Brief Description:
This data set contains the 195 coefficients of the MGST (6/80) spherical
harmonics model of the Earth's main (core) magnetic field. The coefficients are
for epoch 1979.85 and extend to degree and order 13. No secular variation terms
are included. This model was one of the first published results of the MAGSAT
satellite mission. It is based on initial vector measurements for the
magnetically quiet days of November 5-6, 1979. The authors included also
statistically significant external terms of degree and order 1 describing the
effect of external field sources.
Availability: (1) Retrievable from CCMC's anonymous FTP site.
References:
R. A. Langel, Initial Geomagnetic Field Model from MAGSAT, NASA TM-80679,
Washington, D.C., 1980.
R. A. Langel, R. H. Estes, G. D. Mead, E. B. Fabiano, and E. R. Lancaster, Initial Geomagnetic Field Model from MAGSAT Vector Data, Geophys. Res. Lett. 7, 793, 1980.