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Displaying entries 81 - 100 of 128 in total

Geobotanical Atlas of the Prudhoe Bay Region (Walker et al. 1980)

Walker%20et%20al%201980%20geobotanical%20atlas%20300 Alaska Geobotany Center (AGC) - This map covers most of the Prudhoe Bay Oilfield on the North Slope of Alaska that was under development in 1980, covering 145 km^2. The map synthesizes work done for the US Army Corps of Engineers CRREL, the International Biome Program, and the UNESCO MAB Project 6. The mapping was based on aerial photographs taken in 1973 at a scale of 1:6000. The maps are thus a static representation of a...
Ongoing
2019-08-16 13:12:04 -0800
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Happy Valley Patterned-Ground 10 x 10 m Grids

Aga happy valley hillcrest vegetation 2006 Alaska Geobotany Center (AGC) - The Happy Valley patterned-ground grids are located in Subzone E, the warmest part of the Arctic, in the foothills of the Brooks Range, just west of the Sagavanirktok River and the Dalton Highway. There are three 10 x 10-m grids along a hill slope, one on the crest of the hill (dry), one on the mid-slope (mesic), and one on the toe slope (wet). All three have tussock-sedge, erect dwarf-shrub,...
Unknown
2019-08-16 13:57:14 -0800
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Howe Island Patterned-Ground 10 x 10 m Grids

Alaska Geobotany Center (AGC) - The Howe Island biocomplexity grid is located on a 1.5 x 0.5 km island off the delta of the Sagavanirktok River, west of the Endicott Causeway in the Prudhoe Bay oilfield, AK. There is one 10 x 10 m grid, with a complex of vegetation types created by 10 to 30-m polygonal cracking due to permafrost ice-wedges, smaller 1 to 3-m non-sorted circles, and small 10-20 cm surficial desiccation...
Complete
2019-08-16 14:01:36 -0800
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Imnavait Creek Area (Walker & Maier 2008)

Walker%26maier 2008 side 2 Alaska Geobotany Center (AGC) - The Imnavait Creek vegetation area is located near the center of the Upper Kuparuk River region, east of Toolik Lake. It encloses a 20-km^2 area south of the Dalton Highway that includes both Imnavait Creek and the Toolik River in the center and stretches from the Kuparuk River on the west to the headwaters of Oksrukuyik Creek on the east. It includes the experimental areas around Imnavait...
Complete
2019-08-16 14:11:25 -0800
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Ivotuk Vegetation Maps (Reidel et al. 2005)

Alaska Geobotany Center (AGC) - The Ivotuk study site is located in northwestern Alaska, on the North Slope of the Brooks Mountains Range. The study site was chosen because four tundra vegetation types, moist acidic tundra (MAT), moist nonacidic tundra (MNT), mossy tussock tundra, and shrub tundra exist within a 2 km^2 area. This project was funded by the NSF Arctic System Sciences, Land-Atmosphere-Ice Interactions Program...
Unknown
1999-01-01
2005-12-31
2019-08-16 13:06:22 -0800
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Kuparuk River Basin Elevation Map

Ku topo u6 Alaska Geobotany Center (AGC) - Kuparuk River Basin elevation (m) is a grid map (tif) with 30-m pixels. Data are taken from the GTOPO30 global digital elevation model (DEM) (Gesch et al. 1999) and are at approximately 1 km spacing. Back to [Kuparuk River Basin](/catalog/entries/5450-kuparuk-river-basin-vegetation-map-walker-1997) Go to **Website Link :: Toolik Arctic Geobotanical Atlas** below for details on legend...
Complete
2019-08-15 14:04:02 -0800
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Kuparuk River Basin Hydrology Map

Ku hydro Alaska Geobotany Center (AGC) - 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 [Kuparuk River...
Complete
2019-08-15 14:07:37 -0800
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Kuparuk River Basin Landsat False-CIR Image

Ku cir u6 Alaska Geobotany Center (AGC) - 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 [Kuparuk River Basin](/catalog/entries/5450-kuparuk-river-basin-vegetation-map-walker-1997) Go to **Website Link :: Toolik Arctic Geobotanical Atlas** below for details on legend units, photos of map...
Complete
2019-08-15 14:10:06 -0800
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Kuparuk River Basin Landscape Units Map

Aga kuparuk basin landscape walker 2009 Alaska Geobotany Center (AGC) - Generalized landscape units for Kuparuk River basin. Polygon coverage of landscape units for the Kuparuk River watershed with seven units. 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 [Kuparuk River Basin](/catalog/entries/5450-kuparuk-river-basin-vegetation-map-walker-1997) Go to...
Complete
2019-08-15 14:08:27 -0800
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Kuparuk River Basin Vegetation Map (Muller et al. 1998)

