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Fourth International Symposium on Turbulence and Shear Flow Phenomena
June, 27-29, 2005, Marriot Hotel, Williamsburg, Virginia, USA

DOI: 10.1615/TSFP4

SUCCESSIVE BIFURCATIONS AND VARIABILITY OF WIND-DRIVEN OCEAN FLOWS

pages 373-382
DOI: 10.1615/TSFP4.630
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要約

An overview is provided of recent results on patterns of internal variability of the midlatitude wind-driven ocean circulation. This variability arises through successive instabilities of these flows. Bifurcation diagrams are presented for single-layer flows and physical mechanisms associated with some of the instabilities are briefly described. A homoclinic bifurcation is central for the low-frequency, aperiodic variability in these flows. The different flow regimes, as found in transient flow computations in both single- and multi-layer flows, can be interpreted with help of the bifurcation diagrams.

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