Publication Date:
2017-04-04
Description:
The spatial power spectrum of the scalar potential (V) of the main geomagnetic field
shows a power-law behaviour at the core-mantle boundary (CMB) and an almost uniform distribution of the corresponding phases. This is strong evidence for a fractal topography of V having a non-integer
dimension of 2.2 (with an uncertainty of ±0.1) which is, indeed, found from an analysis of the power spectra of 32 spherical harmonic models of V spanning the interval 1647 to 1990.
Description:
Published
Description:
747-759
Description:
JCR Journal
Description:
reserved
Keywords:
Geomagnetism
;
spatial power spectra
;
fractals
;
04. Solid Earth::04.01. Earth Interior::04.01.03. Mantle and Core dynamics
;
04. Solid Earth::04.05. Geomagnetism::04.05.02. Geomagnetic field variations and reversals
;
04. Solid Earth::04.05. Geomagnetism::04.05.05. Main geomagnetic field
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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