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Displaying entries 1 - 20 of 81 in total

Landsat Land Cover Map of Northern Alaska (Muller et al. 1999)

Aga northslope landcover muller 1999 This map was created for the US National Science Foundation Land-Atmosphere-Ice Interactions (LAII) Flux Study and the Arctic Transitions in the Land-Atmosphere System (ATLAS) Study (OPP-9318530 and OPP-9415554). The map covers all of northern Alaska, from the Brooks Range divide to the coast. It is a raster (tif) map, with 50 m pixels, and 9 land cover categories. It is based on an...
Complete
1998-06-01
2018-08-09 15:11:50 -0800
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Data Full Record

NSSI Landcover GIS Data: Landcover Mapping for North Slope of Alaska

Nslandcover Data is provided as raster GIS layer in .img format. The project final report is included in the full data download or can be downloaded separately. This map is the outcome of a multi-year project to produce a moderate resolution landcover base map for the North Slope of Alaska to serve as a primary base layer for long-term science and planning activities on the North Slope. New Landsat...
Complete
2018-08-09 15:17:19 -0800
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Ecosystems of Northern Alaska (Jorgenson & Heiner 2003)

Noak ecosystems poster%202010 preview Map image, GIS data and publication pending - This map was funded by The Nature Conservancy to provide a seamless ecological context for analysis of the distribution of biodiversity in the Northern Alaska ecoregion. It covers all of Alaska north of the latitudinal treeline on the southern side of the Brooks Range. It includes of the Alaska North Slope and most of the Brooks Range. It is in...
Complete
2018-08-09 15:11:57 -0800
Data Full Record

Prudhoe Bay 1949 BAR Photography WMS

Prudhoe bay 1949 wms WMS feed for 1949 BAR photography mosaic for the Prudhoe Bay region. Raw data is available on request, contact GINA at: support@gina.alaska.edu, with data request.
Complete
2018-08-09 15:11:47 -0800
Data Full Record

Toolik Lake Area Surficial Geomorphology

Aga toolik area surfgeom walker 2008 Map of the Toolik Lake research area surficial geomorphology . The attribute table contains data for vegetation, surficial geomorphology, surficial geology, glacial geology, and water.
Complete
2018-08-09 15:11:48 -0800
Data Full Record

Toolik Lake Grid Percent Water

Aga toolik grid pctwtr walker 2008 Percent water map of the Toolik Lake research grid. The attribute table contains data for vegetation, surficial geomorphology, surficial geology, glacial geology, and water.
Complete
2018-08-09 15:11:48 -0800
Data Full Record

Toolik Lake Grid DEM

Aga toolik grid dem buchhorn 2015 This DEM was created from the contour lines of the Aerometrics orthophoto from 1996. In addition the 1 x1 km CALM grid with 121 points (every 100 m) was resurveyed in summer 2014 with a Topcon RTK. This RTK data as well as a lake and river layer was included in the DEM creation. The DEM accuracy is = +/- 1m.
Complete
2018-08-09 15:11:52 -0800
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Barrow

Walker IBP site and toporid with 7 themes. These are currently in a paper/mylar version and need to be digitized. Once complete, they will be available for download here.
Unknown
2018-08-09 15:11:52 -0800
Data Full Record

Arctic Alaska Bioclimate Subzone Map

Aga arctic ak bioclimate 2005 Various authors, working with different geobotanical traditions, have divided the Arctic into bioclimatic regions using a variety of terminologies. The origins of these different terms and approaches have been reviewed by the Panarctic Flora (PAF) initiative (Elvebakk 1999). The PAF and CAVM accepted a five-subzone version of the Russian zonal approach. The subzone boundaries are somewhat...
Complete
2018-09-07 14:49:22 -0800
Data Full Record

Alaska Arctic Vegetation Archive: North Slope ARCSS/LAII Flux Study (Walker 1995-1996 unpublished data)

Aava nsflux dwalker 1995 plotmap anc The vegetation and soils at the North Slope Arctic System Science/Land-Atmosphere-Ice Interactions ARCSS/LAII Flux tower sites of F. S. Chapin and W. Oechel on the North Slope of Alaska were described by D. A. Walker, J. Bockheim, and C. L. Ping in 1995 and 1996. The primary source documents for this dataset are a collection of unpublished data for 29 plots by D. A. Walker (1995 -1996...
Ongoing
1995-08-15
1996-08-18
2018-08-09 15:11:58 -0800
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Sagwon Patterned-Ground 10 x 10 m Grids

Aga sagwon acidic vegetation 2006 The Sagwon patterned-ground grids are located at the northern edge of the rolling foothills, at the boundary with the flatter coastal plain. This is also the boundary between Subzones E and D, and between the acidic tundra to the south and the nonacidic tundra to the north. There are three 10 x 10 m grids, one with acidic tussock-sedge, erect dwarf-shrub, moss vegetation (MAT), and two grids in...
Ongoing
2018-09-18 17:26:05 -0800
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Data Full Record

