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| These
images of the Canada Glacier region of Antarctica were created using data
from NASA’s Airborne Topographic Mapper. They were processed using
software developed at Ohio State University that removes error from the
data. The grayscale image to the upper right shows changes in the elevation
of land and ice in the region. That image can be combined with data from
the area that was taken by other instruments, such as the image on the lower
left, which was taken by NASA’s Landsat 7 satellite. The resulting
image (lower right) offers scientists much information about the region.
Photo courtesy of Ohio State University. |
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| This
photograph of the Canada Glacier region of Antarctica demonstrates some
of the challenges faced by scientists who want to use satellites to map
the continent. Contrasting regions of light and dark, mixed with drastic
changes in elevation, can cause errors in measurements taken remotely by
airborne instruments and satellites. Scientists at Ohio State University
have developed software to remove errors from such measurements. Photo courtesy
of Ohio State University. |
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| NASA
image showing newly named ice streams on the West Antarctic Ice Sheet. Mercer
Ice Stream named for famed Ohio State geologist John Mercer who predicted
that one of the first effects of global climate change would appear with
the weakening of the West Antarctic Ice Sheet. Whillans Ice Stream named
for former Ohio State glaciologist Ian Whillans. Van Der Veen Ice Stream
named for current Ohio State researcher Kees Van Der Veen. |
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A
composite image map of the Antarctic continent constructed from satellite
photos. The West Antarctic Ice Sheet is on the left side of the image. |
