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Alaska Science Center

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Highlighted Publications

Last Update: 2015-11-23
Depth, ice thickness, and ice-out timing cause divergent hydrologic responses among Arctic lakes [Details] [Full Publication]
Increased land use by Chukchi Sea polar bears in relation to changing sea ice conditions [Details] [Full Publication]
Seasonal flows of international British Columbia-Alaska rivers: the nonlinear influence of ocean-atmosphere circulation patterns [Details] [Full Publication]
Depositional conditions for the Kuna Formation, Red Dog Zn-Pb-Ag-Barite District, Alaska, inferred from isotopic and chemical proxies [Details] [Full Publication]

Highlighted Data

Last Update: 2015-10-28
Recreation Survey Results in Brown Bear Habitats, 2013
These data are the results of a modified Delphi survey in which expert opinion was solicited on the occurrence and frequency of recreational activities in brown bear habitats and their potential impacts. Twelve bear experts were surveyed and identified by either 1) their scientific publications on the impacts of one or more human recreational activity on bears, or 2) their experience in managing bear populations impacted by human recreational activities. Respondents were asked to estimate the frequency of each identified recreational activity for the bear populations they have experience with, estimate the proportion of each specific bear population exposed to each activity, and indicate the potential impacts of recreational activities in those bear populations. The frequency of occurrence of a recreational activity category and the proportion of the bear population exposed are reported from the final survey. We report the percentage of experts that noted potential for an impact on reduced survival, decreased nutritional intake, displacement, and reduced reproduction.

Chukchi Sea Polar Bear Location Data 1985-1996
These data are the raw location data collected from satellite radio-collars fitted on adult female polar bears in the Chukchi Sea, between 1985-1996. The collars were worn by adult female polar bears ranging within the Chukchi Sea subpopulation boundaries as identified by the International Union for the Conservation of Nature’s Polar Bear Specialist Group. ARGOS collars were programmed to transmit for 8 hours centered on 0:00 UTC once every three days. Thus, for two consecutive days the ARGOS collar did not transmit location data.

Raw Ground Penetrating Radar Data, Eklutna Glacier, Alaska; 2013
Common-offset GPR surveys were conducted with a Sensors and Software 500-MHz Pulse Ekko Pro system. We collected data from the ground, towed behind a researcher on skis or snowmobile, and from the air, strapped underneath a helicopter. All of the profiles are linked to coincident GPS observations. Coincident in-situ data is provided for calibration, and may be composed of any of the following: snow pits and/or snow-pit/snow-core combinations, probe profiles, and ablation stakes. This supplemental information may be used to calibrate velocity for conversion from time domain to depth domain. This supplemental information is provided as is, with additional information specific to usage included within the in-situ folder.


slope in the Susitna Basin - photo by Jamey Jones, USGS

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Page Last Modified: August 11 2015 09:17:58.