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Fig. 7


Tidal torque associated with the Lunar quadrupolar oceanic tide. The logarithm of is plotted asa function of the orbital (horizontal axis) and rotation (vertical axis) periods in logarithmic scale by using Eq. (72) for σR = 10−6 s−1 (bottom) and σR = 10−5 s−1 (top), and various values of H and N. Horizontally, H = 10 km (left), H = 100 km (middle) and H = 1000 km (right). Vertically, N = 10−4 s−1 (bottom) and N = 10−3 s−1 (top). Colours correspond to logarithmic decades (colour-bars on the right). The diagonal black dashed line corresponds to spin-orbit synchronization.

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