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Authors: De Santis, A.*
Chiappini, M.*
Dominici, G.*
Meloni, A.*
Title: Regional geomagnetic field modelling: the contribution of the Istituto Nazionale di Geofisica
Issue Date: Oct-1997
Series/Report no.: 40/5
Keywords: regional modelling
spherical cap harmonics
geomagnetic field
Abstract: Models of the geomagnetic field are mathematical expressions able to represent the Earth's magnetic field space and time variations. Time variations on the long term basis are represented by the so-called secular variation. This paper describes and reviews recent activities of the Italian group at the Istituto Nazionale di Geofisica in regional magnetic field modelling. The models are introduced starting from the classical technique of Spherical Harmonic Analysis (SHA) undertaken for the first time by Gauss, the polynomial analysis and the regional harmonic analysis, specifically introduced as a regional analogue of SHA. In this last group the recent techniques of Spherical Cap Harmonic Analysis (SCHA), Translated Origin Spherical Cap Analysis (TOSCA) and Adjusted Spherical Cap Harmonic Analysis (ASHA) are also described and discussed.
Appears in Collections:04.05.99. General or miscellaneous
Annals of Geophysics

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