Document Type

Article

Publication Date

10-6-2014

Abstract

Despitc the arid to hypcrarid climate of the Great Sahara of North Africa, pluvial climates dor- S nated the region, Radar data shed some light on the postulated Trans-African Drainage System and its relationship to: active and inactive tributaries of the Nile basin. Interpretations of recent clevation data confirm sourcc of- the river water from thc Red Ses highlands did not connect r the Atlantic Ocean across Tushka basin, highlands of Uwinate and Darfur, and Chad basin. but northward to the ancestral Nile Delta Elements op, opography and climate were considered, They show that the former segments of the Nile closely mirror present-day tributaries of the Nile basin in drainage geomelry, landscape. and climate. Ars rainfall data interpolation scenario , revealed that this basin received concurrent runoff from both flanks such as Gabgaba-Allaqi to the cast and Tushka basin tO the west, similar to present-day Sobat and White Nite tributaries, respectively. Overall thc weslern tributaries such as those of Tushka basin and Howar lead to the Nila which was. tand stll isì the bisgest river s svstem in Africa.

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