Differential rotation of the liquid core of the Earth.
Abstract
Conditions for the appearance of anisotropic convection (a possible cause of the differential rotation of the earth's liquid core) are examined, and its parameters for the earth's core are determined. The distribution of the differential rotation is obtained, and the relative gradient of the angular velocities of the core and the mantle produced by the anisotropic convection is determined. The magnitude of this gradient is of the order of 10 exp -6, which is comparable with the western-drift velocity of the geomagnetic field.
- Publication:
-
Geomagnetism and Aeronomy
- Pub Date:
- February 1992
- Bibcode:
- 1992Ge&Ae..32..140N
- Keywords:
-
- Angular Velocity;
- Earth Core;
- Geomagnetism;
- Geophysical Fluids;
- Earth Mantle;
- Turbulent Flow;
- Velocity Distribution