Alberti, T. (2018) Multivariate Empirical Mode Decomposition analysis of Swarm data. Il nuovo cimento C, 41 (3). pp. 1-10. ISSN 1826-9885
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Abstract
The magnetosphere and the ionosphere of the Earth are populated by different current systems with well-structured spatial patterns. In this paper, by using low-resolution (1 Hz) Swarm A data, we present an application of the Multivariate Empirical Mode Decomposition (MEMD) to the external variations of the geomagnetic field, allowing us to identify magnetospheric and ionospheric current systems patterns. By using both quiet and disturbed periods, we show that MEMD is able to clearly discern between magnetospheric and ionospheric contributions, evidencing magnetospheric ring current pattern, field aligned currents, ionospheric Solar quiet (Sq) and equatorial electrojet (EEJ) currents, with well-defined spatial patterns, in addition to which we observe both short- and large-scale contributions.
| Item Type: | Article |
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| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 18 Nov 2020 08:57 |
| Last Modified: | 18 Nov 2020 08:57 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/20242 |
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