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Fig. 4.
Test case in 2D, following H84, for χ = 1.5 with μ = 0, K = 1.4 × 10−2, and a Rayleigh number of 1.24 × 105. The flow alters between long zonal-flow phases (panel a) and intermittent, convective burst phases (panel b). Absolute velocity is color coded, velocity arrows are overplotted in gray shadings.
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