volcano in Alaska’s Cook Inlet region, again showed signs of life in April 2005. Escalating seismic unrest, ground deformation, and gas emissions culminated in an eruption from January 11 to mid-March of 2006, the fifth major eruption in 75 years. The eruption began with...
Using seismic b-values to interpret seismicity rates and physical processes during the preeruptive earthquake swarm at Augustine Volcano 2005-2006: Chapter 3 in The 2006 eruption of Augustine Volcano, Alaska
Katrina M. Jacobs, Stephen R. McNutt
John A. Power, Michelle L. Coombs, Jeffrey T. Freymueller, editor(s)
2010, Professional Paper 1769-3
We use seismic b-values to explore physical processes during the Augustine Volcano 2005–6 preeruptive earthquake swarm. The preeruptive earthquake swarm was divided into two parts: the “long swarm,” which extended from April 30, 2005, to January 10, 2006; and the "short swarm," which started 13 hours before the onset of...
Framework for ecological monitoring on lands of Alaska National Wildlife Refuges and their partners
Andrea Woodward, Erik A. Beever
2010, Open-File Report 2010-1300
National Wildlife Refuges in Alaska and throughout the U.S. have begun developing a spatially comprehensive monitoring program to inform management decisions, and to provide data to broader research projects. In an era of unprecedented rates of climate change, monitoring is essential to detecting, understanding, communicating and mitigating climate-change effects on...
Seasonal ice and hydrologic controls on dissolved organic carbon and nitrogen concentrations in a boreal-rich fen
Evan S. Kane, Merritt R. Turetsky, Jennifer W. Harden, A. David McGuire, James Michael Waddington
2010, Journal of Geophysical Research G: Biogeosciences (115)
[1] Boreal wetland carbon cycling is vulnerable to climate change in part because hydrology and the extent of frozen ground have strong influences on plant and microbial functions. We examined the response of dissolved organic carbon (DOC) and total dissolved nitrogen (TDN) across an experimental manipulation of water table position...
Magma flux at Okmok Volcano, Alaska, from a joint inversion of continuous GPS, campaign GPS, and interferometric synthetic aperture radar
Juliet Biggs, Zhong Lu, T. Fournier, Jeffrey T. Freymueller
2010, Journal of Geophysical Research B: Solid Earth (115)
Volcano deformation is usually measured using satellite geodetic techniques including interferometric synthetic aperture radar (InSAR), campaign GPS, and continuous GPS. Differences in the spatial and temporal sampling of each system mean that most appropriate inversion scheme to determine the source parameters from each data set is different. Most studies either...
The role of water in generating the calc-alkaline trend: New volatile data for aleutian magmas and a new tholeiitic index
Mindy M. Zimmer, Terry Plank, Erik H. Hauri, Gene Yogodzinski, Peter L. Stelling, Jessica Larsen, Brad Singer, Brian R. Jicha, Charlie Mandeville, Christopher J. Nye
2010, Journal of Petrology (51) 2411-2444
The origin of tholeiitic (TH) versus calc-alkaline (CA) magmatic trends has long been debated. Part of the problem stems from the lack of a quantitative measure for the way in which a magma evolves. Recognizing that the salient feature in many TH–CA discrimination diagrams is enrichment in Fe during magma...
ARCTOS: a relational database relating specimens, specimen-based science, and archival documentation
Gordon H. Jarrell, Cindy A. Ramotnik, D.L. McDonald
2010, Conference Paper, Geological Society of America Annual Meeting
Data are preserved when they are perpetually discoverable, but even in the Information Age, discovery of legacy data appropriate to particular investigations is uncertain. Secure Internet storage is necessary but insufficient. Data can be discovered only when they are adequately described, and visibility increases markedly if the data are related...
2010 updated assessment of undiscovered oil and gas resources of the National Petroleum Reserve in Alaska (NPRA)
D.W. Houseknecht, K. J. Bird, J.H. Schuenemeyer, E. D. Attanasi, C.P. Garrity, Christopher J. Schenk, Ronald R. Charpentier, R. M. Pollastro, T. A. Cook, T.R. and Klett
2010, Fact Sheet 2010-3102
Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean volumes of 896 million barrels of oil (MMBO) and about 53 trillion cubic feet (TCFG) of nonassociated natural gas in conventional, undiscovered accumulations within the National Petroleum Reserve in Alaska and adjacent State waters. The estimated volume of undiscovered...
