TY  - JOUR
A1  - Le Mouel, Jean-Louis
A1  - Narteau, Clement
A1  - Greff-Lefftz, Marianne
A1  - Holschneider, Matthias
T1  - Dissipation at the core-mantle boundary on a small-scale topography
N2  - The parameters of the nutations are now known with a good accuracy, and the theory accounts for most of their values. Dissipative friction at the core-mantle boundary (CMB) and at the inner core boundary is an important ingredient of the theory. Up to now, viscous coupling at a smooth interface and electromagnetic coupling have been considered. In some cases they appear hardly strong enough to account for the observations. We advocate here that the CMB has a small- scale roughness and estimate the dissipation resulting from the interaction of the fluid core motion with this topography. We conclude that it might be significant
Y1  - 2006
UR  - http://www.agu.org/journals/jb/
U6  - https://doi.org/10.1029/2005jb003846
SN  - 0148-0227
ER  -