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 -