Document Type
Article
Publication Date
2014
Abstract
Despitc the arid to hypcrarid climate of the Great Sahara of North Africa, pluvial climatcs dom- inated the rexion. Radar data shed some 1ight on the postulated Trans-African Drainage System and its rclationship to activc and inactivc tributaries of the Nile basin, Interprctations of recent clevation data confirm n souree of the river watcr from the Red Sea highlands did not connect the Atlantic Ocean across Tushka basin, highlands of Uwinate and Darfur, and Chad basin, but northward to the ancestral Nile Delta. Elements of topography and climate were considered. They show thal the former segmenls of the Nile closely mirror present-day tributaries of the Nile basin in drainage geometry, landseape, and climale. A rainfall data interpolation scenario revealed that this basin received coneurrent runoff from both flanks such as Gabgaba-Allaai to the cast and Tushka basin to the west, similar to present-day Sobat and White Nile tributaries, respectively. Overall the western tributaries such as those of Tushka basin and Howar lead to the Nile, which was (and still is) the biggest river system in Africa.
Recommended Citation
Abdelkareem, Mohamed and El-Baz, Farouk, "Regional view of a trans-African drainage system" (2014). Farouk El-Baz Library. 251.
https://buescholar.bue.edu.eg/farouk_el-baz_library/251