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Solid Earth An interactive open-access journal of the European Geosciences Union
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Volume 9, issue 2
Solid Earth, 9, 491–503, 2018
https://doi.org/10.5194/se-9-491-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Solid Earth, 9, 491–503, 2018
https://doi.org/10.5194/se-9-491-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 25 Apr 2018

Research article | 25 Apr 2018

Geomagnetic field declination: from decadal to centennial scales

Venera Dobrica et al.

Data sets

World Data Center of Geomagnetism, Edinburgh Natural Environment Research Council http://http://www.geomag.bgs.ac.uk/data_service/data/annual_means.shtml

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Short summary
By analyzing frequency constituents of declination secular variation at inter-decadal and sub-centennial timescales from geomagnetic observatories with data longer than 1 century and several historical data sets, we suggest that the geomagnetic jerk concept should be considered as a more general notion, namely the evolution of the secular variation as a result of the superposition of two (or more) constituents describing the effects of processes in the Earth’s core at two (or more) timescales.
By analyzing frequency constituents of declination secular variation at inter-decadal and...
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