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Biological Impact of Ocean Transport: A Finite-Size Lyapunov Characterization

AuthorsHernández-García, Emilio ; Bettencourt, João H.; Garçon, Véronique; Hernández Carrasco, Ismael ; López, Cristóbal ; Rossi, Vincent ; Sudre, Joel; Tew Kai, Emilie
KeywordsLagrangian transport
Lyapunov exponents
Issue Date2012
AbstractThe Lagrangian description of fluid transport has been largely enriched with the introduction of stretching quantifiers such as the different types of Lyapunov exponents. Here we will focus on the finite-size Lyapunov exponent case, as applied to horizontal ocean flows estimated from satellite altimetry. The influence on biological organisms of the structures revealed by the Lyapunov analysis will be illustrated with examples from the bottom and from the top of marine ecosystems: the distribution of phytoplankton in ocean upwelling areas, and the trajectories of frigatebirds in the West Indian Ocean, which fly on top of the ridges of Lyapunov structures. The convenience of moving from a two-dimensional to a fully three-dimensional description is highlighted
DescriptionPreprint enviado al 3rd Conference on Nonlinear Science and Complexity, Ankara, July 2010 , Springer (2012)
Appears in Collections:(IFISC) Comunicaciones congresos
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