Water quality in the Yukon River Basin, Alaska, water years 2006-2008
Paul F. Schuster, Karonhiakta'tie Bryan Maracle, Nicole Herman-Mercer
2010, Open-File Report 2010-1241
The Yukon River Inter-Tribal Watershed Council and the U.S. Geological Survey developed a water-quality monitoring program to address a shared interest in the water quality of the Yukon River and its relation to climate. This report contains water-quality data from samples collected in the Yukon River Basin during water years...
U.S. Geological Survey (USGS), Western Region: Coastal ecosystem responses to influences from land and sea, Coastal and Ocean Science
James L. Bodkin
2010, Fact Sheet 2010-3099
Sea otters and the nearshore ecosystems they inhabit-from highly urbanized California to relatively pristine Alaska-are the focus of a new multidisciplinary study by scientists with the U.S. Geological Survey (USGS) and a suite of international, academic and government collaborators. The Coastal Ecosystem Responses to Influences from Land and Sea project...
The potential influence of changing climate on the persistence of salmonids of the inland west
A.L. Haak, J.E. Williams, D. Isaak, A. Todd, C.C. Muhlfeld, J. L. Kershner, R. E. Gresswell, S. W. Hostetler, H.M. Neville
2010, Open-File Report 2010-1236
The Earth's climate warmed steadily during the 20th century, and mean annual air temperatures are estimated to have increased by 0.6°C (Intergovernmental Panel on Climate Change, 2007). Although many cycles of warming and cooling have occurred in the past, the most recent warming period is unique in its rate and...
Survival of captive and free-ranging Harlequin Ducks (Histrionicus histrionicus) following surgical liver biopsy
Daniel M. Mulcahy, Daniel Esler
2010, Journal of Wildlife Diseases (46) 1325-1329
We measured intra- and postoperative mortality rates of captive and free-ranging Harlequin Ducks (Histrionicus histrionicus) undergoing surgical liver biopsy sampling for determination of the induction of cytochrome P4501A, a biomarker of oil exposure. Liver biopsies were taken from and radio transmitters were implanted into 157 free-ranging Harlequin Ducks over three...
Persistent organic pollutants in the blood of free-ranging sea otters (Enhydra lutris ssp.) in Alaska and California
David A. Jessup, Christine K. Johnson, James A. Estes, Daphne Carlson-Bremer, Walter M. Jarman, Stacey Reese, Erin Dodd, M. Tim Tinker, Michael H. Ziccardi
2010, Journal of Wildlife Diseases (46) 1214-1233
As part of tagging and ecologic research efforts in 1997 and 1998, apparently healthy sea otters of four age-sex classes in six locations in Alaska and three in California were sampled for persistent organic pollutants (POPs) and other chemicals of ecologic or environmental concern (COECs). Published techniques for the detection...
Wayward youth: Trans-Beringian movement and differential southward migration by juvenile sharp-tailed sandpipers
Colleen M. Handel, Robert E. Gill Jr.
2010, Arctic (63) 273-288
The sharp-tailed sandpiper (Calidris acuminata) is a long-distance migrant that travels each year from breeding grounds in the Russian Arctic to nonbreeding areas in Australasia. Most adults migrate rapidly from breeding grounds along a largely inland route through Asia. Here we report on the highly unusual migratory strategy of this...
Marine benthic habitat mapping of Muir Inlet, Glacier Bay National Park and Preserve, Alaska, with an evaluation of the Coastal and Marine Ecological Classification Standard III
Luke D. Trusel, Guy R. Cochrane, Lisa L. Etherington, Ross D. Powell, Larry A. Mayer
2010, Scientific Investigations Map 3122
Seafloor geology and potential benthic habitats were mapped in Muir Inlet, Glacier Bay National Park and Preserve, Alaska, using multibeam sonar, ground-truth information, and geological interpretations. Muir Inlet is a recently deglaciated fjord that is under the influence of glacial and paraglacial marine processes. High glacially derived sediment and meltwater...
