275 citations · 877 across the 12 of their papers we have counts for
12 papers
Fast Quasi-Geostrophic Magneto-Coriolis Modes in the Earth's core
Felix Gerick, Dominique Jault, Jerome Noir
Fast changes of Earth's magnetic field could be explained by inviscid and diffusion-less quasi-geostrophic (QG) Magneto-Coriolis modes. We present a hybrid QG model with columnar f…
Pressure torque of torsional Alfvén modes acting on an ellipsoidal mantle
F. Gerick, D. Jault, J. Noir +1
We investigate the pressure torque between the fluid core and the solid mantle arising from magnetohydrodynamic modes in a rapidly rotating planetary core. A two-dimensional reduce…
Turbulent geodynamo simulations: a leap towards Earth's core
Nathanaël Schaeffer, Dominique Jault, Henri-Claude Nataf +1
We present an attempt to reach realistic turbulent regime in direct numerical simulations of the geodynamo. We rely on a sequence of three convection-driven simulations in a rapidl…
Electrical conductivity of the lowermost mantle explains absorption of core torsional waves at the equator
Nathanaël Schaeffer, Dominique Jault
Torsional Alfv{é}n waves propagating in the Earth's core have been inferred by inversion techniques applied to geomagnetic models. They appear to propagate across the core but vani…
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…