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Discussion papers
https://doi.org/10.5194/sed-3-615-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/sed-3-615-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 12 Jul 2011

Research article | 12 Jul 2011

Review status
This discussion paper is a preprint. It has been under review for the journal Solid Earth (SE). The manuscript was not accepted for further review after discussion.

Using spectral analysis to detect singular events such as jerks in the geomagnetic field time series

B. Duka1, A. De Santis2,3, M. Mandea4,5, A. Isac6, and E. Qamili2 B. Duka et al.
  • 1Faculty of Natural Sciences, University of Tirana, Tirana, Albania
  • 2Istituto Nazionale di Geofisica e Vulcanologia, Roma, Italy
  • 3Universita' G. D'Annunzio, Chieti, Italy
  • 4Institut de Physique du Globe de Paris, Université Paris Diderot, Paris, France
  • 5European Center for the Arctic, Université de Versailles, Guyancourt, France
  • 6Geological Institute of Romania, Bucharest, Romania

Abstract. In this study we have applied two spectral techniques in terms of Fourier and wavelet analysis to geomagnetic field time series and compared the results with those obtained from analogous analyses to synthetic data. Then, an algorithm has been proposed to detect the geomagnetic jerks in time series, mainly being considered by the Eastern component secular variation. 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 on global scale, since the beginning of XXth century. Finally, a spherical harmonic analysis of the secular acceleration power spectrum has been computed since 1960 to 2000, bringing new insights in understanding these rapid changes of the geomagnetic field and their origin.

B. Duka et al.
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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Interactive discussion
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
B. Duka et al.
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