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Folders: ROOT > ScienceBase Catalog > Alaska Science Center (ASC) > _Water Ice & Landscapes ( Show direct descendants )

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This is a child item of the USGS Data Release: https://doi.org/10.5066/P9KFIRWQ This dataset contains aerial oblique digital photos taken of the arctic landscape during low altitude photo survey transects in northwest Alaska, July 2013. Three flight transects were conducted from small aircraft over the National Park Service's Arctic Network (ARCN; Bering Land Bridge National Preserve, Cape Krusenstern National Monument, Gates of the Arctic National Park and Preserve, Kobuk Valley National Park, and Noatak National Preserve) and the U.S. Fish and Wildlife Service's Selawik National Wildlife Refuge. Version History: First release: May 2014 Revised:August 2021 (ver. 1.01) Revised:August 2023 (ver. 1.1)
Categories: Data, Data Release - Revised; Tags: Aerial Photography, Alaska, Arctic Network, Bering Land Bridge National Preserve, Biota, All tags...
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This dataset contains observations of the distribution of end-of-summer snow cover on approximately 3000 glaciers across Alaska and Northwest Canada. The data are provided as: (1) GeoTIFF rasters indicating the spatial extent of end-of-summer snow cover on each glacier's surface in each year (one raster per glacier per year), and (2) yearly tables with the equilibrium line altitude and the accumulation area ratio of the glaciers derived from the snow cover extent geotiffs. Snow cover was identified in Sentinel-2 imagery using a random forest algorithm trained with a manually-created validation dataset. A series of post-processing steps were used to infill missing data from terrain shadowing and cloud cover, and...
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This data package documents selected special conditions affecting the magnitude of peak flows at streamgages in Alaska. The data consist of a table of special conditions for selected peak flows and a table of data sources. This dataset resolves ambiguity introduced by historical variations in USGS National Water Information System (NWIS; https://doi.org/10.5066/F7P55KJN) peak-flow code assignment practices or inherent in defining multiple possible conditions for a single code. For peak flows assigned a code 3 or 9 in the NWIS peak-flow database, the special conditions forming the basis for code assignment were (1) snowmelt or (2) a sudden release of water. Sudden releases of water included glacier dammed lake outburst,...
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This is a child item of the USGS Data Release: https://doi.org/10.5066/P9KFIRWQ This dataset contains aerial nadir digital photos and ecotype classification data determined from the photos. Aerial nadir photos were taken at 5 second intervals of the arctic landscape during low altitude photo survey transects in northwest Alaska, July 2013. Three flight transects were conducted from small aircraft over the National Park Service's Arctic Network (ARCN; Bering Land Bridge National Preserve, Cape Krusenstern National Monument, Gates of the Arctic National Park and Preserve, Kobuk Valley National Park, and Noatak National Preserve) and the U.S. Fish and Wildlife Service's Selawik National Wildlife Refuge. Version History:...
Categories: Data, Data Release - Revised; Tags: Aerial Photography, Alaska, Arctic Network, Bering Land Bridge National Preserve, Biota, All tags...
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This dataset is comprised of 11 geo-referenced aerial images of two study areas (Teshekpuk Lake Special Area and the Chipp River) in the National Petroleum Reserve - Alaska (NPRA) on Alaska's Arctic Coastal Plain. The images are from aerial photo survey flown by NASA in 1974, 1977, 1979 and obtained from the Earth Resources Observation and Science (EROS) Center using the USGS EarthExplorer website in 2013. The images represent a historical snapshot of the landscape from that time. Version History: First release: March 2015 Revised September 2022 (ver. 1.1)
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This dataset is comprised of one geo-referenced aerial image from the National Petroleum Reserve - Alaska (NPRA) on Alaska's Arctic Coastal Plain taken on 21 June 1955 by the U.S. Air Force and obtained from the Earth Resources Observation and Science (EROS) Center using the USGS EarthExplorer website in 2013. The image represents a historical snapshot of the landscape from that time. Version History: First release: March 2015 Revised September 2022 (ver. 1.1)
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Since 1993 the U.S. Geological Survey (USGS) has worked with the Alaska Department of Transportation and Public Facilities (ADOT&PF) to provide hydraulic assessments of scour for bridges throughout Alaska. As part of this effort, repeat channel cross section surveys, or channel soundings, have been collected at either the upstream or downstream side of bridges on an annual or as needed basis. Streambed and bank elevations are measured using USGS sounding weights and reels, weighted measuring tapes, acoustic Doppler current profilers, multibeam echo sounders and light detection and ranging and are referenced to the datum of as-built plan set to provide context for the streambed elevations in relation to bridge structures....
