snvecR: Calculate Earth’s Obliquity and Precession in the Past

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.

Package details

AuthorIlja Kocken [aut, cre, trl, cph] (<https://orcid.org/0000-0003-2196-8718>), Richard Zeebe [aut] (<https://orcid.org/0000-0003-0806-8387>)
MaintainerIlja Kocken <ikocken@hawaii.edu>
LicenseGPL (>= 3)
Version3.10.1
URL https://japhir.github.io/snvecR/ https://github.com/japhir/snvecR
Package repositoryView on CRAN
Installation Install the latest version of this package by entering the following in R:
install.packages("snvecR")

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snvecR documentation built on April 4, 2025, 12:12 a.m.