Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2003
James P. Dixon, Scott D. Stihler, John A. Power, Guy Tytgat, Seth C. Moran, John J. Sanchez, Stephen R. McNutt, Steve Estes, John Paskievitch
2004, Open-File Report 2004-1234
The Alaska Volcano Observatory (AVO), a cooperative program of the U.S. Geological Survey, the Geophysical Institute of the University of Alaska Fairbanks, and the Alaska Division of Geological and Geophysical Surveys, has maintained seismic monitoring networks at historically active volcanoes in Alaska since 1988. The primary objectives of this program...
Summary and Comparison of Multiphase Streambed Scour Analysis at Selected Bridge Sites in Alaska
Jeffrey S. Conaway
2004, Scientific Investigations Report 2004-5066
The U.S. Geological Survey and the Alaska Department of Transportation and Public Facilities undertook a cooperative multiphase study of streambed scour at selected bridges in Alaska beginning in 1994. Of the 325 bridges analyzed for susceptibility to scour in the preliminary phase, 54 bridges were selected for a more intensive...
Water Quality and Streamflow of the Indian River, Sitka, Alaska, 2001-02
Edward J. Neal, Timothy P. Brabets, Steven A. Frenzel
2004, Scientific Investigations Report 2004-5023
The Indian River Basin, located near Sitka Alaska, drains an area of 12.3 square miles. This watershed is an important natural resource of Sitka National Historic Park. At the present time, the watershed faces possible development on large tracts of private land upstream of the park that could affect the...
The Alaska Volcano Observatory - Expanded monitoring of volcanoes yields results
Steven R. Brantley, Robert G. McGimsey, Christina A. Neal
2004, Fact Sheet 2004-3084
Recent explosive eruptions at some of Alaska's 52 historically active volcanoes have significantly affected air traffic over the North Pacific, as well as Alaska's oil, power, and fishing industries and local communities. Since its founding in the late 1980s, the Alaska Volcano Observatory (AVO) has installed new monitoring networks and...
Alaska resource data file: Mount Hayes quadrangle, Alaska
William Ellis, Charles C. Hawley, Samuel Dashevsky
2004, Open-File Report 2004-1266
No abstract available....
Size-frequency analysis of petroleum accumulations in selected United States plays: potential analogues for frontier areas
Emil D. Attanasi, Philip A. Freeman
2004, Open-File Report 2004-1299
This report presents the petroleum accumulation size-frequency relationships of selected mature plays assessed in the U.S. Geological Survey's 1995 National Assessment of Oil and Gas Resources. The plays provide assessors with potential analogue models from which to estimate the numbers of undiscovered accumulations in medium and smaller size categories. Each...
Alaska coal geology, resources, and coalbed methane potential
Romeo M. Flores, Gary D. Stricker, Scott A. Kinney
2004, Data Series 77
Estimated Alaska coal resources are largely in Cretaceous and Tertiary rocks distributed in three major provinces. Northern Alaska-Slope, Central Alaska-Nenana, and Southern Alaska-Cook Inlet. Cretaceous resources, predominantly bituminous coal and lignite, are in the Northern Alaska-Slope coal province. Most of the Tertiary resources, mainly lignite to subbituminous coal with minor...
Alaska resource data file: Mount McKinley quadrangle
Charles G. Hawley
2004, Open-File Report 2004-1200
No abstract available....
Magnetic Properties of Quaternary Deposits, Kenai Peninsula, Alaska -- Implications for Aeromagnetic Anomalies of Upper Cook Inlet
R. W. Saltus, Peter J. Haeussler
2004, Open-File Report 2004-1202
We measured magnetic susceptibilities of exposed Quaternary deposits on several beach cliffs and river banks on the Kenai Peninsula near Soldotna, Alaska. Data, descriptions, and photos from nine sites are included in this report. The mean susceptibility for Quaternary materials in this region is approximately 2.5 x 10-3 SI units....
Geology of the Ugashik-Mount Peulik Volcanic Center, Alaska
Thomas P. Miller
2004, Open-File Report 2004-1009
The Ugashik-Mount Peulik volcanic center, 550 km southwest of Anchorage on the Alaska Peninsula, consists of the late Quaternary 5-km-wide Ugashik caldera and the stratovolcano Mount Peulik built on the north flank of Ugashik. The center has been the site of explosive volcanism including a caldera-forming eruption and post-caldera dome-destructive...
Geologic and Fossil Locality Maps of the West-Central Part of the Howard Pass Quadrangle and Part of the Adjacent Misheguk Mountain Quadrangle, Western Brooks Range, Alaska
James H. Dover, Irvin L. Tailleur, Julie A. Dumoulin
2004, Miscellaneous Field Studies Map 2413
The map depicts the field distribution and contact relations between stratigraphic units, the tectonic relations between major stratigraphic sequences, and the detailed internal structure of these sequences. The stratigraphic sequences formed in a variety of continental margin depositional environments, and subsequently underwent a...
Development of a 2001 National Land Cover Database for the United States
Collin G. Homer, Chengquan Huang, Limin Yang, Bruce K. Wylie, Michael Coan
2004, Photogrammetric Engineering and Remote Sensing (70) 829-840
Multi-Resolution Land Characterization 2001 (MRLC 2001) is a second-generation Federal consortium designed to create an updated pool of nation-wide Landsat 5 and 7 imagery and derive a second-generation National Land Cover Database (NLCD 2001). The objectives of this multi-layer, multi-source database are two fold: first, to provide consistent land cover...
