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of 152
pro vyhledávání: '"Nataf, Henri"'
Palaeomagnetic evidence shows that the behaviour of the geodynamo has changed during geological times. Variations in the heat flux at the core-mantle boundary (CMB) due to mantle convection could be responsible. Previous studies, based on unrealistic
Externí odkaz:
http://arxiv.org/abs/2406.15083
Publikováno v:
Comptes Rendus. G\'eoscience, 356 (2024), 1-30
Planetary cores are the seat of rich and complex fluid dynamics, in which the effects of rotation and magnetic field combine. The equilibria governing the strength of the magnetic field produced by the dynamo effect, the organisation and amplitude of
Externí odkaz:
http://arxiv.org/abs/2307.04598
Publikováno v:
Chinese Journal of Geophysics, 2006, 49 (5), pp.1210-1219
During the centennial period from 1900 to 2000, the globally averaged unsigned annual rate of the main geomagnetic field experienced a three-episode variation. The maximum annual rates occurred respectively around 1910-1920, 1940-1950, and 1970-1980,
Externí odkaz:
http://arxiv.org/abs/2209.06486
Autor:
Nataf, Henri-Claude
Publikováno v:
Solar Physics, Springer Verlag, In press
The idea of a planetary origin for the solar cycle dates back to the nineteenth century. Despite unsurmounted problems, it is still advocated by some. Stefani, Giesecke, and Weier (2019) thus recently proposed a scenario based on this idea. A key arg
Externí odkaz:
http://arxiv.org/abs/2206.14809
Autor:
Su, Sylvie, Cébron, David, Nataf, Henri-Claude, Cardin, Philippe, Vidal, Jérémie, Solazzo, Max, Do, Yann
Publikováno v:
European Journal of Mechanics - B/Fluids, Elsevier, 2020, 84, pp.302-310
The acoustic spectrum of a gas-filled resonating cavity can be used to indirectly probe its internal velocity field. This unconventional velocimetry method is particularly interesting for opaque fluid or rapidly rotating flows, which cannot be imaged
Externí odkaz:
http://arxiv.org/abs/2011.09267
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 rapidly rotating spherical shell. The most extreme case reaches towards the
Externí odkaz:
http://arxiv.org/abs/1701.01299
Akademický článek
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Publikováno v:
Phys. Rev. Fluids 3, 034608 (2018)
The Derviche Tourneur Sodium experiment, a spherical Couette magnetohydrodynamics experiment with liquid sodium as the medium and a dipole magnetic field imposed from the inner sphere, recently underwent upgrades to its diagnostics to better characte
Externí odkaz:
http://arxiv.org/abs/1610.03964
The dynamics of fluctuations in a fast rotating spherical Couette flow experiment in the presence of a strong dipolar magnetic field is investigated in detail, through a thorough analysis of the experimental data as well as a numerical study. Fluctua
Externí odkaz:
http://arxiv.org/abs/1601.05684
Autor:
Beauvais, Catherine, Rodère, Malory, Pereira, Bruno, Legoupil, Nathalie, Piperno, Muriel, Pallot-Prades, Beatrice, Castaing, Patricia, Wendling, Daniel, Grange, Laurent, Costantino, Félicie, Carton, Laurence, Soubrier, Martin, Coquerelle, Pascal, Pham, Thao, Poivret, Didier, Cohen, Jean-David, Tavares, Isabelle, Nataf, Henri, Pouplin, Sophie, Sordet, Christelle, Gossec, Laure
Publikováno v:
In Revue du rhumatisme May 2020 87(3):194-199
