An improvement for calculating the correlation between the geomagnetic and the Earth's gravitational fields

Details An improvement for calculating the correlation between the geomagnetic and the Earth's gravitational fields An improvement for calculating the correlation between the geomagnetic and the Earth's gravitational fields

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986pepi...44..319w&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 44, Issue 4, p. 319-323.

Physics

Scientific paper

There is a correlation between the geomagnetic and the Earth's gravitational fields to a certain degree. We should consider the zeral harmonic terms to calculate the correlation function. Correlation between the geomagnetic non-dipole field of epoch 1980, which was moved eastwards 165; and the departure part of the Earth's gravitational field from the hydrostatic equilibrium, yields a value of 0.6278. It is significant at the 0.01 level. Calculating the correlations of different epochs, we find that the westward drifting velocity of the geomagnetic non-dipole field is 0.3° year-1. It is not necessary to calculate the correlations between any individual harmonic term from either field.

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