Dominique JAULT

CNRS researcher (Directeur de recherche)

Email: FirstName.LastName@ujf-grenoble.fr
Tel.: +33 4 76 63 52 63
Fax.: +33 4 76 63 52 52

Research activities:

My most recent works are about the modelling of the observed changes of the Earth’s magnetic field. From a theoretical standpoint, I try to characterize the physics of rapidly varying motions within a fast rotating spherical shell permeated by a magnetic field. From a geophysical standpoint, we interpret the variations of the Earth’s magnetic field at the core surface as the result of quasi-geostrophic two-dimensional motions forced by the magnetic field in the core interior. In collaboration with Dr A. Pais (U. Coimbra) and Dr N. Gillet, we have inferred the presence of a planetary-scale anticyclonic gyre in the Earth’s fluid core. I now take part in a research programme (VSQG) consisting in variational assimilation of geomagnetic data in a quasi-geostrophic model of the Earth's core.

Member of the Grenoble geodynamo team , I contribute to the interpretation of the measurements obtained from different experiments. They are all designed to shed light on the dynamo effect that spawns the Earth’s magnetic field. I have undertaken partial numerical simulations of the DTS experiment: spherical Taylor-Couette configuration, in the presence of rapid rotation and_ strong ambiant magnetic field for high magnetic Reynolds number (liquid sodium).
Publications list.

Updated: January 2010