Poincaré flow in the Earth's core

Details Poincaré flow in the Earth's core Poincaré flow in the Earth's core

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jsrs.meet...45d&link_type=abstract

In: Journées 2004 - systèmes de référence spatio-temporels. Fundamental astronomy: new concepts and models for high accuracy obs

Astronomy and Astrophysics

Astronomy

Earth Core: Motion

Scientific paper

In this paper, we discuss the motion inside the Earth's core. At low frequency, torsional oscillations occur associated with magneto-hydrodynamic effects. At high frequency, the Poincaré flow is believed to be a good approximation of the fluid dynamics. This simple flow is deduced in a very simplified case, but it appears to be true in a broader range of configurations.

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