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SIAMREV
2016

Geodesic Transport Barriers in Jupiter's Atmosphere: A Video-Based Analysis

4 years 3 months ago
Geodesic Transport Barriers in Jupiter's Atmosphere: A Video-Based Analysis
Jupiter’s zonal jets and Great Red Spot are well known from still images. However, the planet’s atmosphere is highly unsteady, which suggests that the actual material transport barriers delineating its main features should be time-dependent. Rare video footage of Jupiter’s clouds provides an opportunity to verify this expectation from optically reconstructed velocity fields. Available videos, however, provide short-time and temporally aperiodic velocity fields that defy classical dynamical systems analyses focused on asymptotic features. To this end, we use here the recent theory of geodesic transport barriers to uncover finite-time mixing barriers in the wind field extracted from a video captured by NASA’s Cassini space mission. More broadly, the approach described here provides a systematic and frame-invariant way to extract dynamic coherent structures from time-resolved remote observations of unsteady continua. Key words. Lagrangian coherent structures, Jupiter’s atmos...
Alireza Hadjighasem, George Haller
Added 09 Apr 2016
Updated 09 Apr 2016
Type Journal
Year 2016
Where SIAMREV
Authors Alireza Hadjighasem, George Haller
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