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 STS065-84-014 (thumbnail)
640x480 image
 
   Photo ID:

   STS065-84-014   


   Program:

   Shuttle   


   Mission:

   STS-065


   Date Taken:

   1994-07-23


   Film Type:

   70mm

Title:
STS-65 Earth observation of Lake Chad, Africa, taken aboard Columbia, OV-102
Description:
STS-65 Earth observation taken aboard Columbia, Orbiter Vehicle (OV) 102, shows Lake Chad, Africa. This is another long term ecological monitoring site for NASA scientists. Lake Chad was first photographed from space in 1965. A 25-year length-of-record data set exists for this environmentally important area. A number of these scenes have been digitized, rectified, classified and results show that the lake area has been shrinking and only 15% to 20% of the surface water is visible on space images. NASA's objective in monitoring this lake is to document the intra- and interannual areal changes of the largest standing water body in the Sahelian biome of North Africa. These areal changes are an indicator of the presence or absence of drought across the arguably overpopulated, overgrazed, and over biological carrying capacity limits nations of the Sahel.
Subject Terms:
AFRICA COLUMBIA (ORBITER) EARTH OBSERVATIONS (FROM SPACE) LAKES STS-65
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Last Update: 11/1/2006

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