alodfromk: Compute Earth-Moon distance and length of day from precession frequency
Description
Compute Earth-Moon distance (a; Earth radii) and length of day (LOD; hours),
and their uncertainties, from precession frequency (k; arcsec/yr).
Usage
alodfromk(k,sdevk,genplot=TRUE,verbose=TRUE)
Arguments
k
precession frequency, arcsec/yr
sdevk
standard deviation of precession frequency, arcsec/yr
genplot
generate summary plots (T or F)
verbose
verbose output (T or F)
Details
Compute a (Earth radii), LOD (hrs) and their uncertainties for a given value
of k (arcsec/yr) and its uncertainty. Calculations are based on the original equations
of Walker et al. (1986), with adjusted constants Kconst and Aconst as in
Malinverno and Meyers (2024).
References
Walker, J.C.G., Zahnle, K.J., 1986,
Lunar nodal tide and distance to the Moon during the Precambrian: Nature 320, 600-602.
Malinverno, A. and Meyers, S.R., 2024,
Bayesian estimation of past astronomical frequencies, lunar distance, and length of day from sediment cycles: Geochemistry, Geophysics, Geosystems, 25, e2023GC011176.