Publications
USGS research activities relevant to Alaska have yielded more than 9400 historical publications. This page features some of the most recent newsworthy research findings.
Filter Total Items: 3105
Prey consumption and energy transfer by marine birds in the Gulf of Alaska Prey consumption and energy transfer by marine birds in the Gulf of Alaska
We investigated prey consumption by marine birds and their contribution to cross-shelf fluxes in the northern Gulf of Alaska. We utilized data from the North Pacific Pelagic Seabird Database for modeling energy demand and prey consumption. We found that prey consumption by marine birds was much greater over the continental shelf than it was over the basin. Over the shelf, subsurface...
Authors
G.L. Hunt, G.S. Drew, J. Jahncke, John F. Piatt
A signal for independent coastal and continental histories among North American wolves A signal for independent coastal and continental histories among North American wolves
Relatively little genetic variation has been uncovered in surveys across North American wolf populations. Pacific Northwest coastal wolves, in particular, have never been analysed. With an emphasis on coastal Alaska wolf populations, variation at 11 microsatellite loci was assessed. Coastal wolf populations were distinctive from continental wolves and high levels of diversity were found...
Authors
Byron V. Weckworth, Sandra L. Talbot, George K. Sage, David K. Person, Joseph Cook
Testing archival tag technology in coho salmon Testing archival tag technology in coho salmon
Archive tags with temperature and light-geolocation sensors will be monitored for post-smolt coho salmon in Cook Inlet. Light/location relationships specific to the Gulf of Alaska developed under Project 00478 will be applied in this study of movement and migration paths for coho salmon during maturation in ocean environments in Cook Inlet. Salmon for this study will be reared in...
Authors
Jennifer L. Nielsen, Philip Richards, Thor Tingey, Derek Wilson, Christian E. Zimmerman
Using Forward Looking Infrared (FLIR) imagery to detect polar bear maternal dens: Operations manual Using Forward Looking Infrared (FLIR) imagery to detect polar bear maternal dens: Operations manual
Recent research has shown that Forward Looking Infia-Red (FLIR) imagery can detect polar bear dens despite total snow cover over their deming habitat. FLIR imagers detect a AT or difference in temperature between objects in the imager's field of view. During the Arctic winter, the groundlsnow surface is typically cold, providing a dark background in the FLIR imager. Sources of heat...
Authors
Geoffrey S. York, Steven C. Amstrup, Kristin S. Simac
Seafloor habitat mapping and classification in Glacier Bay, Alaska: Phase 1 & 2 1996-2004 Seafloor habitat mapping and classification in Glacier Bay, Alaska: Phase 1 & 2 1996-2004
Glacier Bay is a diverse fjord ecosystem with multiple sills, numerous tidewater glaciers and a highly complex oceanographic system. The Bay was completely glaciated prior to the 1700’s and subsequently experienced the fastest glacial retreat recorded in historical times. Currently, some of the highest sedimentation rates ever observed occur in the Bay, along with rapid uplift (up to 2.5...
Authors
Philip N. Hooge, Paul R. Carlson, Jennifer Mondragon, Lisa L. Etherington, G.R. Cochran
Alaska resource data file: Iditarod quadrangle Alaska resource data file: Iditarod quadrangle
No abstract available.
Authors
Thomas K. Bundtzen, Marti L. Miller, Charles C. Hawley
Alaska resource data file: Sleetmute quadrangle, Alaska Alaska resource data file: Sleetmute quadrangle, Alaska
No abstract available.
Authors
Thomas K. Bundtzen, Marti L. Miller
Alaska resource data file: Mount Hayes quadrangle, Alaska Alaska resource data file: Mount Hayes quadrangle, Alaska
No abstract available.
Authors
William Ellis, Charles C. Hawley, Samuel Dashevsky
Alaska resource data file: Mount McKinley quadrangle Alaska resource data file: Mount McKinley quadrangle
No abstract available.
Authors
Charles G. Hawley
Alaska resource data file: Eagle quadrangle Alaska resource data file: Eagle quadrangle
No abstract available.
Authors
Melanie B. Werdon, Roy L. Flynn, D.J. Szumigala
Alaska resource data file: Dixon Entrance quadrangle Alaska resource data file: Dixon Entrance quadrangle
No abstract available.
Authors
Donald J. Grybeck
Alaska resource data file: Iliamna quadrangle Alaska resource data file: Iliamna quadrangle
No abstract available.
Authors
C. C. Hawley