snvecR
Calculate Earth’s Obliquity and Precession in the Past
Richard E. Zeebe, Ilja J Kocken
Last update: 26 January 2024
Copyright license: GNU General Public License
Software version identifier: 3.7.5, 3.7.6, 3.7.7, 3.8.0
Easily calculate precession and obliquity from an orbital solution (defaults to ZB18a from Zeebe and Lourens (2019) <doi:10.1126/science.aax0612>) and assumed or reconstructed values for tidal dissipation (Td) and dynamical ellipticity (Ed). This is a translation and adaptation of the C-code in the supplementary material to Zeebe and Lourens (2022) <doi:10.1029/2021PA004349>, with further details on the methodology described in Zeebe (2022) <doi:10.3847/1538-3881/ac80f8>. The name of the C-routine is snvec, which refers to the key units of computation: spin vector s and orbit normal vector n.
- Solar System chaos and the Paleocene–Eocene boundary age constrained by geology and astronomy
- A Deep‐Time Dating Tool for Paleo‐Applications Utilizing Obliquity and Precession Cycles: The Role of Dynamical Ellipticity and Tidal Dissipation
- Reduced Variations in Earth’s and Mars’ Orbital Inclination and Earth’s Obliquity from 58 to 48 Myr ago due to Solar System Chaos
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