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Modelling the seasonal cycle of the exchange flow in Bab el Mandab (Red Sea)

Modelling the seasonal cycle of the exchange flow in Bab el Mandab (Red Sea)
Modelling the seasonal cycle of the exchange flow in Bab el Mandab (Red Sea)
A minimum complexity, three-layer hydraulic model has been further developed to simulate the seasonal cycle of the exchange flow in Bab el Mandab (Red Sea). Unlike earlier versions our model incorporates a realistic channel cross-section. To a good approximation the model simulates observed fluxes through the strait and the layer depths at Hanish Sill. The model results indicate that the summertime intrusion of Gulf of Aden Intermediate Water into the Red Sea has been a robust feature of the exchange for the last 10 500 years. The modern intrusion acts as a dynamic barrier to the exchange in the upper and lower layers effectively, reducing the mean annual flux in each layer by 26% and 33% compared to model runs without the intrusion.
Hydraulic control, Critical flow, Three-layer exchange, Indian Ocean, Strait
0967-0637
1551-1569
Siddall, M.
9c045dd5-498b-488b-9c67-23e24d90ebcc
Smeed, D.A.
79eece5a-c870-47f9-bba0-0a4ef0369490
Matthiesen, S.
347a786d-d6cd-4249-a8c0-fa7b0fc7f167
Rohling, E.J.
a2a27ef2-fcce-4c71-907b-e692b5ecc685
Siddall, M.
9c045dd5-498b-488b-9c67-23e24d90ebcc
Smeed, D.A.
79eece5a-c870-47f9-bba0-0a4ef0369490
Matthiesen, S.
347a786d-d6cd-4249-a8c0-fa7b0fc7f167
Rohling, E.J.
a2a27ef2-fcce-4c71-907b-e692b5ecc685

Siddall, M., Smeed, D.A., Matthiesen, S. and Rohling, E.J. (2002) Modelling the seasonal cycle of the exchange flow in Bab el Mandab (Red Sea). Deep Sea Research Part I: Oceanographic Research Papers, 49 (9), 1551-1569. (doi:10.1016/S0967-0637(02)00043-2).

Record type: Article

Abstract

A minimum complexity, three-layer hydraulic model has been further developed to simulate the seasonal cycle of the exchange flow in Bab el Mandab (Red Sea). Unlike earlier versions our model incorporates a realistic channel cross-section. To a good approximation the model simulates observed fluxes through the strait and the layer depths at Hanish Sill. The model results indicate that the summertime intrusion of Gulf of Aden Intermediate Water into the Red Sea has been a robust feature of the exchange for the last 10 500 years. The modern intrusion acts as a dynamic barrier to the exchange in the upper and lower layers effectively, reducing the mean annual flux in each layer by 26% and 33% compared to model runs without the intrusion.

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More information

Published date: 2002
Keywords: Hydraulic control, Critical flow, Three-layer exchange, Indian Ocean, Strait

Identifiers

Local EPrints ID: 6061
URI: http://eprints.soton.ac.uk/id/eprint/6061
ISSN: 0967-0637
PURE UUID: 60cf098a-1acb-4bbb-9175-c377b33440b1
ORCID for E.J. Rohling: ORCID iD orcid.org/0000-0001-5349-2158

Catalogue record

Date deposited: 10 Jun 2004
Last modified: 10 Nov 2021 02:45

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Contributors

Author: M. Siddall
Author: D.A. Smeed
Author: S. Matthiesen
Author: E.J. Rohling ORCID iD

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