Arctic Alaska Elevation Map

Aga arctic ak elevation 1993 Elevation strongly influences soil moisture and patterns of tundra plant communities. Areas less than 100 m above sea level were separated to show low-elevation plains. Areas above 100 m elevation were divided into 333-m intervals to show decreases of about 2 °C, as predicted by the adiabatic lapse rate of 6 °C per 1000 m. This corresponds to the change in mean July temperature between...
Complete
2018-09-07 14:52:39 -0800
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Seward Peninsula Range Mapping (Swanson et al. 1985)

Aga seward vegetation swanson 1985 In 1976, the Northwest Alaska Native Association (NANA) and the Reindeer Herders Association (RHA) asked the Alaska Soil and Water Conservation District and the United States Department of Agriculture Soil Conservation Service (SCS) for assistance in developing and applying range management plans for reindeer. In response the SCS carried out a 15 million acre survey of 19 reindeer grazing...
Complete
2018-08-09 15:17:09 -0800
Data Full Record

Upper Kuparuk Glacial Geology

Aga upper kuparuk glacialgeol simplified hamilton 2003 This vector (shp) map is a simplified version (1:25000) of Thomas Hamilton's glacial geology map of the Upper Kuparuk River region (Hamilton 2003), which provides detailed (1:63,360-scale) surficial-geologic mapping in the Dalton Highway area, from the Sagavanirktok to the Itkillik Rivers, in the west-central Philip Smith Mountains quadrangle. The map area extends from the northern flank of the...
Complete
2018-08-09 15:17:10 -0800
Data Full Record

Upper Kuparuk River Region SPOT CIR

Aga upper kuparuk spot cir 1995 The French SPOT satellite data (20-m resolution) were obtained on 28 July 1989 and provides a view of the mapped region from space. The false-color infrared image shows more densely vegetated areas as brighter red tones. When compared with the glacial geology map, the older Sagavanirktok-age glacial landscapes have few lakes and redder tones indicating more dense vegetation, and the younger...
Complete
2018-08-09 15:17:11 -0800
Data Full Record

Arctic Alaska Landscape Map

Aga arctic ak landscape 2005 The physiography map displays regions of plains, hills, mountains, glaciers and lakes. Generally, plains are flat or gently rolling landscapes less than 200 m above sea level. Hills are more dissected than plains (more surface roughness) and are 200-500 m in elevation. Mountains have greater surface roughness and are above 500 m in elevation. The Alaska Arctic Tundra Vegetation Map is a more...
Complete
2018-10-09 14:00:10 -0800
Data Full Record

Arctic Alaska Substrate Chemistry Map

Aga arctic ak substrate 2005 Differences in substrate chemistry, including pH, govern the availability of essential plant nutrients. Soils in the circumneutral range (pH 5.5-7.2) are generally mineral rich, whereas the full suite of essential nutrients is often unavailable in acidic soils (pH < 5.5) or in soils associated with calcareous bedrock (pH > 7.2). The latter often have unique assemblages of plant species. The...
Complete
2018-10-09 14:04:05 -0800
Data Full Record

Circumpolar Arctic AVHRR NDVI Trend 1982-2008 (Bhatt et al. 2010)

Aga circumpolar avhrr ndvi 1995 The normalized difference vegetation index (NDVI) is a measure of greenness. NDVI was calculated as: NDVI = (NIR - R) / (NIR + R), where NIR is the spectral reflectance in the AVHRR near-infrared channel (0.725-1.1 µm, channel 2) where light-reflectance from the plant canopy is dominant, and R is the reflectance in the red channel (0.5 to 0.68 µm, channel 1), the portion of the spectrum where...
Complete
2018-10-09 19:17:41 -0800
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Kuparuk River Basin Landsat CIR Image

Ku cir u6 Kuparuk River Basin False Color-Infrared (CIR) image - Registered and rectified CIR image created in ENVI from the MSS image. It is a raster map (tiff), with 30-m pixel resolution. Back to <a href="/catalog/entries/5450-kuparuk-river-basin-vegetation-map-walker-1997">Kuparuk River Basin</a>
Complete
2018-10-11 15:38:46 -0800
Data Full Record

Kuparuk River Basin Hydrology Map

Ku hydro Hydrology of the Kuparuk River basin, including streams, rivers, ponds, lakes, and coastline. The map includes line features as well as polygon features (.shp). This map was drawn by Skip Walker, derived by interpreting the CIR version of the GTOPO30 Landsat MSS image created in 1999 by Jiong Jia. Back to <a href="/catalog/entries/5450-kuparuk-river-basin-vegetation-map-walker-1997">Kuparuk...
Complete
2018-10-11 19:26:39 -0800
Data Full Record