Russian Journal of Earth Sciences Russian Journal of Earth Sciences Russian Journal of Earth Sciences 1681-1208 46929 ОРИГИНАЛЬНЫЕ СТАТЬИ ORIGINAL ARTICLES ОРИГИНАЛЬНЫЕ СТАТЬИ Geomagnetic field evolution. Changes on the way? Geomagnetic field evolution. Changes on the way? Mandea Mioara Mandea Mioara Lesur Vincent Lesur Vincent Universite Paris Diderot - Institut de Physique du Globe de Paris Geophysique spatiale et planetaire, Paris, France ru Universite Paris Diderot - Institut de Physique du Globe de Paris Geophysique spatiale et planetaire, Paris, France ru Helmholtz-Zentrum Potsdam Deutsches GeoForschungsZentrum - GFZ Sektion, Potsdam, Germany ru Helmholtz-Zentrum Potsdam Deutsches GeoForschungsZentrum - GFZ Sektion, Potsdam, Germany ru 11 3 1 8 10 11 2021 https://rjes.ru/en/nauka/article/46929/view

High-quality observations have been obtained from a number of magnetic satellites, complementing the ground available data for the last decade. We present here the issues regarding observatory and satellite data, in order to show how these modern measurements have brought new insights in understanding the Earth's magnetic field. It is only when combined with ground-based data that satellite measurements can provide additional opportunities for studies ranging from core flow, mantle conductivity and lithospheric composition to the dynamics of the ionospheric and magnetospheric currents. Therefore, in this paper a case is presented for the necessity of continuous monitoring of geomagnetic field from ground and space. This contribution is mainly based on some recent work and publications we are co-authoring.

High-quality observations have been obtained from a number of magnetic satellites, complementing the ground available data for the last decade. We present here the issues regarding observatory and satellite data, in order to show how these modern measurements have brought new insights in understanding the Earth's magnetic field. It is only when combined with ground-based data that satellite measurements can provide additional opportunities for studies ranging from core flow, mantle conductivity and lithospheric composition to the dynamics of the ionospheric and magnetospheric currents. Therefore, in this paper a case is presented for the necessity of continuous monitoring of geomagnetic field from ground and space. This contribution is mainly based on some recent work and publications we are co-authoring.

 Geomagnetic field secular variation secular acceleration satellite measurements Geomagnetic field secular variation secular acceleration satellite measurements

Friis-Christensen, ESA Special Publication, v. 12796, 2004. Friis-Christensen, ESA Special Publication, v. 12796, 2004. Lesur, Geophys. J. Int., v. 173, no. 2, 2008., doi: 10.1111/j.1365-246X.2008.03724.x Lesur, Geophys. J. Int., v. 173, no. 2, 2008., doi: 10.1111/j.1365-246X.2008.03724.x Mandea, Surveys in Geophysics, v. 26, 2005., doi: 10.1007/s10712-005-3857-x Mandea, Surveys in Geophysics, v. 26, 2005., doi: 10.1007/s10712-005-3857-x Mandea, The Changing Faces of the Earth's Magnetic Field, 2007. Mandea, The Changing Faces of the Earth's Magnetic Field, 2007. Maus, Geochem., Geophys., Geosyst. G3, v. 9, 2008., doi: 10.1029/2008GC001949 Maus, Geochem., Geophys., Geosyst. G3, v. 9, 2008., doi: 10.1029/2008GC001949 Olsen, Nature Geosciences, v. 1, 2008., doi: 10.1038/ngeo203 Olsen, Nature Geosciences, v. 1, 2008., doi: 10.1038/ngeo203 Olsen, Geophys. J. Int., v. 179, no. 3, 2009., doi: 10.1111/j.1365-246X.2009.04386.x Olsen, Geophys. J. Int., v. 179, no. 3, 2009., doi: 10.1111/j.1365-246X.2009.04386.x Wessel, EOS Trans. AGU, v. 79, 1998. Wessel, EOS Trans. AGU, v. 79, 1998.