Multipole Analysis. II. Geomagnetic Secular Variation
RW James
Australian Journal of Physics
22(4) 481 - 496
Published: 1969
Abstract
The method of multipole analysis described in Part I is applied to the Earth's magnetic field for various epochs between 1845 and 1965, allowing the geomagnetic secular variation to be illustrated by time trends in the multipole parameters. The rates of change of the multipole parameters are used to separate the secular variation into non.drifting, meridional drifting, and longitudinal drifting components, which are discussed in detail for the epoch 1965.https://doi.org/10.1071/PH690481
© CSIRO 1969