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| Titel |
Geomagnetic jerks characterization via spectral analysis |
| VerfasserIn |
B. Duka, A. Santis, M. Mandea, A. Isac, E. Qamili |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1869-9510
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| Digitales Dokument |
URL |
| Erschienen |
In: Solid Earth ; 3, no. 1 ; Nr. 3, no. 1 (2012-05-09), S.131-148 |
| Datensatznummer |
250000842
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| Publikation (Nr.) |
 copernicus.org/se-3-131-2012.pdf |
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| Zusammenfassung |
| In this study we have applied spectral techniques to analyze geomagnetic
field time-series provided by observatories, and compared the results with
those obtained from analogous analyses of synthetic data estimated from
models. Then, an algorithm is here proposed to detect the geomagnetic jerks
in time-series, mainly occurring in the eastern component of the geomagnetic
field. Applying such analysis to time-series generated from global models
has allowed us to depict the most important space-time features of the
geomagnetic jerks all over the globe, since the beginning of XXth
century. Finally, the spherical harmonic power spectrum of the third
derivative of the main geomagnetic field has been computed from 1960 to
2002.5, bringing new insights to understand the spatial evolution of these
rapid changes of the geomagnetic field. |
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