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| Earth Resources Observation and Science (EROS) |
United States Antarctic Resource Center (USARC)
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USARC Photography |
Product DescriptionImagery archived at the United States Antarctic Resource Center (USARC) of the U.S. Geological Survey (USGS) is the United States’ contribution to the collection of aerial photography and maps over Antarctica. USARC data are used by scientists and others to determine geologic features, analyze ice stream flow, and monitor penguin and seal populations. Several types of mapping cameras and film formats have been used to acquire over 300,000 frames of photography since 1946, with annual acquisitions since 1980. The majority of the USARC photography is panchromatic black and white, but more recent acquisitions include natural color and color-infrared, archived mainly on 9-inch film. Fewer than 30,000 frames (less than 10 percent) of the photography are archived on 70-mm film. Spatial resolutions vary as a function of photographic scale, which ranges from 1:1,000 to 1:64,000. The original film negatives are stored at the USGS Center for Earth Resources Observation and Science (EROS). The USGS archives most of the film taken over Antarctica that is held in the United States. The USGS is responsible for maintaining the USARC, which is a repository and distribution site for all cartographic materials covering Antarctica that are produced by the United States and other participating USARC nations. The USARC is located at the USGS National Center in Reston, VA. Additional Information: Back to TopDigital File Sizes & PricingHigh resolution Scanned: $30.00 per frame See table below for availability.
** Color/CIR film source is not available at a 7 micron spot size because the resulting image file size is too large. Actual file sizes may vary from those listed in the table above. Metadata printed on the film are scanned along with the photographic data, and a USGS visual identifier is embedded in the image. Medium Resolution Digitized Product: Web-Enabled DownloadUSGS EROS has made USARC Medium Resolution Digitized Products available for immediate download. The Medium Resolution Digitized Product files are created at approximately 400 dpi with an output image size of about five inches square. The file sizes are approximately 15 megabytes for black and white images and 45 megabytes for color images. The files are stored in a TIFF format. Medium Resolution Digitized images are available on DVD at $3.00 per frame, or Web-Enabled Download. Back to TopSearch & OrderRequired information for ordering USARC aerial photographs includes the TMA mission number, fan (roll) number, and frame numbers. The fan number is either 31L (left oblique), 32V (vertical), or 33R (right oblique). All USARC photography can be searched, downloaded, and/or ordered through EarthExplorer. Contact USGS Customer Services for further information. Other sources for searching and ordering:Businesses that can provide printed images from USGS digital data. Back to Top | ||||||||||||||||||||||||||||||||
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