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This dataset provides computed remotely-sensed streamflows (RSQ) at river reaches of selected rivers in Alaska. We used the relation between water-surface elevation data derived from satellite altimetry and dynamic surface water extent data derived from LANDSAT and Sentinel imagery data with the Modified Optimized Manning Method Algorithm (MOMMA) to compute remotely sensed streamflows. Data are organized in ZIP packages named for each river reach. Reach-specific details are provided in a README file included in each river reach ZIP package. Depending on the input data available for specific reaches, we used different workflows to estimate river reach width and process the data from river reaches. Each workflow...
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This data release includes 5 child items with photos and videos taken during low altitude photo survey transects in northwest Alaska, July 2013. Three flight transects were conducted from small aircraft over the National Park Service's Arctic Network (ARCN; Bering Land Bridge National Preserve, Cape Krusenstern National Monument, Gates of the Arctic National Park and Preserve, Kobuk Valley National Park, and Noatak National Preserve) and the U.S. Fish and Wildlife Service's Selawik National Wildlife Refuge. The aerial photo surveys were flown for the WildCast Project (WILDlife Potential Habitat ForeCASTing), a collaboration of the U.S. Geological Survey, National Park Service, U.S. Fish and Wildlife Service, and...
Categories: Data, Data Release - Revised; Tags: Aerial Photography, Alaska, Arctic Network, Bering Land Bridge National Preserve, Biota, All tags...
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This dataset includes locations, and water surface elevations from two submersible pressure transducers deployed in the channel of the Tanana River downstream of Fairbanks Alaska in 2016.
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This is a child item of the USGS Data Release: https://doi.org/10.5066/P9KFIRWQ This dataset contains aerial oblique video segments from a Panasonic Lumix DMC-FZ200 (24x superzoom, variable focal length) and a Panasonic Lumix DMC-SZ7 (10x superzoom, variable focal length) of the arctic landscape during low altitude transects in northwest Alaska, July 2013. Three flight transects were conducted from small aircraft over the National Park Service's Arctic Network (ARCN; Bering Land Bridge National Preserve, Cape Krusenstern National Monument, Gates of the Arctic National Park and Preserve, Kobuk Valley National Park, and Noatak National Preserve) and the U.S. Fish and Wildlife Service's Selawik National Wildlife Refuge....
Categories: Data, Data Release - Revised; Tags: Aerial Photography, Alaska, Arctic Network, Bering Land Bridge National Preserve, Biota, All tags...
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These data comprise 505 unique geospatial raster datasets which describe persistent river ice (aufeis) occurrence within floodplains of select rivers and creeks in the 1002 Area of the Arctic National Wildlife Refuge in northern Alaska. Each raster is derived from a historical observation made by one of five Landsat satellites. Surface reflectance in the green and shortwave infrared wavelengths are used to classify the aufeis occurrence within individual pixels. Pixel values of "1" correspond to aufeis presence while "0" corresponds to its absence. Rasters are generated from cloud and snow-filtered images captured between May and September for the years 1985-2022.
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These are data from cruises carried out in April, May and July 2010 from the Copper River (AK) mouth to beyond the shelf break, approximately 150 km from shore. The focus of the dataset is the iron (Fe) data, intended to help infer the processes controlling concentrations of Fe. The data include concentrations of total dissolvable Fe (TDFe), dissolved Fe (dFe), nitrate, and salinity, temperature and fluorescence data (CTD) as background. This also includes sea surface height deviation data for a two month interval when a Yakutat eddy passed by the sampling site. Also included is a simple 1-dimensional numerical model used to simulate the the April DFe data assuming a DFe flux from shelf sediments, horizontal transport...
