Journal
JOURNAL OF FLUID MECHANICS
Volume 755, Issue -, Pages -Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/jfm.2014.441
Keywords
geophysical and astrophysical flows; geostrophic turbulence; ocean circulation
Categories
Funding
- NSF [CMG0825547]
- BP/Gulf of Mexico Research Initiative
- Directorate For Geosciences
- Division Of Ocean Sciences [0825547] Funding Source: National Science Foundation
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In Haller & Beron-Vera (J. Fluid Mech., vol. 731, 2013, R4) we developed a variational principle for the detection of coherent Lagrangian vortex boundaries. The solutions of this variational principle turn out to be closed null geodesics of the Lorentzian metric induced by a generalized Green-Lagrange strain tensor family. This metric interpretation implies a mathematical analogy between coherent Lagrangian vortex boundaries and photon spheres in general relativity. Here, we give an improved discussion of this analogy.
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