STS069-713-91

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Spacecraft nadir point: 4.7° N, 38.5° E

Photo center point: 4.0° N, 36.0° E

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Nadir to Photo Center: West

Spacecraft Altitude: 185 nautical miles (343km)
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Image Caption: Omo Delta One of our long-term
environmental study sites is the Omo Delta at the north end of Lake
Turkana (Rudolph). The environmental interest in this instance is the
documentation of the delta's extension into the lake. This delta
extension, or aggradation, is felt to be the result of large-scale
soil erosion in the recently deforested areas of Ethiopia in the
watershed of the Omo River and lake level fluctuations.

Using digitized, rectified, classified, and mensurated Shuttle
photography, it has been determined that the Omo Delta has increased
in area by approximately 400% to about 1800 sq km since it was first
photographed during the Gemini program in 1965

These photos documents the long-term and increasing turbidity of Lake
Turkana and the continuing delta extension southward by both the
northwest and northeast distributaries of the Omo River.