| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5487647 | Journal of Atmospheric and Solar-Terrestrial Physics | 2016 | 6 Pages |
Abstract
We document for the first time observations of point discharge currents under dust devils using a novel compact sensor deployed in summer 2016 at the USDA-ARS Jornada Experimental Range in New Mexico, USA. A consistent signature is noted in about a dozen events seen over 40 days, with a positive current ramping up towards closest approach, switching to a decaying negative current as the devil recedes. The currents, induced on a small wire about 10Â cm above the ground, correlate with dust devil intensity (pressure drop) and dust loading, and reached several hundred picoAmps.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geophysics
Authors
Ralph D. Lorenz, Lynn D.V. Neakrase, John P. Anderson, R. Giles Harrison, Keri A. Nicoll,