Life cycle of mesoscale eddies in the Gulf of Aden
| Autor: | Mathieu Morvan, Xavier Carton, Rémy Baraille, Charly de Marez, Stéphanie Corréard, Pierre L'Hégaret |
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| Rok vydání: | 2020 |
| Předmět: |
Water mass
010504 meteorology & atmospheric sciences Aden 010505 oceanography Gulf Computational Mechanics Mesoscale meteorology Evaporation Astronomy and Astrophysics mesoscale 01 natural sciences Mesoscale eddies lifecycle Geophysics Oceanography Eddy 13. Climate action Geochemistry and Petrology Mechanics of Materials Environmental science Seawater 14. Life underwater Eddies 0105 earth and related environmental sciences |
| Zdroj: | Geophysical And Astrophysical Fluid Dynamics (0309-1929) (Informa UK Limited), 2020-09, Vol. 114, N. 4-5, P. 631-649 |
| ISSN: | 1029-0419 0309-1929 |
| DOI: | 10.1080/03091929.2019.1708348 |
| Popis: | The Red Sea Water is a warm and salty water produced in the Red Sea by evaporation induced by strong solar radiation. This dense water mass exits the Red Sea through the Strait of Bab El Mandeb, and enters the Gulf of Aden as a density current between 400 and 1000 metre depth. In the Gulf of Aden, in situ and satellites observations have shown the impact of the deeply reaching eddies dominating the mesoscale dynamics, on the spreading of the Red Sea Water. In this paper, we study the life cycle of these mesoscale eddies in the Gulf of Aden by using a regional primitive equation model at mesoscale resolution, and an eddy-tracking algorithm. The mesoscale anticyclonic eddies are formed at the mouth of the Gulf of Aden, and subsequently drift westward into the gulf. Mesoscale anticyclones are long-lived compared to the cyclones. The cyclones result from the interaction of anticyclones with the coast and the sloping topography. The wind stress, the bathymetry and the surrounding eddy field drive the life cycle of eddies. Finally, Kelvin and internal waves are triggered along the northern and southern coasts. |
| Databáze: | OpenAIRE |
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