Aga kuparuk basin vegetation walker 2003 Alaska Geobotany Center (AGC) - The vegetation of the Kuparuk River watershed was mapped for several US National Science Foundation projects, including the Arctic System Science Flux Study and the Long-Term Ecological Research program (Muller et al. 1998). The Kuparuk Basin map is a raster (tif) map, with 50-m pixels, and 8 land cover categories. The boundaries of the map form a rectangle that encompasses the entire...
Complete
2019-08-26 13:44:20 -0800
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Landsat MSS-derived land-cover map of the Seward Peninsula, Alaska

Aga seward landcover thayer snyder 2000 Alaska Geobotany Center (AGC) - This land cover map of the Seward Peninsula is based on a classification of Multi-Spectral Scanner (MSS) data. The Landsat multiple scene mosaic was furnished by the USGS, EROS Data Center, and an Isoclass clustering algorithm used to arrive at 10 broad land-cover classes. **References** Raynolds, M.K., Martin, C.R., Walker, D.A., Moody, A., Wirth, D., Thayer-Snyder, C. 2002. ATLAS...
Complete
2019-08-19 12:08:35 -0800
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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
2019-08-02 12:01:37 -0800
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NSSI Landcover GIS Data: Landcover Mapping for North Slope of Alaska (Ducks Unlimited, 2013)

Nslandcover Alaska Geobotany Center (AGC) - 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
2019-08-26 13:56:56 -0800
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Patterned-Ground 10 x 10 m Grids (Raynolds et al. 2005)

Alaska Geobotany Center (AGC) - This mapping includes six locations along the Dalton Highway and in the Prudhoe Bay Oilfield area, forming a north-south transect across the climate gradient on the North Slope of Alaska. From south to north, the locations are Happy Valley, Sagwon, Franklin Bluffs, Deadhorse, West Dock, and Howe Island. At each location, 10 x 10 m grids were mapped to characterize the heterogeneity of...
Complete
2019-08-20 13:59:19 -0800
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Prudhoe Bay 1949 BAR Photography WMS

Prudhoe bay 1949 wms Alaska Geobotany Center (AGC) - 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
2019-08-16 12:05:45 -0800
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Prudhoe Bay Cumulative Impact Map B: Raynolds 2014

Aga prudhoe b change 2010 Alaska Geobotany Center (AGC) - Map B of the historical infrastructure changes for the Prudhoe Bay Oilfield for 10 dates from the initial oil discovery in 1968–2011. Aerial photos taken in 1949 and 1968 were used to define the geobotanical characteristics prior to development. Infrastructure changes were digitized from each successive analysis year (1970, 1972, 1973, 1977, 1979, 1983, 1990, 2001, and 2010). Polygon fields...
Complete
2019-08-20 14:46:40 -0800
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Prudhoe Bay Cumulative Impact Map A: Raynolds 2014

Aga prudhoe a human disturbance 2010 Alaska Geobotany Center (AGC) - Map A of the historical infrastructure changes for the Prudhoe Bay Oilfield for 10 dates from the initial oil discovery in 1968–2011. Aerial photos taken in 1949 and 1968 were used to define the geobotanical characteristics prior to development. Infrastructure changes were digitized from each successive analysis year (1970, 1972, 1973, 1977, 1979, 1983, 1990, 2001, and 2010). Polygon fields...
Complete
2019-08-16 13:07:31 -0800
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Prudhoe Bay Cumulative Impact Map C: Raynolds 2014

Aga prudhoe c change 2010 Alaska Geobotany Center (AGC) - Map C of the historical infrastructure changes for the Prudhoe Bay Oilfield for 10 dates from the initial oil discovery in 1968–2011. Aerial photos taken in 1949 and 1968 were used to define the geobotanical characteristics prior to development. Infrastructure changes were digitized from each successive analysis year (1970, 1972, 1973, 1977, 1979, 1983, 1990, 2001, and 2010). Polygon fields...
Complete
2019-08-16 13:30:08 -0800
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Sagwon Patterned-Ground 10 x 10 m Grids

Aga sagwon acidic vegetation 2006 Alaska Geobotany Center (AGC) - 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
2019-08-16 13:55:37 -0800
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Seward Peninsula Range Mapping (Swanson et al. 1985)

Aga seward vegetation swanson 1985 Alaska Geobotany Center (AGC) - 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
2019-08-16 12:28:52 -0800
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