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De Santis 1992
De Santis, A. (1992). Conventional spherical harmonic analysis for regional modelling of the geomagnetic field. Geophysical Research Letters 19: doi: 10.1029/92GL01068. issn: 0094-8276.

Spherical Harmonic Analysis (SHA) is normally used to model the three-dimensional global geomagnetic field. To address the same problem in regional modelling, Haines (1985) proposed Spherical Cap Harmonic Analysis (SCHA). This regional technique involves the computation of more complex Legendre functions with real (generally non-integer) harmonic degree. Here a new more practical technique is described; it is called Adjusted Spherical Harmonic Analysis (ASHA) because it is based on the expansion of conventional spherical harmonics after the colatitude interval is adjusted to that of a hemisphere. This kind of analysis can also be applied to modelling general two-dimensional functions. ¿ American Geophysical Union 1992

BACKGROUND DATA FILES

Abstract

Keywords
Geomagnetism and Paleomagnetism, Spatial variations (all harmonics and anomalies), Geomagnetism and Paleomagnetism, General or miscellaneous
Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/
Publisher
American Geophysical Union
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