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Tidal acceleration - Wikipedia, the free encyclopedia
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One way, caused by tidal friction, produces an extremely slow secular change in rotation. The other way, caused by the continual movements of the tides about the planet, produces very small but very rapid changes in rotation.
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Tidal friction, mathematical modelling techniques of ocean tides ... Understanding tidal friction: A history of science in a nutshell ... For a long time, two separate lines of thought governed our perceptions of tidal friction.
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Tidal Friction. Tides stretch the oceans, and to a small extent, the solid mass of a planet or satellite. In one complete rotation, the planet material ...
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As the Earth rotates, any piece of the Earth passes "through" the tidal bulges twice a day -- two tides a day. Think: ... Does the moon feel a tidal stretching? does it have tides? ... The Sun also exerts a tidal stretching on the Earth (but less than the Moon does -- why?).
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At present time the input of the tidal friction into Earth energetic balance is 1020 Nm/y (y=year). For a comparison the solar energy input is 1025 Nm/y, the heat flow loss, the tectonic activity and the energy released by earthquakes are 1022 Nm/y, 1020 Nm/y and 1018 Nm/y respectively.
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The Moon is also pulling back on the tidal bulge of the Earth, slowing the Earth's rotation. Tidal friction, caused by the movement of the tidal bulge around the Earth, takes energy out of the Earth and puts it into the Moon's orbit, making the Moon's orbit bigger (but, a bit pardoxically, the Moon actually moves slower!).
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Tidal Friction and Precession ... 3. The heating of the earth and the moon by tidal friction is negligible. Tidal friction heat, however, can be an important heat source in some of the moons of the gas giants, sufficient to produce volcanism...
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Using a three-dimensional viscoelastic numerical model simulating the response of Enceladus to tidal forcing, we explore the effect of a low-viscosity anomaly in the ice shell, localized to the south polar region, ... Solid tidal friction above a liquid water reservoir as the origin of the south pole hotspot on Enceladus...
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