Publication Date:
2017-04-04
Description:
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.
Description:
Published
Description:
131-148
Description:
3.4. Geomagnetismo
Description:
N/A or not JCR
Description:
open
Keywords:
Geomagnetic Jerks
;
Spectral Analysis
;
Geomagnetic field time series
;
04. Solid Earth::04.05. Geomagnetism::04.05.02. Geomagnetic field variations and reversals
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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