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Tidal friction in satellites and planets. The new version of the creep tide theory
- Publication Year :
- 2020
- Publisher :
- arXiv, 2020.
-
Abstract
- Paper on the creep tide theory and its applications to satellites and planets with emphasis on a new set of differential equations allowing easier numerical studies. The creep tide theory is a new paradigm that does not fix a priori the tidal deformation of the body, but considers the deformation as a low-Reynolds-number flow. The evolution under tidal forces is ruled by an approximate solution of the Navier-Stokes equation depending on the body's viscosity with no ad hoc assumptions on its shape and orientation. It reproduces closely the results of Darwinian theories in the case of gaseous planets and stars, but the results are completely different in the case of stiff satellites and planets. It explains the tidal dissipations of Enceladus and Mimas. The extension of the theory to nonhomogeneous icy satellites with a subsurface ocean allows the amplitude of the forced oscillations around synchronization (librations) to be better determined.<br />Comment: 27 pages, 8 figures
- Subjects :
- Earth and Planetary Astrophysics (astro-ph.EP)
010504 meteorology & atmospheric sciences
Deformation (mechanics)
Differential equation
Gas giant
General Physics and Astronomy
FOS: Physical sciences
Mechanics
01 natural sciences
Physics::Geophysics
Amplitude
Planet
0103 physical sciences
Tidal force
General Materials Science
Astrophysics::Earth and Planetary Astrophysics
Physical and Theoretical Chemistry
Enceladus
Tidal acceleration
010303 astronomy & astrophysics
Geology
Astrophysics - Earth and Planetary Astrophysics
0105 earth and related environmental sciences
Subjects
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....19dd98b697f8f489adc673636ede8015
- Full Text :
- https://doi.org/10.48550/arxiv.2004.01109