Repeat-station surveys: implications from chaos and ergodicity of the recent geomagnetic field

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Angelo De Santis
Enkelejda Qamili
Gianfranco Cianchini

Abstract

The present geomagnetic field is chaotic and ergodic: chaotic because it can no longer be predicted beyond around 6 years; and ergodic in the sense that time averages correspond to phase-space averages. These properties have already been deduced from complex analyses of observatory time series in a reconstructed phase space and from global predicted and definitive models of differences in the time domain. These results imply that there is a strong necessity to make repeat-station magnetic surveys more frequently than every 5 years. This, in turn, will also improve the geomagnetic field secular variation models. This report provides practical examples and case studies.

 

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How to Cite
1.
De Santis A, Qamili E, Cianchini G. Repeat-station surveys: implications from chaos and ergodicity of the recent geomagnetic field. Ann. Geophys. [Internet]. 2013Apr.18 [cited 2022Aug.8];56(1):R0103. Available from: https://www.annalsofgeophysics.eu/index.php/annals/article/view/5491
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Research Articles

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