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Automated detection of coherent Lagrangian vortices in two-dimensional unsteady flows (1404.3109v3)
Published 11 Apr 2014 in math.DS, cs.GR, physics.ao-ph, and physics.flu-dyn
Abstract: Coherent boundaries of Lagrangian vortices in fluid flows have recently been identified as closed orbits of line fields associated with the Cauchy-Green strain tensor. Here we develop a fully automated procedure for the detection of such closed orbits in large-scale velocity data sets. We illustrate the power of our method on ocean surface velocities derived from satellite altimetry.
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