Chaotic and regular trajectories in the Antarctic Circumpolar Current
Methods from chaos theory are applied to the analysis of the circulation in the Southern Ocean, using velocity fields produced by a realistic global ocean model. We plot the intersections of individual trajectories encircling Antarctica with a vertical plane in the Drake passage. This so‐called Poin...
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| Veröffentlicht in: | Tellus. Series A, Dynamic meteorology and oceanography Dynamic meteorology and oceanography, 2002-01, Vol.54 (1), p.99-106 |
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| container_title | Tellus. Series A, Dynamic meteorology and oceanography |
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| creator | NYCANDER, JONAS DÖÖS, KRISTOFER COWARD, ANDREW C. |
| description | Methods from chaos theory are applied to the analysis of the circulation in the Southern Ocean, using velocity fields produced by a realistic global ocean model. We plot the intersections of individual trajectories encircling Antarctica with a vertical plane in the Drake passage. This so‐called Poincaré section shows a drastic difference between regular trajectories in a core region of the Antarctic Circumpolar Current (ACC), and chaotic, mixing trajectories in the surrounding region. It also shows that there is a region with overturning circulation of approximately 3.5 Sv in the ACC, with downwelling on the northern side and upwelling on the southern side, which may be related to the Deacon cell. |
| doi_str_mv | 10.1034/j.1600-0870.2002.00020.x |
| format | Article |
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| source | Taylor & Francis Open Access; Wiley Online Library Journals Frontfile Complete; Co-Action Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Earth, ocean, space Exact sciences and technology External geophysics Marine Physics of the oceans Thermohaline structure and circulation. Turbulence and diffusion |
| title | Chaotic and regular trajectories in the Antarctic Circumpolar Current |
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