275 citations · 749 across the 14 of their papers we have counts for
14 papers
An assessment of implicit-explicit time integrators for the pseudo-spectral approximation of Boussinesq thermal convection in an annulus
V. Gopinath, A. Fournier, T. Gastine
We analyze the behaviour of an ensemble of time integrators applied to the semi-discrete problem resulting from the spectral discretization of the equations describing Boussinesq c…
Geomagnetic semblance and dipolar-multipolar transition in top-heavy double-diffusive geodynamo models
Théo Tassin, Thomas Gastine, Alexandre Fournier
Convection in the liquid outer core of the Earth is driven by thermal and chemical perturbations. The main purpose of this study is to examine the impact of double-diffusive convec…
Dynamo-based limit to the extent of a stable layer atop Earth's core
Thomas Gastine, Julien Aubert, Alexandre Fournier
The existence of a stably stratified layer underneath the core-mantle boundary (CMB) has been recently revived by corroborating evidences coming from seismic studies, mineral physi…
Variational estimation of the large scale time dependent meridional circulation in the Sun: proofs of concept with a solar mean field dynamo model
Ching Pui Hung, Allan Sacha Brun, Alexandre Fournier +3
We present in this work the development of a solar data assimilation method based on an axisymmetric mean field dynamo model and magnetic surface data, our mid-term goal is to pred…
Estimating the deep solar meridional circulation using magnetic observations and a dynamo model: a variational approach
Ching Pui Hung, Laurène Jouve, Allan Sacha Brun +2
We show how magnetic observations of the Sun can be used in conjunction with an axisymmetric flux-transport solar dynamo model in order to estimate the large-scale meridional circu…
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…