Last data update: 2014.03.03
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R: Gravity on Earth
Gravity on Earth
Description
Computes the gravity, based on latitude.
Usage
gravity(lat = 0, method = c("Moritz", "UNESCO"))
Arguments
lat |
latitude (-90 - +90).
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method |
When "UNESCO", uses the UNESCO (1983) polynomial, else
according to Moritz, 2000
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Value
Gravity, in m/s2.
Author(s)
Karline Soetaert <karline.soetaert@nioz.nl>
References
The UNESCO polynomial:
Fofonoff NP and Millard RC Jr, 1983. Algorithms for computation of
fundamental properties of seawater. UNESCO technical papers in marine
science, 44, 53 pp.
http://unesdoc.unesco.org/images/0005/000598/059832EB.pdf
Moritz H, 2000. Geodetic reference system 1980. Journal of Geodesy 74,
128-133.
See Also
coriolis , viscosity ,
diffcoeff , ssd2rad , vertmean
Examples
gravity(lat = 30)
Results
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