Electrical discharges and broadband radio emission by Martian dust devils and dust storms
Article first published online: 19 NOV 2003
Copyright 2003 by the American Geophysical Union.
Geophysical Research Letters
Volume 30, Issue 22, November 2003
How to Cite
2003), Electrical discharges and broadband radio emission by Martian dust devils and dust storms, Geophys. Res. Lett., 30, 2140, doi:10.1029/2003GL017879, 22., , , , and (
- Issue published online: 19 NOV 2003
- Article first published online: 19 NOV 2003
- Manuscript Accepted: 16 OCT 2003
- Manuscript Revised: 7 SEP 2003
- Manuscript Received: 2 JUN 2003
 Triboelectric charging of saltating and colliding sand and dust particles produces strong electric fields in terrestrial dust devils and dust storms. Acceleration of the charged particles, as well as microdischarges between them, generates wideband electromagnetic radiation. Similar phenomena are expected to be ubiquitous on Mars, because Martian dust devils and dust storms are larger, stronger and more frequent than their terrestrial analogues, and electrical discharges occur at a much lower potential gradient in the thin Martian atmosphere. We present theoretical arguments and observational evidence that Martian dust events produce nonthermal wideband electromagnetic radiation detectable from Earth.