Table 1 Parameters of the Earth used for the determination of Antarctic polar motion excitation functions. Sources: (a) Petit and Luzum (2010), (b) Wilson and Vicente (1990), (c) Göttl (2013), (d) Seitz et al. (2012), (e) Mathews et al. (1991)
Parameter | Name | Value | Source |
|---|---|---|---|
a | Earth’s equatorial radius | 6378136.3 m | (a) |
GM | Gravimetric gravitational constant | \(3986004418\cdot 10^{14}\) m3s-2 | (b) |
\(\Omega\) | Earth’s mean angular velocity | \(7.292115\cdot 10^{-5}\) rad s-1 | (b) |
A | Equatorial moment of inertia of the Earth | \(8.0095\cdot 10^{37}\) kg m2 | (c) |
B | Equatorial moment of inertia of the Earth | \(8.0097\cdot 10^{37}\) kg m2 | (c) |
C | Axial moment of inertia of the Earth | \(8.0359\cdot 10^{37}\) kg m2 | (c) |
G | Gravitational constant | \(6.674\cdot 10^{-11}\) m3kg-1s-2 | (b) |
\(k'_2\) | Degree 2 load Love number | \(-0.308\) | (a) |
T | Chandler period | 432.98 d | (d) |
\(A_c\) | Equatorial moment of inertia of the Earth’s core | \(9.1168\cdot 10^{36}\) kg m2 | (e) |
\(\epsilon _c\) | Ellipticity of the Earth’s core | \(2.546\cdot 10^{-3}\) | (e) |