Claim CD701.1:
Cowling's theorem proves that the dynamo theory of earth's magnetic field
is wrong.
Source:
Barnes, Thomas G., 1973. Origin and destiny of Earth's magnetic field,
ICR Technical Monograph No. 4.
Response:
- Cowling's theorem proves that an axially symmetric field cannot be
maintained through a self-sustaining dynamo by an axially symmetric
current. However, this theorem is limited to special cases. A
symmetric field can be generated, for example, by nonuniform convection
(Cowling 1981).
References:
- Cowling, T. G., 1981. The present status of dynamo theory. Annual
Review of Astronomy and Astrophysics 19: 115-135.
created 2001-2-18
