Elements in Mud and Snow in the Vicinity of the DeLong Mountain Regional Transportation System Road, Red Dog Mine, and Cape Krusenstern National Monument, Alaska, 2005-06
William J. Brumbaugh, Thomas W. May
2008, Scientific Investigations Report 2008-5040
A small number of mud, road bed soil, and snow samples were collected in 2005 and 2006 to assess metal concentrations and loadings to areas adjacent to the DeLong Mountain Regional Transportation System (DMTS) road in northwest Alaska. The DMTS road is used by large trucks to transport lead and...
The Face of Alaska: A Look at Land Cover and the Potential Drivers of Change
Benjamin M. Jones
2008, Open-File Report 2008-1161
The purpose of this report is to provide statewide baseline information on the status and potential drivers of land-cover change in Alaska. The information gathered for this report is based on a review and analysis of published literature and consists of prominent factors contributing to the current state of the...
A major unconformity between Permian and Triassic strata at Cape Kekurnoi, Alaska Peninsula: Old and new observations on stratigraphy and hydrocarbon potential
Robert B. Blodgett, Bryan Sralla
2008, Professional Paper 1739-E
A major angular unconformity separates carbonates and shales of the Upper Triassic Kamishak Formation from an underlying unnamed sequence of Permian agglomerate, volcaniclastic rocks (sandstone), and limestone near Puale Bay on the Alaska Peninsula. For the first time, we photographically document the angular unconformity in outcrop, as clearly exposed in...
Preliminary integrated geologic map databases for the United States. Digital data for the geology of the southern Brooks Range, Alaska
2008, Open-File Report 2008-1149
The growth in the use of Geographic Information Systems (GIS) has highlighted the need for digital geologic maps that have been attributed with information about age and lithology. Such maps can be conveniently used to generate derivative maps for manifold special purposes such as mineral-resource assessment, metallogenic studies, tectonic studies,...
Pacific Walrus Response to Arctic Sea Ice Losses
Chadwick V. Jay, Anthony S. Fischbach
2008, Fact Sheet 2008-3041
Sea ice plays an important role in the life of the Pacific walrus (Odobenus rosmarus divergens). U.S. Geological Survey (USGS) scientists are seeking to understand how losses of sea ice during summer over important foraging grounds in the Chukchi Sea will affect walruses. USGS scientists recently modified a remotely deployed...
Active volcanoes of the Kurile Islands: A reference guide for aviation users
Christina A. Neal, Alexander Rybin, Marina Chibisova, Edward Miller
2008, Open-File Report 2008-1162
The many volcanoes of the remote and mostly uninhabited Kurile Island arc (fig. 1; table 1) pose a serious hazard for air traffic in the North Pacific. Ash clouds from Kurile eruptions can impact some of the busiest air travel routes in the world and drift quickly into airspace managed...
USGS Alaska State Mosaic
Water Resources Division, U.S. Geological Survey
2008, Fact Sheet 2008-3023
The Alaska State Mosaic consists of portions of scenes from the Multi-Resolution Land Characteristics 2001 (MRLC 2001) collection. The 172 selected scenes have been geometrically and radiometrically aligned to produce a seamless, relatively cloud-free image of the State. The scenes were acquired between July 1999 and September 2002, resampled to...
Substrate Geochemistry and Soil Development in Boreal Forest and Tundra Ecosystems in the Yukon-Tanana Upland and Seward Peninsula, Alaska
L. P. Gough, J.G. Crock, B. Wang, W. C. Day, D. D. Eberl, R. F. Sanzolone, P. J. Lamothe
2008, Scientific Investigations Report 2008-5010
We report on soil development as a function of bedrock type and the presence of loess in two high latitude ecosystems (boreal forest and tundra) and from two regions in Alaska?the Yukon-Tanana Upland (YTU, east-central Alaska) and the Seward Peninsula (SP, far-west coastal Alaska). This approach to the study of...
Publications of the Volcano Hazards Program 2006
Manuel Nathenson
2008, Open-File Report 2008-1006
The Volcano Hazards Program of the U.S. Geological Survey (USGS) is part of the Geologic Hazards Assessments subactivity as funded by Congressional appropriation. Investigations are carried out in the Geology and Hydrology Disciplines of the USGS and with cooperators at the Alaska Division of Geological and Geophysical Surveys, University of...
