Definition
Tides are deformations of a planet or natural satellite caused by periodic variations of the local gravity acceleration as the planet or satellite rotates and revolves in the gravity field of a (disturbing) body. Tidal disturbances of a planet are primarily caused by the Sun and by the planet’s satellites. The planet will – in turn – also tidally disturb the satellites. On the Earth, tides are caused by the Sun and the Moon. Marine tides – the tidal deformation of the surface of the oceans – are most obvious and well known. In addition, there are atmospheric pressure variations caused by tidal accelerations and tidal deformations of the solid planet. Dissipation of tidal deformation energy can be a substantial heat source for planets and satellites and can cause changes in the rotation and orbital parameters.
Overview
The equilibrium surface of a planet depends on the distribution of mass in its interior (interior structure) and its rotation rate. The gravitational and...
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References and Further Reading
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Spohn, T., Walterová, M. (2022). Tides, Planetary. In: Gargaud, M., et al. Encyclopedia of Astrobiology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-27833-4_1592-3
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DOI: https://doi.org/10.1007/978-3-642-27833-4_1592-3
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Tides, Planetary- Published:
- 15 March 2023
DOI: https://doi.org/10.1007/978-3-642-27833-4_1592-3
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Tides, Planetary- Published:
- 06 May 2015
DOI: https://doi.org/10.1007/978-3-642-27833-4_1592-2