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: 3090
A strategy for monitoring glaciers A strategy for monitoring glaciers
Glaciers are important features in the hydrologic cycle and affect the volume, variability, and water quality of runoff. Assessing and predicting the effect of glaciers on water resources require a monitoring program to provide basic data for this understanding. The monitoring program of the U.S. Geological Survey employs a nested approach whereby an intensively studied glacier is...
Authors
Andrew G. Fountain, Robert M. Krimmel, Dennis C. Trabant
Alaska resource data file: Nabesna quadrangle Alaska resource data file: Nabesna quadrangle
No abstract available.
Authors
D.H. Richter
Distribution and stability of eelgrass beds at Izembek Lagoon, Alaska Distribution and stability of eelgrass beds at Izembek Lagoon, Alaska
Spatial change in eelgrass meadows, Zostera marina L., was assessed between 1978 and 1987 and between 1987 and 1995 at Izembek Lagoon, Alaska. Change in total extent was evaluated through a map to map comparison of data interpreted from a 1978 Landsat multi-spectral scanner image and 1987 black and white aerial photographs. A ground survey in 1995 was used to assess spatial change from...
Authors
David H. Ward, Carl J. Markon, David C. Douglas
Relative effects of survival and reproduction on the population dynamics of emperor geese Relative effects of survival and reproduction on the population dynamics of emperor geese
Populations of emperor geese (Chen canagica) in Alaska declined sometime between the mid-1960s and the mid-1980s and have increased little since. To promote recovery of this species to former levels, managers need to know how much their perturbations of survival and/or reproduction would affect population growth rate (λ). We constructed an individual-based population model to evaluate...
Authors
Joel A. Schmutz, Robert F. Rockwell, Margaret R. Petersen
The effects of Vexar® seedling protectors on the growth and development of lodgepole pine roots The effects of Vexar® seedling protectors on the growth and development of lodgepole pine roots
The effects on the growth and development of lodgepole pine roots from the Vexar® tubes used to protect seedlings from pocket gopher damage were studied in the Targhee National Forest, Idaho and the Deschutes National Forest, Oregon. At each site, Vexar-protected and unprotected seedlings, with and without above-ground gopher damage were examined after six growing seasons for root...
Authors
Richard M. Engeman, R. Michael Anthony, Heather W. Krupa, James Evans
Echelon approach to areas of concern in synoptic regional monitoring Echelon approach to areas of concern in synoptic regional monitoring
Echelons provide an objective approach to prospecting for areas of potential concern in synoptic regional monitoring of a surface variable. Echelons can be regarded informally as stacked hill forms. The strategy is to identify regions of the surface which are elevated relative to surroundings ( Relative ELEVATIONS or RELEVATIONS). These are areas which would continue to expand as islands...
Authors
Wayne Myers, Ganapati P. Patil, Kyle Joly
Seabird, marine mammal, and oceanography coordinated investigations (SMMOCI) near Unimak Pass, Alaska Seabird, marine mammal, and oceanography coordinated investigations (SMMOCI) near Unimak Pass, Alaska
No abstract available.
Authors
G. Vernon Byrd, Richard L. Merrick, John F. Piatt, Brenda L. Norcross
Revised geologic map of the Cold Bay and False Pass quadrangles, Alaska Peninsula Revised geologic map of the Cold Bay and False Pass quadrangles, Alaska Peninsula
No abstract available.
Authors
Frederic H. Wilson, Florence R. Weber, Tina M. Dochat, Thomas P. Miller, Robert L. Detterman
Proximate composition and energy density of some North Pacific forage fishes Proximate composition and energy density of some North Pacific forage fishes
Mature pelagic forage fish species (capelin, sand lance, squid) had greater lipid concentrations than juvenile age-classes of large demersal and pelagic fish species (walleye pollock, Pacific cod, Atka mackerel, greenling, prowfish, rockfish, sablefish). Myctophids preyed on by puffins have at least twice as much lipid per gram compared to mature capelin, sand lance and squid, and an...
Authors
Thomas I. van Pelt, John F. Piatt, Brian K. Lance, Daniel D. Roby
Water Resources Data for Alaska, Water Year 1996 Water Resources Data for Alaska, Water Year 1996
Water resources data for the 1996 water year for Alaska consist of records of stage, discharge, and water quality of streams; stages of lakes; and water levels and water quality of ground water. This volume contains records for water discharge at 85 gaging stations; stage or contents only at 5 gaging stations; water quality at 19 gaging stations; and water levels for 49 observation wells...
Authors
K.R. Linn, S.K. Shaw, W.C. Swanner, R. L. Rickman, M.F. Schellekens
Field guide to the Mesozoic accretionary complex along Turnagain Arm and Kachemak Bay, south-central Alaska Field guide to the Mesozoic accretionary complex along Turnagain Arm and Kachemak Bay, south-central Alaska
Turnagain Arm, just east of Anchorage, provides a readily accessible, world-class cross section through a Mesozoic accretionary wedge. Nearly continuous exposures along the Seward Highway, the Alaska Railroad, and the shoreline of Turnagain Arm display the two main constituent units of the Chugach terrane: the McHugh Complex and Valdez Group. In this paper we describe seven bedrock...
Authors
Dwight Bradley, Timothy M. Kusky, Susan M. Karl, Peter J. Haeussler
Alaska resource data file: Arctic quadrangle Alaska resource data file: Arctic quadrangle
No abstract available.
Authors
J. H. Dover