Aral Sea

Aral Sea
  • Credit:

    Jacques Descloitres, MODIS Rapid Response Team, NASA/GSFC

The jade-green waters of the Aral Sea dominate this true-color Moderate Resolution Imaging Spectroradiometer (MODIS) image captured by NASA´s Terra satellite on August 12, 2003. Once the fourth largest inland sea, the Aral Sea in southern Kazakhstan and northern Uzbekistan has divided into three bodies of water. While the Northern Aral Sea and the Southern Aral Sea have been separate for much of the 1990s, the Southern Aral Sea split along a north-south axis more recently.

The Sea is shrinking for several reasons. First, the Sea is surrounded by the Central Asian deserts, so about 60 square kilometers of water evaporates from its surface every year. Also, agricultural development in the region over the past forty years decreased the amount of water flowing from the rivers Syr Darya and Amu Darya into the Sea. By 1995, the volume of the Sea had decreased by 75 percent, and by 2000, 42,000 square kilometers of land had been exposed as a result of receding water levels.

As the salty water evaporates, it leaves dry salt beds seen as bright, white fields along the shore in this image. The bright green color of the Sea is probably caused by sediment in the shallow waters. To the south of the Sea, a web of vegetation along the banks of the river Amu Darya appears dark green against the tan desert land. The body of water in bottom left of the image is Sariqumish Kuli, a lake on the northern borders of Turkmenistan.

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Metadata

  • Data Date:

    August 12, 2003
  • Visualization Date:

    September 30, 2003
  • Sensor(s):

    Aqua - MODIS

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NASA - National Aeronautics and Space Administration