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Complex environmental -plane turbulence: laboratory experiments with altimetric imaging velocimetry

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Figure 1. Sketch of the experimental set-upflow at the beginning of the experiments with the thermal (a) and view of the (b) andsaline (c) forcing: (1) cylindrical tank filled with water and installedon a table rotating with angular velocity �; (2) light box for theoptical thickness measurements; (3) video camera; (4) light sourcewith colour mask; and (5) heating wire on the bottom.
Figure 2. Typical images from video sequences recorded in the ex-periments with thermal (a) and saline (b) forcing
Figure 3. Flows generated by thermal forcing at t = 280 s (a, b) and by saline forcing at t = 150 s (c, d)
Figure 4. Energy spectra in the wavenumber space (kx, ky) forthe experiments with thermal (a, b) and saline (c, d) forcing:t = 30 s (a), 630 s (b) from the beginning of the thermal experi-ment; t = 10 s (c), 722 s (d) after the fresh water source stoppedin

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