260 citations · 1.3k across the 24 of their papers we have counts for
6 papers · 1 filter
Contributions to the geomagnetic secular variation from a reanalysis of core surface dynamics
Olivier Barrois, Nicolas Gillet, Julien Aubert
We invert for motions at the surface of Earth's core under spatial and temporal constraints that depart from the mathematical smoothings usually employed to ensure spectral converg…
Rapid Variations of Earth's Core Magnetic Field
V. Lesur, N. Gillet, M. D. Hammer +1
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 surf…
The interplay of fast waves and slow convection in geodynamo simulations nearing Earth's core conditions
Julien Aubert, Nicolas Gillet
Ground observatory and satellite-based determinations of temporal variations in the geomagnetic field probe a decadal to annual time scale range where Earth's core slow, inertiales…
Spatial And Temporal Changes Of The Geomagnetic Field: Insights From Forward And Inverse Core Field Models
Nicolas Gillet
Observational constraints on geomagnetic field changes from interannual to millenial periods are reviewed, and the current resolution of field models (covering archeological to sat…
Planetary gyre, time-dependent eddies, torsional waves, and equatorial jets at the Earth's core surface
N Gillet, D Jault, C. C. Finlay
We report a calculation of time-dependent quasi-geostrophic core flows for 1940-2010. Inverting recursively for an ensemble of solutions, we evaluate the main source of uncertainti…
Stochastic modelling of regional archaeomagnetic series
G. Hellio, N. Gillet, C. Bouligand +1
SUMMARY We report a new method to infer continuous time series of the declination, inclination and intensity of the magnetic field from archeomagnetic data. Adopting a Bayesian per…