Research output: Contribution to Journal/Magazine › Journal article › peer-review
Volcanic plume monitoring using atmospheric electric potential gradients. / James, Mike R.; Lane, Stephen; Gilbert, Jennifer.
In: Journal of the Geological Society, Vol. 155, No. 4, 1998, p. 587-590.Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Volcanic plume monitoring using atmospheric electric potential gradients.
AU - James, Mike R.
AU - Lane, Stephen
AU - Gilbert, Jennifer
PY - 1998
Y1 - 1998
N2 - 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.
AB - 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.
KW - electrical field • volcanic ash • explosive eruptions • geological hazards
U2 - 10.1144/gsjgs.155.4.0587
DO - 10.1144/gsjgs.155.4.0587
M3 - Journal article
VL - 155
SP - 587
EP - 590
JO - Journal of the Geological Society
JF - Journal of the Geological Society
SN - 0016-7649
IS - 4
ER -