Physics
Scientific paper
Oct 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.8111w&link_type=abstract
Journal of Geophysical Research, vol. 87, Oct. 1, 1982, p. 8111-8117.
Physics
2
Jupiter Atmosphere, Magnetohydrodynamic Flow, Planetary Ionospheres, Planetary Magnetic Fields, Planetary Magnetospheres, Resistance Heating, Rotating Plasmas, Angular Velocity, Field Strength, Io, Lines Of Force, Magnetohydrodynamic Waves, Radial Flow
Scientific paper
When radial flow is generated in the rapidly rotating magnetosphere of Jupiter, the angular velocity of the magnetospheric plasma departs from the corotational value as a consequence of the conservation of angular momentum. This brings about a twisting of magnetic field lines in the magnetosphere and Joule heating in the ionosphere. The energy storage and dissipation rates are estimated using a model in which the finite transit time of the signals between the equatorial plasma disk and the ionosphere as well as the reflection of the signal at the ionosphere are taken into account. For the case of the inward flow produced by the magnetospheric compression, the energy stored in the magnetic field and the energy dissipated in the ionosphere while the compression is in progress both amount to 10 to the 17th-18th J.
Nishida Akira
Watanabe Yu
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