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.
KeywordsTidal deformation Tidal dissipation Tidal locking Tidal potential Tides
References and Further Reading
- Hubbard WB (1984) Planetary interiors. Van Nostrand, New York, p 334Google Scholar
- Peale SJ, Canup RM (2015) The origin of the natural satellites. In: Spohn T, Schubert G (eds) Treatise on geophysics 2nd ed, vol 10. Elsevier, Amsterdam, pp 559–604Google Scholar
- Spohn T (1997) Tides of Io. In: Wilhelm H, Zürn W, Wenzel HG (eds) Lecture notes in earth sciences, vol 66. Springer, Heidelberg, pp 345–377Google Scholar
- Zschau J (1978) Tidal friction in the solid Earth: loading tides versus body tides. In: Brosche P, Sündermann J (eds) Tidal friction and the Earth’s rotation. Springer, Berlin, pp 62–94Google Scholar