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This dataset is comprised of 35 geo-referenced aerial images of four study areas (Teshekpuk Lake Special Area, Chipp River, Colville River Delta, and Dalton Highway Corridor) on Alaska's Arctic Coastal Plain. The images are from aerial photo surveys flown in 1948-1949 and obtained from the Earth Resources Observation and Science (EROS) Center using the USGS EarthExplorer website. The images represent a historical snapshot of the landscape from that time. Version History: First release: March 2015 Revised September 2022 (ver. 1.1)
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This is a child item of the USGS Data Release: https://doi.org/10.5066/P9KFIRWQ This dataset contains aerial nadir video segments from a GoPro Hero3 Black Edition (focal length 2.77 mm; 60 frames per second) of the arctic landscape during low altitude photo survey transects in northwest Alaska, July 2013. Two flight transects were conducted from small aircraft over the National Park Service's Bering Land Bridge National Preserve and the U.S. Fish and Wildlife Service's Selawik National Wildlife Refuge. Version History: First release: May 2014 Revised:August 2021 (ver. 1.01) Revised:August 2023 (ver. 1.1)
Categories: Data, Data Release - Revised; Tags: Aerial Photography, Alaska, Arctic Network, Bering Land Bridge National Preserve, Biota, All tags...
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This is a child item of the USGS Data Release: https://doi.org/10.5066/P9KFIRWQ This dataset contains GPS waypoint logs and browse maps of the aircraft flight paths used during low altitude photo survey transects in northwest Alaska, July 2013. Three flight transects were conducted from small aircraft over the National Park Service's Arctic Network (ARCN; Bering Land Bridge National Preserve, Cape Krusenstern National Monument, Gates of the Arctic National Park and Preserve, Kobuk Valley National Park, and Noatak National Preserve) and the U.S. Fish and Wildlife Service's Selawik National Wildlife Refuge. Version History: First release: May 2014 Revised:August 2021 (ver. 1.01) Revised:August 2023 (ver. 1.1)
Categories: Data, Data Release - Revised; Tags: Aerial Photography, Alaska, Arctic Network, Bering Land Bridge National Preserve, Biota, All tags...


    map background search result map search result map Gulf of Alaska Shelf and Slope Iron and Nitrate Data, Copper River Region, 2010 Low-Altitude Photographic Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013 Child Item 1: Flight Path GPS Logs and Browse Maps of Low-Altitude Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013 Child Item 3: Oblique Photographs Taken During Low-Altitude Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013 Child Item 4: Nadir Videos Taken During Low-Altitude Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013 Child Item 2: Nadir Photographs Taken During Low-Altitude Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013 Water Surfaces Elevations from Pressure Transducers on the Tanana River near Fairbanks, Alaska, 2016 Aerial Images of Alaska's Arctic Coastal Plain, 1948-1949 Aerial Image of Alaska's Arctic Coastal Plain, 1955 Aerial Images of Alaska's Arctic Coastal Plain, 1974-1979 Computed Streamflow Using Satellite Data for Selected Rivers in Alaska Selected Peak-Flow Special Conditions for USGS Streamgages in Alaska Rasters of Observed Aufeis Deposits Within Rivers of the 1002 Area Based on Historical Landsat Imagery, 1985-2022 Sounding Cross Section Surveys at Alaska Bridge Crossings Child Item 5: Oblique Videos Taken During Low-Altitude Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013 Surface Water and Groundwater Hydrology and Temperature, Beaver Creek, Kenai Peninsula, Alaska, 2022-2023 Water Surfaces Elevations from Pressure Transducers on the Tanana River near Fairbanks, Alaska, 2016 Surface Water and Groundwater Hydrology and Temperature, Beaver Creek, Kenai Peninsula, Alaska, 2022-2023 Rasters of Observed Aufeis Deposits Within Rivers of the 1002 Area Based on Historical Landsat Imagery, 1985-2022 Aerial Images of Alaska's Arctic Coastal Plain, 1948-1949 Aerial Image of Alaska's Arctic Coastal Plain, 1955 Aerial Images of Alaska's Arctic Coastal Plain, 1974-1979 Low-Altitude Photographic Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013 Child Item 1: Flight Path GPS Logs and Browse Maps of Low-Altitude Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013 Child Item 3: Oblique Photographs Taken During Low-Altitude Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013 Child Item 4: Nadir Videos Taken During Low-Altitude Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013 Child Item 2: Nadir Photographs Taken During Low-Altitude Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013 Child Item 5: Oblique Videos Taken During Low-Altitude Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013 Computed Streamflow Using Satellite Data for Selected Rivers in Alaska Sounding Cross Section Surveys at Alaska Bridge Crossings Selected Peak-Flow Special Conditions for USGS Streamgages in Alaska