Geochemical data for samples collected in 2007 near the concealed pebble porphyry Cu-Au-Mo deposit, southwest Alaska
David L. Fey, Matthew Granitto, Stuart A. Giles, Steven M. Smith, Robert G. Eppinger, Karen D. Kelley
2008, Open-File Report 2008-1132
In the summer of 2007, the U.S. Geological Survey (USGS) began an exploration geochemical research study over the Pebble porphyry copper-gold-molydenum (Cu-Au-Mo) deposit in southwest Alaska. The Pebble deposit is extremely large and is almost entirely concealed by tundra, glacial deposits, and post-Cretaceous volcanic and volcaniclastic rocks. The deposit is...
Nutrient-reserve dynamics during egg production by female Greater Scaup (Aythya marila): Relationships with timing of reproduction
Kristen B. Gorman, Daniel Esler, Paul L. Flint, Tony D. Williams
2008, The Auk (125) 384-394
We studied nutrient-reserve dynamics of female Greater Scaup (Aythya marila) to quantify intraspecific strategies of nutrient acquisition for egg production, particularly in relation to the seasonal timing of reproduction (i.e., date of initiation of rapid follicle growth [RFG]). We collected female Greater Scaup on the Yukon-Kuskokwim Delta, Alaska, from arrival...
Lithofacies, Age, and Sequence Stratigraphy of the Carboniferous Lisburne Group in the Skimo Creek Area, Central Brooks Range
Julie A. Dumoulin, Michael T. Whalen, Anita G. Harris
2008, Professional Paper 1739-B
The Lisburne Group, a mainly Carboniferous carbonate succession that is widely distributed across northern Alaska, contains notable amounts of oil and gas at Prudhoe Bay. Detailed studies of the Lisburne in the Skimo Creek area, central Brooks Range, delineate its lithofacies, age, conodont biofacies, depositional environments, and sequence stratigraphy and...
Preliminary integrated geologic map databases for the United States: Digital data for the reconnaissance geologic map for the Kuskokwim Bay region of southwest Alaska
2008, Open-File Report 2008-1001
INTRODUCTION The growth in the use of Geographic Information Systems (GIS) has highlighted the need for digital geologic maps that have been attributed with information about age and lithology. Such maps can be conveniently used to generate derivative maps for manifold special purposes such as mineral-resource assessment, metallogenic studies, tectonic studies,...
Preliminary integrated geologic map databases for the United States: Digital data for the reconnaissance geologic map for Prince William Sound and the Kenai Peninsula, Alaska
2008, Open-File Report 2008-1002
The growth in the use of Geographic Information Systems (GIS) has highlighted the need for digital geologic maps that have been attributed with information about age and lithology. Such maps can be conveniently used to generate derivative maps for manifold special purposes such as mineral-resource assessment, metallogenic studies, tectonic studies,...
Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2006
James P. Dixon, Scott D. Stihler, John A. Power, Cheryl Searcy
2008, Data Series 326
Between January 1 and December 31, 2006, AVO located 8,666 earthquakes of which 7,783 occurred on or near the 33 volcanoes monitored within Alaska. Monitoring highlights in 2006 include: an eruption of Augustine Volcano, a volcanic-tectonic earthquake swarm at Mount Martin, elevated seismicity and volcanic unrest at Fourpeaked Mountain, and...
Variations in Community Exposure and Sensitivity to Tsunami Hazards on the Open-Ocean and Strait of Juan de Fuca Coasts of Washington
Nathan Wood, Christopher Soulard
2008, Scientific Investigations Report 2008-5004
Evidence of past events and modeling of potential future events suggest that tsunamis are significant threats to communities on the open-ocean and Strait of Juan de Fuca coasts of Washington. Although potential tsunami-inundation zones from a Cascadia Subduction Zone (CSZ) earthquake have been delineated, the amount and type of human...
2005 volcanic activity in Alaska, Kamchatka, and the Kurile Islands: Summary of events and response of the Alaska Volcano Observatory
R. G. McGimsey, C.A. Neal, J. P. Dixon, Sergey Ushakov
2008, Scientific Investigations Report 2007-5269
The Alaska Volcano Observatory (AVO) responded to eruptive activity or suspected volcanic activity at or near 16 volcanoes in Alaska during 2005, including the high profile precursory activity associated with the 2005–06 eruption of Augustine Volcano. AVO continues to participate in distributing information about eruptive activity on the Kamchatka Peninsula,...
