Fig. 3.
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Velocity profiles (left panel) and spectra (right panel) for our drivers. The blue curve corresponds to the red noise signal with a power-law (∝f−1.66) spectrum, and the orange curve to the detrended signal with spectrum S ∝ f−1.66 for f ≳ 2 mHz and reduced power at the lower frequencies. The black dashed line shows the background trend for the original velocity signal.
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