Exchange flow between the Red Sea and the Gulf of Aden.

Abstract. A hydraulic model has been developed to simulate the seasonal cycle of the exchange flow in the Strait of Bab el Mandab. To a good approximation the model recreates observed fluxes through the strait. We attribute this success to our use of a realistic channel cross-section. The model results indicate that the summertime intrusion of Gulf of Aden Intermediate Water into the Red Sea has been a feature of the exchange for at least 10 500 years