Articles | Volume 9, issue 2
Research article
25 Apr 2018
Research article |  | 25 Apr 2018

Geomagnetic field declination: from decadal to centennial scales

Venera Dobrica, Crisan Demetrescu, and Mioara Mandea

Data sets

World Data Center of Geomagnetism, Edinburgh Natural Environment Research Council http://

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.