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| Titel |
Seasonal variability of the subpolar gyres in the Southern Ocean: a numerical investigation based on transfer operators |
| VerfasserIn |
M. Dellnitz, G. Froyland, C. Horenkamp, K. Padberg-Gehle, A. Sen Gupta |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 16, no. 6 ; Nr. 16, no. 6 (2009-12-08), S.655-663 |
| Datensatznummer |
250013308
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| Publikation (Nr.) |
 copernicus.org/npg-16-655-2009.pdf |
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| Zusammenfassung |
| The detection of regions in the ocean that are coherent over an extended
period of time is a fundamental problem in many oceanic applications. For
instance such regions are important for studying the transport of marine
species and for the distribution of nutrients. In this study we demonstrate
the efficacy of transfer operators in detecting and analysing such
structures. We focus first on the detection of the Weddell and Ross Gyre for
the four seasons spanning December 2003–November 2004 within the 3-D oceanic
domain south of 30° S, and show distinct seasonal differences in both
the three-dimensional structure and the persistence of the gyres. Further, we
demonstrate a new technique based on the discretised transfer operators to
calculate the mean residence time of water within parts of the gyres and
determine pathways of water leaving and entering the gyres. |
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