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An eddy tracking algorithm based on dynamical systems theory

AuthorsConti, Daniel ; Orfila, Alejandro ; Mason, Evan ; Sayol, Juan Manuel ; Simarro, Gonzalo ; Balle, Salvador
KeywordsCoherent structures
Global ocean
Mesoscale eddies
Dynamical systems theory
Stability analysis of fixed points
Tracking algorithm
Issue DateNov-2016
CitationOcean Dynamics 66(11): 1415-1427 (2016)
AbstractThis work introduces a new method for ocean eddy detection that applies concepts from stationary dynamical systems theory. The method is composed of three steps: first, the centers of eddies are obtained from fixed points and their linear stability analysis; second, the size of the eddies is estimated from the vorticity between the eddy center and its neighboring fixed points, and, third, a tracking algorithm connects the different time frames. The tracking algorithm has been designed to avoid mismatching connections between eddies at different frames. Eddies are detected for the period between 1992 and 2012 using geostrophic velocities derived from AVISO altimetry and a new database is provided for the global ocean
Description13 pages, 13 figures, 3 tables, 1 appendix
Publisher version (URL)https://dx.doi.org/10.1007/s10236-016-0990-7
Identifiersdoi: 10.1007/s10236-016-0990-7
issn: 1616-7341
e-issn: 1616-7228
Appears in Collections:(IMEDEA) Artículos
(ICM) Artículos
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