Geophysical investigation of the Denali fault and Alaska Range orogen within the aftershock zone of the October–November 2002, M = 7.9 Denali fault earthquake
Michael A. Fisher, Warren J. Nokleberg, N. A. Ratchkovski, Louise Pellerin, Jonathan M.G. Glen, Thomas M. Brocher, J. Booker
2004, Geology (32) 269-272
The aftershock zone of the 3 November 2002, M = 7.9 earthquake that ruptured along the right-slip Denali fault in south-central Alaska has been investigated by using gravity and magnetic, magnetotelluric, and deep-crustal, seismic reflection data as well as outcrop geology and earthquake seismology. Strong seismic reflections from within the...
Geophysical data reveal the crustal structure of the Alaska range orogen within the aftershock zone of the Mw 7.9 Denali fault earthquake
M. A. Fisher, N. Ratchkovski, Warren Nokleberg, Louise Pellerin, Jonathan M.G. Glen
2004, Bulletin of the Seismological Society of America (94) S107-S131
Geophysical information, including deep-crustal seismic reflection, magnetotelluric (mt), gravity, and magnetic data, cross the aftershock zone of the 3 November 2002 Mw 7.9 Denali fault earthquake. These data and aftershock seismicity, jointly interpreted, reveal the crustal structure of the right-lateral-slip Denali fault and the eastern Alaska Range orogen, as well as...
Alaska resource data file: Iliamna quadrangle
C. C. Hawley
2004, Open-File Report 2004-1057
No abstract available....
Representative Bulk Composition of Oil Types for the 2002 U.S. Geological Survey Resource Assessment of National Petroleum Reserve in Alaska
Paul G. Lillis
2004, Open-File Report 2003-407
Bulk oil composition is an important economic consideration of a petroleum resource assessment. Geological and geochemical interpretations from previous North Slope studies combined with recently acquired geochemical data are used to predict representative oil gravity (?API) and sulfur content (wt.% S) of the oil types for the 2002 U.S. Geological...
Stratiform barite deposits in the Roberts Mountains allochthon, Nevada: A review of potential analogs in modern sea-floor environments
Randolph A. Koski, James R. Hein
2004, Bulletin 2209-H
The United States is a net importer of barite, a critical mineral for the oil and gas industry; more than 80 percent of current domestic consumption of barite is imported from China. Nearly all of the domestic production of barite comes from stratiform deposits in Nevada. The 'modern analogs' approach...
Alaska resource data file: Dixon Entrance quadrangle
Donald J. Grybeck
2004, Open-File Report 2004-1055
No abstract available....
Water quality in the Cook Inlet Basin Alaska, 1998-2001
Roy L. Glass, Timothy P. Brabets, Steven A. Frenzel, Matthew S. Whitman, Robert T. Ourso
2004, Circular 1240
This report contains the major findings of a 1998?2001 assessment of water quality in the Cook Inlet Basin. It is one of a series of reports by the National Water-Quality Assessment (NAWQA) Program that present major findings in 51 major river basins and aquifer systems across the Nation. In these...
Alaska resource data file: Eagle quadrangle
Melanie B. Werdon, Roy L. Flynn, D.J. Szumigala
2004, Open-File Report 2004-1056
No abstract available....
Assessment of Fish Habitat, Water Quality, and Selected Contaminants in Streambed Sediments in Noyes Slough, Fairbanks, Alaska, 2001-2002
Ben W. Kennedy, Matthew S. Whitman, Robert L. Burrows, Sharon A. Richmond
2004, Water-Resources Investigations Report 2003-4328
During 2001-2002, the U.S. Geological Survey sampled streambed sediment at 23 sites, measured water quality at 26 sites, and assessed fish habitat for the entire length of Noyes Slough, a 5.5-mile slough of the Chena River in Fairbanks, Alaska. These studies were undertaken to document the environmental condition of the...
The National Assessment of Shoreline Change: A GIS Compilation of Vector Shorelines and Associated Shoreline Change Data for the U.S. Gulf of Mexico
Tara L. Miller, Robert A. Morton, Asbury H. Sallenger Jr., Laura J. Moore
2004, Open-File Report 2004-1089
Introduction The Coastal and Marine Geology Program of the U.S. Geological Survey has generated a comprehensive database of digital vector shorelines and shoreline change rates for the U.S. Gulf of Mexico. These data, which are presented herein, were compiled as part of the U.S. Geological Survey's National Assessment of Shoreline Change...
National Assessment of Shoreline Change: Part 1, Historical Shoreline Changes and Associated Coastal Land Loss Along the U.S. Gulf of Mexico
Robert A. Morton, Tara L. Miller, Laura J. Moore
2004, Open-File Report 2004-1043
EXECUTIVE SUMMARY Beach erosion is a chronic problem along most open-ocean shores of the United States. As coastal populations continue to grow and community infrastructures are threatened by erosion, there is increased demand for accurate information regarding past and present trends and rates of shoreline movement. There is also a need...
Complex trophic interactions in kelp forest ecosystems
J. A. Estes, E.M. Danner, D.F. Doak, B. Konar, A.M. Springer, P.D. Steinberg, M. Tim Tinker, T. M. Williams
2004, Bulletin of Marine Science (74) 621-638
The distributions and abundances of species and populations change almost continuously. Understanding the processes responsible is perhaps ecology’s most fundamental challenge. Kelp-forest ecosystems in southwest Alaska have undergone several phase shifts between alga- and herbivore-dominated states in recent decades. Overhunting and recovery of sea otters caused the earlier shifts. Studies...
1998 volcanic activity in Alaska and Kamchatka: Summary of events and response of the Alaska Volcano Observatory
Robert G. McGimsey, Christina A. Neal, Olga Girina
2004, Open-File Report 2003-423
No abstract available....
