Rapid Variations of Earth’s Core Magnetic Field - INSU - Institut national des sciences de l'Univers Access content directly
Journal Articles Surveys in Geophysics Year : 2022

Rapid Variations of Earth’s Core Magnetic Field

V. Lesur
N. Gillet
M. Hammer
  • Function : Author


Abstract Evidence of fast variations in the Earth’s core field are seen both in magnetic observatory and satellite records. We present here how they have been identified at the Earth’s surface from ground-based observatory records and how their spatio-temporal structure is now characterised by satellite data. It is shown how their properties at the core mantle boundary are extracted through localised and global modelling processes, paying particular attention to their time scales. Finally are listed possible types of waves in the liquid outer core, together with their main properties, that may give rise to these observed fast variations.
Fichier principal
Vignette du fichier
Lesur2022_Article_RapidVariationsOfEarthSCoreMag.pdf (4.64 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

insu-03525969 , version 1 (14-01-2022)





V. Lesur, N. Gillet, M. Hammer, M. Mandea. Rapid Variations of Earth’s Core Magnetic Field. Surveys in Geophysics, 2022, ⟨10.1007/s10712-021-09662-4⟩. ⟨insu-03525969⟩
54 View
42 Download



Gmail Facebook X LinkedIn More