Preliminary bedrock geologic map of the Seward Peninsula, Alaska, and accompanying conodont data
Alison B. Till, Julie A. Dumoulin, Melanie B. Werdon, Heather A. Bleick
2010, Open-File Report 2009-1254
This 1:500,000-scale geologic map depicts the bedrock geology of Seward Peninsula, western Alaska, on the North American side of the Bering Strait. The map encompasses all of the Teller, Nome, Solomon, and Bendeleben 1:250,000-scale quadrangles, and parts of the Shishmaref, Kotzebue, Candle, and Norton Bay 1:250,000-scale quadrangles (sheet 1; sheet...
USGS exploration geochemistry studies at the Pebble porphyry Cu-Au-Mo deposit, Alaska— Pdf of presentation
Robert G. Eppinger, Karen D. Kelley, David L. Fey, Stuart A. Giles, Burke J. Minsley, Steven M. Smith
2010, Open-File Report 2010-1225
From 2007 through 2010, scientists in the U.S. Geological Survey (USGS) have been conducting exploration-oriented geochemical and geophysical studies in the region surrounding the giant Pebble porphyry Cu-Au-Mo deposit in southwestern Alaska. The Cretaceous Pebble deposit is concealed under tundra, glacial till, and Tertiary cover rocks, and is undisturbed except...
Stream-sediment samples reanalyzed for major, rare earth, and trace elements from seven 1:250,000-scale quadrangles, south-central Alaska, 2007-09
Bruce M. Gamble, Elizabeth A. Bailey, Nora B. Shew, Keith A. Labay, Jeanine M. Schmidt, Richard M. O’Leary, David E. Detra
2010, Data Series 532
During the 1960s through the 1980s, the U.S. Geological Survey conducted reconnaissance geochemical surveys of drainage basins throughout most of the Iliamna, Lake Clark, Lime Hills, and Talkeetna 1:250,000-scale quadrangles and parts of the McGrath, Seldovia, and Tyonek 1:250,000-scale quadrangles in Alaska. These geochemical surveys provide data necessary to assess...
MATLAB tools for improved characterization and quantification of volcanic incandescence in Webcam imagery: Applications at Kilauea Volcano, Hawai'i
Matthew R. Patrick, James P. Kauahikaua, Loren Antolik
2010, Techniques and Methods 13-A1
Webcams are now standard tools for volcano monitoring and are used at observatories in Alaska, the Cascades, Kamchatka, Hawai‘i, Italy, and Japan, among other locations. Webcam images allow invaluable documentation of activity and provide a powerful comparative tool for interpreting other monitoring datastreams, such as seismicity and deformation. Automated image...
Geologic cross section, gas desorption, and other data from four wells drilled for Alaska rural energy project, Wainwright, Alaska, coalbed methane project, 2007-2009
Arthur C. Clark, Stephen B. Roberts, Peter D. Warwick
2010, Open-File Report 2010-1210
Energy costs in rural Alaskan communities are substantial. Diesel fuel, which must be delivered by barge or plane, is used for local power generation in most off-grid communities. In addition to high costs incurred for the purchase and transport of the fuel, the transport, transfer, and storage of fuel products...
Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2009
James P. Dixon, Scott D. Stihler, John A. Power, Cheryl K. Searcy
2010, Data Series 531
Between January 1 and December 31, 2009, the Alaska Volcano Observatory (AVO) located 8,829 earthquakes, of which 7,438 occurred within 20 kilometers of the 33 volcanoes with seismograph subnetworks. Monitoring highlights in 2009 include the eruption of Redoubt Volcano, as well as unrest at Okmok Caldera, Shishaldin Volcano, and Mount...
U.S. Geological Survey activities related to American Indians and Alaska Natives: Fiscal years 2007 and 2008
Susan M. Marcus
2010, Circular 1345
In the late 1800s, John Wesley Powell, the second director of the U.S. Geological Survey (USGS), followed his interest in the tribes of the Great Basin and Colorado Plateau and studied their cultures, languages, and surroundings. From that early time, the USGS has recognized the importance of Native knowledge and...
Geology, geochemistry, and genesis of the Greens Creek massive sulfide deposit, Admiralty Island, southeastern Alaska
Cliff D. Taylor, Craig A. Johnson
2010, Professional Paper 1763
In 1996, a memorandum of understanding was signed by representatives of the U.S. Geological Survey and Kennecott Greens Creek Mining Company to initiate a cooperative applied research project focused on the Greens Creek massive sulfide deposit in southeastern Alaska. The goals of the project were consistent with the mandate of...
