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- M. Le Bars, L. Lacaze, S. Le Dizès, P. Le Gal, M. Rieutord
- 2017

In this paper, we combine theoretical and experimental approaches to study the tidal instability in planetary liquid cores and stars. We demonstrate that numerous complex modes can be excited depending on the relative values of the orbital angular velocity Ωorbit and of the spinning angular velocity Ωspin, except in a stable range characterized by… (More)

- Olivier Pouliquen, Yoël Forterre, Stéphane Le Dizes
- Advances in Complex Systems
- 2001

A simple model is presented for the description of steady uniform shear ow of granular material. The model is based on a stress uctuation activated process. The basic idea is that shear between two particles layers induces uctuations in the media that may trigger a shear at some other position. Based on this idea a minimum model is derived and applied to di… (More)

A theoretical and experimental study of the spin-over mode induced by the elliptical instability of a flow contained in a slightly deformed rotating spherical shell is presented. This geometrical configuration mimics the liquid rotating cores of planets when deformed by tides coming from neighboring gravitational bodies. Theoretical estimations for the… (More)

- Arnaud Antkowiak, Nicolas Bremond, +4 authors E. VILLERMAUX
- 2017

- S. Le Dizès, B. L. Kwiatkowski, +4 authors S. Daeschner
- 2003

[1] We used a process-based ecosystem model (Marine Biological Laboratory General Ecosystem Model (MBL-GEM III)) to predict and analyze biogeochemical responses of Arctic tundra ecosystems to past (1921–2000) and future (2001–2100) changes in climate and atmospheric CO2 in the Kuparuk River Basin, Alaska. We first calibrated the model by deriving a single… (More)

We study the short-time dynamics of a liquid ligament, held between two solid cylinders, when one is impulsively accelerated along its axis. A set of one-dimensional equations in the slender-slope approximation is used to describe the dynamics, including surface tension and viscous effects. An exact self-similar solution to the linearized equations is… (More)

- S Le Dizès, D Maro, D Hébert, M-A Gonze, C Aulagnier
- Journal of environmental radioactivity
- 2012

Many nuclear facilities release ¹⁴C into the environment, mostly as ¹⁴CO₂, which mixes readily with stable CO₂. This complete isotopic mixing (equilibrium) is often used as the basis for dose assessment models. In this paper, a dynamic compartment model (TOCATTA) has been investigated to describe ¹⁴C transfer in agricultural systems exposed to atmospheric… (More)