Abstract
Recent studies appeared in literature on the chaotic behavior of the dynamical system producing the geomagnetic field, i.e. the geodynamo. They analyzed the secular variation as deduced from observatories annual means (Barraclough and De Santis, 1997; De Santis et al., 2002), as well as the information content of global models for the last century (De Santis et al., 2004), showing some interesting nonlinear properties. Suitable nonlinear techniques can be applied for short term prediction of the geomagnetic field, i.e. to extrapolate the field 1-2 years into the future. Using these methods it is possible to update geomagnetic field maps for navigational purposes and to improve the prediction in heliports and airports of the magnetic declination which is important for the safety and security of all operations related to landing and take-off.
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Keywords
- Prediction Interval
- Secular Variation
- Large Lyapunov Exponent
- Short Term Prediction
- International Geomagnetic Reference Field
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References
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DE SANTIS, A., TOZZI, R. (2006). NONLINEAR TECHNIQUES FOR SHORT TERM PREDICTION OF THE GEOMAGNETIC FIELD AND ITS SECULAR VARIATION. In: Rasson, J.L., Delipetrov, T. (eds) Geomagnetics for Aeronautical Safety. NATO Security through Science Series. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-5025-1_22
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DOI: https://doi.org/10.1007/978-1-4020-5025-1_22
Publisher Name: Springer, Dordrecht
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Online ISBN: 978-1-4020-5025-1
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