Farr, Tom G. (Jet Propulsion Laboratory, California Institute of Technology)
Paillou, Philippe (Observatoire Aquitain des Sciences de l'Univers, University of Bordeaux, France)
It has been 30 years since the discovery of buried river valleys in the eastern Sahara with the first Shuttle Imaging Radar. Since then, studies have continued with SIR-B and SIR-C as well as other radar systems. In addition, old lake shorelines have been found using SRTM topographic data and other satellite images. All of these studies paint a picture of wetter climates in the Sahara’s past, a fact known to archaeologists, who have found evidence of human occupation along the shores of the lakes and rivers at various times over the past few hundred thousand years.