thumbnail

Jovian dust streams: A monitor of Io's volcanic plume activity

Geophysical Research Letters

By:
, , , , , , , , ,

Links

  • The Publications Warehouse does not have links to digital versions of this publication at this time

Abstract

Streams of high speed dust particles originate from Jupiter's moon Io. After release from Io, the particles collect electric charges in the Io plasma torus, gain energy from the co-rotating electric field of Jupiter's magnetosphere, and leave the Jovian system into interplanetary space with escape speeds over 200 km s-1. The Galileo spacecraft has continuously monitored the dust streams during 34 revolutions about Jupiter between 1996 and 2002. The observed dust fluxes exhibit large orbit-to-orbit variability due to systematic and stochastic changes. After removal of the systematic variations, the total dust emission rate of Io has been calculated. It varies between 10-3 and 10 kg s-1, and is typically in the range of 0.1 to 1 kg s-1. We compare the dust emission rate with other markers of volcanic activity on Io like large-area surface changes caused by volcanic deposits and sightings of volcanic plumes. Copyright 2003 by the American Geophysical Union.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Jovian dust streams: A monitor of Io's volcanic plume activity
Series title:
Geophysical Research Letters
Volume
30
Issue:
21
Year Published:
2003
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article