Lancaster EPrints

Electrical charging of volcanic plumes

James, M. R. and Wilson, L. and Lane, Stephen and Gilbert, J. S. and Mather, T. A. and Harrison, R. G. and Martin, R. S. (2008) Electrical charging of volcanic plumes. Space Science Reviews, 137 (1-4). pp. 399-418. ISSN 0038-6308

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Abstract

Many explosive terrestrial volcanic eruptions are accompanied by lightning and other atmospheric electrical phenomena. The plumes produced generate large perturbations in the surface atmospheric electric potential gradient and high charge densities have been measured on falling volcanic ash particles. The complex nature of volcanic plumes (which contain gases, solid particles, and liquid drops) provides several possible charging mechanisms. For plumes rich in solid silicate particles, fractoemission (the ejection of ions and atomic particles during fracture events) is probably the dominant source of charge generation. In other plumes, such as those created when lava enters the sea, different mechanisms, such as boiling, may be important. Further charging mechanisms may also subsequently operate, downwind of the vent. Other solar system bodies also show evidence for volcanism, with activity ongoing on Io. Consequently, volcanic electrification under different planetary scenarios (on Venus, Mars, Io, Moon, Enceladus, Tethys, Dione and Triton) is also discussed.

Item Type: Article
Journal or Publication Title: Space Science Reviews
Uncontrolled Keywords: Volcanic eruptions ; Lightning ; Fractoemission ; Tribocharging ; Particle aggregation
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 13234
Deposited By: Dr Steve Lane
Deposited On: 09 Sep 2008 16:20
Refereed?: Yes
Published?: Published
Last Modified: 09 Apr 2014 20:20
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/13234

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