On the derivation of the Earth's conductivity structure by means of spherical cap harmonic analysis

J. M. Torta, A. Da Santis

Producción científica: Artículo en revista indizadaArtículorevisión exhaustiva

15 Citas (Scopus)

Resumen

After Haines and Torta (1994) applied spherical cap harmonic analysis (SCHA) to deduce the formulation of equivalent currents in terms of spherical cap harmonic coefficients, it seemed appropriate to extend the same scheme that relates global spherical harmonics with the Earth's conductivity structure to regional modelling of geomagnetic-field variations. From the considerations made in this paper it seems difficult or even impossible to obtain either a conductivity - depth profile or a 3-D structure, from a regional analysis of global-scale phenomena such as the regular daily variation, by using the same formulations as employed in global analyses. There exist, in addition, some intrinsic limits of SCHA itself, which, can affect the derivation of a proper conductivity estimation.

Idioma originalInglés
Páginas (desde-hasta)441-451
Número de páginas11
PublicaciónGeophysical Journal International
Volumen127
N.º2
DOI
EstadoPublicada - 1996
Publicado de forma externa

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