Document Type
Article
Publication Date
2000
Abstract
This paper highlights he relationship between ground-water concentration and sand accumulations in the castern Sahara by presenting a synoptic view o the surface geomorphology. It illustrates that the sand of the Sahara mainly priginated from fluvial processes, and was deposited in inland lacustrine de- pressions by palaco-rivers and strcams. This is implied by the spatial organiza- tion of palaco-channels that were revealed by radar images from spacc, the localization of major sand seas in topographic depressions, and by geoar- chacologial evidence. The fluvially-deposited sand was subsequently reshaped by acolian activity into dunes and sheets during periods of drier climates. Acolian processes are discussed, taking into account the wind currents and sand drifts, the sediment balance, and the initiation of aeolian deposits, including sand seas, using the concept of a regional aeolian action system (RAAS).
Recommended Citation
El-Baz, Farouk; Maingue, Monique; and Robinson, Cordula, "Fluvio-aeolian dynamics in the north-eastern Sahara : the realtionship between fluvial aeolian systems and ground-water concentration" (2000). Farouk El-Baz Library. 13.
https://buescholar.bue.edu.eg/farouk_el-baz_library/13