James, Mike R. and Lane, Stephen and Gilbert, Jennifer (1998) Volcanic plume monitoring using atmospheric electric potential gradients. Journal of the Geological Society, London, 155 (4). pp. 587-590. ISSN 0016-7649Full text not available from this repository.
By monitoring perturbations of the natural atmospheric electric potential gradient, it is possible to detect and track particle laden volcanic plumes. The perturbations are produced by electrical charge that resides on the solid particles and liquid droplets of the plume, and the ions within it. A network of potential gradient monitoring stations around a volcano can provide data on eruption time, magnitude, plume dispersion direction and areas of ashfall. Our laboratory experiments have produced electrically charged ash by fragmenting pumice. These results support the theory that charging is due to the magma fragmentation process and should therefore be ubiquitous in all particulate volcanic plumes.
|Journal or Publication Title:||Journal of the Geological Society, London|
|Uncontrolled Keywords:||electrical field • volcanic ash • explosive eruptions • geological hazards|
|Subjects:||Q Science > QE Geology|
|Departments:||Faculty of Science and Technology > Lancaster Environment Centre|
|Deposited By:||Dr Steve Lane|
|Deposited On:||15 Sep 2008 10:02|
|Last Modified:||26 Jul 2012 15:06|
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