Abstract
Volcanic plumes on the Jovian satellite Io may be a visible manifestation of a plasma-arc discharge phenomenon. The amount of power in the plasma arc (~ 1011 W) is not enough to account for all the energy dissipated by the volcanoes. However, once a volcano is initiated by tidal and geologic processes, the dynamics of the volcanic plumes can be influenced by the plasma arcs. As initially pointed out by Gold (1979), plasma arcs are expected because of ~ 106 A currents and 400 potentials generated by the flow past Io of a torus of relatively dense magnetospheric plasma. We utilize our experience with laboratory plasma arcs to investigate the plume dynamics. The filamentation in the plume of the volcano Prometheus and its cross-sectional shape is quantitatively consistent with theories developed from laboratory observation.
Paper dedicated to Professor Hannes Alfvén on the occasion of his 80th birthday, 30 May 1988.
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Peratt, A.L., Dessler, A.J. (1988). Filamentation of Volcanic Plumes on the Jovian Satellite IO. In: Fälthammar, CG., Arrhenius, G., De, B.R., Herlofson, N., Mendis, D.A., Kopal, Z. (eds) Plasma and the Universe. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-3021-6_31
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DOI: https://doi.org/10.1007/978-94-009-3021-6_31
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