Table 1
Values of physical parameters used in simulations.
| Parameters | Earth | Venus | |
|
|
|||
| R [km] | 6371.0 | 6051.8 | |
| g [m s-2] | 9.81 | 8.87 | |
| H [km] | 8.5 | 15.9 | |
| M [g mol-1] | 28.965 | 43.45 | |
| Γ1 | 1.4 | 1.4 | |
| σ 0 [10-7 s-1] | 7.5 | 7.5 | |
[105 Pa]
|
1.0 | 93 | |
| Ω [10-7 s-1] | 729.21 | − 2.9927 | |
| n orb [10-7 s-1] | 1.9910 | 3.2364 | |
| U 2 [m2 s-2] | − 0.985 | − 2.349 | |
| J 2 [W kg-1] | 10-2 | 10-4 | |
Notes. Most of the parameters are given by NASA fact sheets9 and IMCCE databases. For both planets, the radiation frequency is arbitrarily fixed at σ0 = 7.5 × 10-7 s-1, which is the effective Newtonian cooling frequency obtained by Leconte et al. (2015) for Venus. This order of magnitude can be computed using Eq. (17). The quadrupolar tidal potentials are computed from the expression of the gravitational potential given by Mathis & Le Poncin-Lafitte (2009); see Appendix C.
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