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Dissipation at the core-mantle boundary on a small-scale topography
- 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
| Author details: | Jean-Louis Le Mouel, Clement Narteau, Marianne Greff-Lefftz, Matthias HolschneiderORCiDGND |
|---|---|
| URL: | http://www.agu.org/journals/jb/ |
| DOI: | https://doi.org/10.1029/2005jb003846 |
| ISSN: | 0148-0227 |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2006 |
| Publication year: | 2006 |
| Release date: | 2017/03/24 |
| Source: | Journal of geophysical research : solid earth. ISSN 0148-0227. - 111 (2006), B4, Art. B04413 |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| Peer review: | Referiert |
| Institution name at the time of the publication: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik |
