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Visions of a Cloudy Continent (DAAC Study)
Antarctica," said Jane Ferrigno of the U.S. Geological Survey's National Center. Prior to the advent of the Advanced Very High Resolution Radiometer (AVHRR), no other civilian satellite remote sensing system was able to view the entire South Pole area, she said. Using cloud-free AVHRR imagery, Ferrigno and a team of other USGS investigators produced the clearest view of Antarctica ever seen. Pat Chavez and his group at...
RAMPing Up (DAAC Study)
Mystery shrouds the Antarctic continent, particularly its eastern interior where few humans have explored. Satellite images obtained in 1997 for the RADARSAT Antarctic Mapping Project (RAMP) culminated in the world's first high-resolution map of Antarctica and completed the terrestrial mapping of the globe. Top: A revised mosaic map of Antarctica produced by the RAMP project. click to enlarge (379kb) Bottom: Beneath 10 feet of...
New Light on Ice Motion (DAAC Study)
Rachel Hauser November 5, 2001 Detailed antarctic temperature and climate records date only from the late 1950s, with limited information dating from the turn of the 20th century. Now, using visible and near-infrared satellite imagery, scientists have pieced together a preliminary glaciological history of Antarctica spanning nearly a millennium. The availability of new imagery from the Moderate-resolution Imaging Spectroradi...
Mosaic of Antarctica
image, with very little contrast, shows how the area would likely look to the naked eye in an airplane overflight. The bottom image uses enhanced contrast to highlight ice shelf flowlines and bottom crevasses. Bottom crevasses are cracks in the ice that form in the underside of the ice surface, and locating such crevasses through satellite imagery can enhance the safety of researchers on the ground. (Images courtesy National S...
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