Wavelet Analysis of the Geomagnetic Field Within Source Regions of Ionospheric and Magnetospheric Currents

  • A multiscale method is introduced using spherical (vector) wavelets for the computation of the earth's magnetic field within source regions of ionospheric and magnetospheric currents. The considerations are essentially based on two geomathematical keystones, namely (i) the Mie representation of solenoidal vector fields in terms of toroidal and poloidal parts and (ii) the Helmholtz decomposition of spherical (tangential) vector fields. Vector wavelets are shown to provide adequate tools for multiscale geomagnetic modelling in form of a multiresolution analysis, thereby completely circumventing the numerical obstacles caused by vector spherical harmonics. The applicability and efficiency of the multiresolution technique is tested with real satellite data.

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Metadaten
Author:Michael Bayer, Willi Freeden, Thorsten Maier
URN (permanent link):urn:nbn:de:hbz:386-kluedo-8157
Serie (Series number):Berichte der Arbeitsgruppe Technomathematik (AGTM Report) (217)
Document Type:Preprint
Language of publication:English
Year of Completion:1999
Year of Publication:1999
Publishing Institute:Technische Universität Kaiserslautern
Tag:Helmholtz decomposition ; Mie representation ; geomagnetic field modelling from MAGSAT data; multiresolution analysis ; vector wavelets
Faculties / Organisational entities:Fachbereich Mathematik
DDC-Cassification:510 Mathematik

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