Articles | Volume 8, issue 2
https://doi.org/10.5194/gchron-8-351-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gchron-8-351-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
10 Jun 2026
Research article |
| 10 Jun 2026
| 10 Jun 2026
Atmospheric 10Be from Talos Dome (East Antarctic) ice core records geomagnetic dipole intensity from 170 to 270 ka BP
Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE, Aix-en-Provence, France
now at: International Center for Isotope Effects Research (ICIER), State Key Laboratory of Critical Earth Material Cycling and Mineral Deposits, Nanjing University, Nanjing 210023, China
now at: Frontiers Science Center for Critical Earth Material Cycling, School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China
Edouard Bard
Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE, Aix-en-Provence, France
Nicolas Thouveny
Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE, Aix-en-Provence, France
Ellyn Auriol
Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE, Aix-en-Provence, France
Mirko Severi
Department of Chemistry “Ugo Schiff”, University of Florence, Florence, Italy
Rita Traversi
Department of Chemistry “Ugo Schiff”, University of Florence, Florence, Italy
Martine De Angelis
Univ. Grenoble Alpes, CNRS, IRD, INRAE, Grenoble INP, IGE, 38000 Grenoble, France
Frank Wilhelms
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar-und Meeresforschung, Bremerhaven, Germany
Geowissenschaftliches Zentrum, Abteilung Isotopengeologie, Georg-August-Universität, Goldschmidtstraße 1, 37073 Göttingen
Robert Mulvaney
British Antarctic Survey, Cambridge, UK
Fawzi Zaidi
Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE, Aix-en-Provence, France
Georges Aumaitre
Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE, Aix-en-Provence, France
Karim Keddadouche
Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE, Aix-en-Provence, France
Mélanie Baroni
Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE, Aix-en-Provence, France
Data sets
TALDICE 10Be and major ions 1470-1531 m Alexis Lamothe et al. https://doi.org/10.5281/zenodo.17433639
Short summary
We studied changes in Earth's magnetic field between 170 000 and 270 000 years ago using beryllium data from Antarctic ice. Our results reveal three periods when the magnetic field weakened, including one major event with a rapid fall and gradual recovery. These findings help explain how Earth's magnetic field behaves during short-term disturbances and improve the timing of past climate and geological records.
We studied changes in Earth's magnetic field between 170 000 and 270 000 years ago using...
