Imagery and Related GIS Data for Barrow, Alaska, USA

This product suite contains imagery and related Geographic Information Systems (GIS) data to support multi-disciplinary research of environmental changes in the Barrow, Alaska area. The imagery and data take advantage of state-of-the-art technologies to provide baseline geospatial data for education, outreach, and collaborative research in this area of focused scientific interest.

This suite contains high-resolution rectified aerial photography, QuickBird satellite imagery, and Interferometric Synthetic Aperture Radar (IFSAR) imagery. All data are unrestricted and publically available except for the high resolution QuickBird and IFSAR products, which are available only to National Science Foundation (NSF)-funded inverstigators.

High-Resolution Rectified Aerial Photography for Collaborative Research of Environmental Change at Barrow, Alaska, USA

Barrow 1979 orthorectified aerial photograph index map

Barrow 1979 orthorectified aerial photograph index map showing frame numbers.

Dates 4 August 1948, 29 July 1949, 12-14 August 1955, 12-24 August 1962, 14 July 1964, 15 July 1979, 31 August 1984, and 16 July 1997
Media Two DVDs
Spatial
coverage		 70.90 - 71.45° N, 155.40 - 157.47° W
Contents This data set includes aerial photography of Barrow, Alaska that has been geocorrected to a 2002 QuickBird satellite image or IFSAR imagery. Data are in GeoTIFF and ESRI Shapefile formats with FGDC compliant metadata.
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QuickBird Data Sets: Imagery and GIS Layers

These data sets contain QuickBird satellite imagery, and related Geographic Information Systems (GIS) layers. These products share a common projection, spatial extent, and data format. The primary QuickBird data sets were acquired by DigitialGlobe from 1 to 2 August 2002, and consist of orthorectified satellite imagery. FGDC-compliant metadata for all value-added data sets are provided in text, HTML, and XML formats. The satellite imagery depicts the first-reflective visual and near infrared surfaces during acquisition, and is useful for visualization, mapping, georectification, and a variety of analyses.

High-Resolution QuickBird Imagery and Related GIS Layers for Barrow, Alaska, USA

Sample Pan QuickBird image at 0.7 m resolution
Sample Pan QuickBird image at 0.7 m resolution.
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Dates 1 to 2 August 2002
Media Four DVDs
Spatial
coverage		 QuickBird image: 156.15 - 157.07° W, 71.15 - 71.41° N
Barrow Quadrangle subset: 156.29 - 156.89° W, 71.25 - 71.40° N
Contents QuickBird panchromatic image: GeoTIFF, 0.7 m resolution, 1 band, first-reflective visual through near infrared (445-900 nm) surfaces, 16 and 8 bit.

QuickBird multispectral image: GeoTIFF, 2.8 m resolution, 4 bands, first-reflective visual and near infrared surfaces.16 and 8 bit.

Value-added GIS layers: ESRI Shapefiles. Layers include 1:250,000 Digital Raster Graphic (DRG) and index map, 1:63,360 DRG and index map, QuickBird tiles, and extent rectangles.
Note: This product is available only to investigators funded specifically from the National Science Foundation (NSF), Office of Polar Programs (OPP), Arctic Sciences Section. You must provide an NSF-OPP grant number for verification. See Reduced-Resolution QuickBird for a publicly accessible version of these data.
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Reduced-Resolution QuickBird Imagery and Related GIS Layers for Barrow, Alaska, USA

Sample MSS QuickBird image at 10 m resolution

Sample MSS QuickBird image at 10 m resolution.
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Dates 1 to 2 August 2002
Media FTP, CD-ROM
Spatial
coverage		 QuickBird image: 156.15 - 157.07° W, 71.15 - 71.41° N
Barrow Quadrangle subset: 156.29 - 156.89° W, 71.25 - 71.40° N
Contents QuickBird multispectral image: GeoTIFF, 10 m resolution, 4 bands, first-reflective visual and near infrared surfaces, 16 and 8 bit.

Value-added GIS layers: ESRI Shapefiles. Layers include 1:250,000 Digital Raster Graphic (DRG) and index map, 1:63,360 DRG and index map, QuickBird tiles, and extent rectangles.
This product is available to the general public. National Science Foundation (NSF) Office of Polar Programs (OPP) Arctic Sciences-funded investigators are encouraged to request and use the high-resolution version of these data (see High-Resolution QuickBird).
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IFSAR Data Sets: Imagery, Terrain Models, and GIS Layers

These data sets contain Interferometric Synthetic Aperture Radar (IFSAR) imagery and terrain models, and related Geographic Information Systems (GIS) layers. These data sets share a common projection, spatial extent, and data format. The primary IFSAR data sets were acquired by Intermap Technologies from 27 to 29 July 2002, and consist of Orthorectified Radar Imagery (ORRI), a Digital Surface Model (DSM), and a Digital Terrain Model (DTM).

High-Resolution IFSAR Imagery and Related Data for Barrow, Alaska, USA

Example DSM at 5 m resolution

Sample DSM at 5 m resolution.
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Dates 27 to 29 July 2002
Media Five DVDs
Spatial
coverage		 Barrow Peninsula: 155.39 - 157.48° W, 70.86 - 71.47° N
 Barrow triangle subset: 156.13 - 157.08° W, 71.14 - 71.42° N
Contents IFSAR Digital Surface Model (DSM): 5 m resolution, "first-surface" reflective elevation model, ArcInfo grid and floating-point binary formats.

IFSAR Digital Terrain Model (DTM): 5 m resolution, filtered elevation model, ArcInfo grid and floating-point binary formats.

IFSAR Orthorectified Radar Imagery (ORRI): 1.25 m resolution, radar surface reflectance, GeoTIFF format.

Value-added GIS layers: ArcInfo grid and ESRI Shapefiles. Layers include aspect, shaded relief, slope, contours, 1:250,000 Digital Raster Graphic (DRG) and index map, 1:63,360 DRG and index map, quarter quadrangles, and Barrow Peninsula extent.
Note: This product is available only to National Science Foundation (NSF)-funded investigators. You must provide an NSF grant number for verification. See Reduced-Resolution IFSAR for a publicly accessible version of these data.
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Reduced-Resolution IFSAR Imagery and Related Data for Barrow, Alaska, USA

Example reduced-resolution DSM

Sample DSM at 20 m resolution.
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Dates 27 to 29 July 2002
Media FTP, CD-ROM
Spatial
coverage:		 Barrow Peninsula: 155.39 - 157.48° W, 70.86 - 71.47° N
Barrow triangle subset: 156.13 - 157.08° W, 71.14 - 71.42° N
Contents IFSAR Digital Surface Model (DSM): 20 m resolution, "first-surface" reflective elevation model, ArcInfo grid and floating-point binary formats.

IFSAR Digital Terrain Model (DTM): 20 m resolution, filtered elevation model, ArcInfo grid and floating-point binary formats.

IFSAR Orthorectified Radar Imagery (ORRI): 5 m resolution, radar surface reflectance, GeoTIFF format.

Value-added GIS layers: ArcInfo grid and ESRI Shapefiles. Layers include aspect, shaded relief, slope, contours, 1:250,000 Digital Raster Graphic (DRG) and index map, 1:63,360 DRG and index map, quarter quadrangles, and Barrow Peninsula extent.
This product is available to the general public. NSF-funded investigators are encouraged to request and use the high-resolution version of these data (see High-Resolution IFSAR).
Access data and documentation.

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