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Authors: De Santis, A.*
Tozzi, R.*
Gaya-Piqué, L.*
Title: Information content and K-entropy of the present geomagnetic field
Title of journal: Earth and Planetary Science Letters
Series/Report no.: 218 (2004)
Publisher: Elsevier
Issue Date: 2004
DOI: 10.1016/S0012-821X(03)00681-2
Keywords: information theory
Kolmogorov entropy
geomagnetic field
geomagnetic reversals
Abstract: Concepts of information theory are applied to global models of the geomagnetic field B of the last century. The temporal behavior of information content suggests that B is in a chaotic state with characteristic times close to those of its westward drift and of the convective overturn in the outer core and the secular variation shows a comparable characteristic time of predictability. The main implication of these results is the suggestive hypothesis that a possible geomagnetic reversal or excursion is currently in progress.
Appears in Collections:Papers Published / Papers in press
04.05.02. Geomagnetic field variations and reversals

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