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Sahara Desert in Libya and Chad – March 5th, 2009

March 5th, 2009 Category: Image of the day, Volcanoes

Desert in Libya - February 26th, 2009

Desert in Libya - February 26th, 2009

Close-up1

Close-up1

Close-up2

Close-up2

The sands of the Sahara Desert in southern Libya (above), slightly covered by clouds, and northern Chad (below) have different hues, ranging from tan and light yellow to golden orange to red.

Many large dunes can be observed in all the images, although they are most prominent in the second close-up.

The first close-up highlights the dunes near the northern end of a volcanic field in Chad, the Tarso Toh. It is located north of Tarso Toussidé volcano and fills valleys and plains over an area of 80 km in an east-west direction and 20-30 km in north-south direction. The field contains 150 scoria cones and two maars (broad, low-relief volcanic craters caused by a phreatomagmatic eruptions Рexplosions that occur when groundwater comes into contact with hot lava or magma).

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