tidal force

(redirected from Tidal gravity)
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Related to Tidal gravity: tidal force, Tidal Friction, differential force

tidal force

A force arising in a system of one or more bodies as a result of differential gravitation: different parts of the system experience different accelerations. This can result in the production of tides and in general terms elongates a body in the direction of a nearby massive body, producing a tidal bulge. The force can alter a body's rotation rate until it is equal to the revolution period: this is true of most natural satellites of the planets, including the Moon, and is the case in some close binary stars, e.g. RS Canum Venaticorum stars. Tidal forces can lead to tidal heating of the interior of a body, and in extreme cases can lead to the disruption of a body.
References in periodicals archive ?
Tidal gravity anomalies as a tool to measure rheological properties of the continental lithosphere: Application to the South American Plate, Journal of South American Earth Sciences, 14,1-14.
Faller, Absolute gravimetry: Environmental noise limits, presented at Proceedings of the Workshop on Non Tidal Gravity Changes: Intercomparison between absolute and superconducting gravimeters, Walferdange, Luxemburg (1991) pp.
The typical tidal gravity signal due to ocean loading and attraction is usually between 1% and 10% of the total observed signal (Baker 1998) and the tilt loading can be larger than the body tide tilt, especially at stations very close to the coast (Pagiatakis 1990).