Impacts of the closure of the Mozambique Channel on the southwest Indian Ocean circulation: A regional numerical simulation

IF 2.7 3区 地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY Journal of Marine Systems Pub Date : 2025-01-01 DOI:10.1016/j.jmarsys.2024.104024
Théo Le Hir , Pierrick Penven , Thierry Huck , Romain Pellen , Maryline Moulin , Marina Rabineau , Daniel Aslanian
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Abstract

Paleobathymetric reconstructions suggest that 35 million years ago, local uplift of the Davie Ridge could have temporarily raised a continental land–bridge between Africa and Madagascar and dramatically affected their connectivity. Numerical simulations of a regional model of the southwest Indian Ocean at mesoscale resolution are performed to investigate the consequences of such a closure of the Mozambique Channel. Compared to a reference simulation of present day circulation, blocking the Mozambique Channel results in a redistribution of the transport around Madagascar dramatically strengthening the East Madagascar Current and eddy variability south of Madagascar, broadening the Agulhas Current, and modifying water mass properties and bottom circulation.

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来源期刊
Journal of Marine Systems
Journal of Marine Systems 地学-地球科学综合
CiteScore
6.20
自引率
3.60%
发文量
81
审稿时长
6 months
期刊介绍: The Journal of Marine Systems provides a medium for interdisciplinary exchange between physical, chemical and biological oceanographers and marine geologists. The journal welcomes original research papers and review articles. Preference will be given to interdisciplinary approaches to marine systems.
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