Dynamo Action of Jupiter's Zonal Winds
Abstract
We use updated models for the zonal flow in Jupiter's outer envelope, for Jupiter's magnetic field, and for the electrical conductivity profile to predict the dynamo action of the planet's zonal winds. The results suggest that the radial field is about three orders of magnitude smaller than the main background field of the planet. The zonal wind dynamo action may therefore be hard to detect by the Juno magnetometer. What may help here, however, is a very distinct pattern that reflects the zonal wind system and Jupiter's main field. We also predict the Ohmic heating by the zonal winds and show that it remains below a new estimate of 1.2x10^18 W for the total dissipative heating in Jupiter.
- Publication:
-
EPSC-DPS Joint Meeting 2019
- Pub Date:
- September 2019
- Bibcode:
- 2019EPSC...13.1898W