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STS057-80-92
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Spacecraft nadir point: 22.4° S, 67.3° W

Photo center point: 23.0° S, 65.5° W

Nadir to Photo Center: East

Spacecraft Altitude: 258 nautical miles (478km)
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Image Caption: STS-57 Earth observation taken aboard Endeavour, Orbiter Vehicle (OV) 105, is of Rio Bermejo Development area in northwest Argentina. Astronaut photographs of agricultural development in the area of the Rio Bermejo in northwestern Argentina (called "Rio Teuco" in the lowlands of Argentina) support scientific studies of one of the 600 global environmental sites monitored by the Space Shuttle Earth Observations Project. Photographs of the Rio Bermejo headwaters and the hardwood forests of the East Andes began with STS-7 in June 1983. The 10-year record of this site leads NASA researchers to estimate that the area of former Andean closed-canopy forest now converted to ranching and agriculture in these river valleys has doubled over the past decade. Also evident in this photograph are secondary impacts from this regional forest conversion, including increased soil erosion, increased stream turbity, secondary stream anastomosing, and stream widening.