Integrating modelling and remote sensing to identify ecosystem performance anomalies in the boreal forest, Yukon River Basin, Alaska
B.K. Wylie, L. Zhang, Norman B. Bliss, Lei Ji, Larry L. Tieszen, W. M. Jolly
2008, International Journal of Digital Earth (1) 196-220
High-latitude ecosystems are exposed to more pronounced warming effects than other parts of the globe. We develop a technique to monitor ecological changes in a way that distinguishes climate influences from disturbances. In this study, we account for climatic influences on Alaskan boreal forest performance with a data-driven model. We...
Neogene exhumation of the Tordrillo Mountains, Alaska, and correlations with Denali (Mount McKinley)
Peter J. Haeussler, Paul J O’Sullivan, Aaron L Berger, James A Spotila
Jeffery T. Freymueller, Peter J. Haeussler, Robert L. Wesson, Goran Ekstrom, editor(s)
2008, Book chapter, Active tectonics and seismic potential of Alaska, volume 179
No abstract available....
Ice, climate change and wildlife research in Alaska
Anthony R. DeGange
2008, Endangered Species Bulletin (33) 16-19
Not available...
Geological and geophysical evaluation of the mechanisms of the great 1899 Yakutat Bay earthquakes
George Plafker, Wayne R. Thatcher
Jeffery T. Freymueller, Peter J. Haeussler, Robert L. Wesson, Goran Ekstrom, editor(s)
2008, Book chapter, Active tectonics and seismic potential of Alaska
We have used tectonic, geologic, and seismologic observations to reevaluate the mechanisms and seismotectonic significance of the two great (Mw = 8.1 and 8.2) September 1899 Yakutat Bay earthquakes. In their comprehensive study of these earthquakes between 1905 and 1910, Tarr and Martin (1912) showed that these events were accompanied...
Paleoseismicity and neotectonics of the Aleutian subduction zone — An overview
Gary A. Carver, George Plafker
Jeffery T. Freymueller, Peter J. Haeussler, Robert L. Wesson, Goran Ekstrom, editor(s)
2008, Book chapter, Active tectonics and seismic potential of Alaska
The Aleutian subduction zone is one of the most seismically active plate boundaries and the source of several of the world’s largest historic earthquakes. The structural architecture of the subduction zone varies considerably along its length. At the eastern end is a tectonically complex collision zone where the allochthonous Yakutat...
Toward a time-dependent probabilistic seismic hazard analysis for Alaska
Oliver S. Boyd, Yuehua Zeng, Charles G. Bufe, Robert L. Wesson, Frederick Pollitz, Jeanne L. Hardebeck
Jeffery T. Freymueller, Peter J. Haeussler, Robert L. Wesson, Goran Ekstrom, editor(s)
2008, Book chapter, Active tectonics and seismic potential of Alaska
We report on a time-dependent seismic hazard analysis for Alaska and the Aleutians to complement our recently completed time-independent map. Whereas the time-independent map treats all sources as statistically independent, the time-dependent analysis is based on calculations of the conditional probability of occurrence for the next 50 years by using...
Seasonal and spatial variability in dissolved organic matter quantity and composition from the Yukon River basin, Alaska
R.G.M. Spencer, George Aiken, Kimberly P. Wickland, Rob Striegl, Peter J. Hernes
2008, Global Biogeochemical Cycles (22)
[1] The seasonal and spatial variability of dissolved organic matter (DOM) quantity and chemical composition were investigated in the Yukon River basin of Alaska, United States, and northwestern Canada. Dissolved organic carbon (DOC), chromophoric DOM (CDOM), and dissolved lignin phenols were measured across a range of source...
Does a boundary of the Wrangell Block extend through southern Cook Inlet and Shelikof Strait, Alaska?
Michael A. Fisher, Ray W. Sliter, Florence L. Wong
Jeffery T. Freymueller, Peter J. Haeussler, Robert L. Wesson, Goran Ekstrom, editor(s)
2008, Book chapter, Active tectonics and seismic potential of Alaska
In southcentral Alaska, the boundaries of two different tectonic blocks extend southwestward from the Denali Fault toward Cook Inlet and Shelikof Strait. We use offshore multichannel seismic reflection data and oil-well stratigraphy to evaluate whether local geologic structures are compatible with boundaries of either tectonic block and with the relative...
