19 Feb '12, 11pm

Lake Fitri, Chad: In the desert, a lake shows a long fight between water, wind, and climate.

Lake Fitri is an endorheic or “terminal” lake in the southern Sahara Desert. Deserts get so little rainfall that the rivers passing through them often cannot reach the sea, instead ending at depressions in the land surface where they form lakes. Astronauts on the International Space Station captured this photograph of the area in January 2012. (Note that the image is rotated so north is to the lower left.) Muddy, yellow-brown water marks the center of the basin, with a ring of dark brown muds and burnt vegetation on the exposed lake floor to the north (lower left). The shoreline supports a thin line of reeds and floating grass vegetation, which appears as dark green in the image. The usually dry Wadi Batha empties into Lake Fitri from the east (image top). Over time, water flow in Wadi Batha has created a large delta, which occupies the entire top left third of the image (...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=77197&s...

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#SatelliteImagery Lake Fitri, Chad @NASA_EO

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Lake Fitri is an endorheic or “terminal” lake in the southern Sahara Desert. Deserts get so little rainfall that the river...

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