URSI JOINT WORKING GROUP on:
V . E . R . S . I . M
The working group on VLF/ELF Remote Sensing of the Ionosphere
and Magnetosphere (VERSIM) is an international group of scientists interested
in studying the behaviour of the magnetosphere and ionosphere by means
of ELF (300 Hz - 3 kHz) and VLF (3-30 kHz) radio waves, both naturally
and artificially generated. The group was set up in 1975 by IAGA
(International Association of Geomagnetism and Aeronomy) and URSI
Union of Radio Science), as described in the working group
Originally the emphasis was on probing of the magnetosphere by whistlers,
but later the scope became somewhat broader. The group aims to promote
research in this field by facilitating the exchange of ideas, information
and experience between active research workers and other interested scientists.
This is done through regular meetings at IAGA and URSI Assemblies, a regular
VERSIM community workshop, and
via the circulation of a newsletter. The group has also been active in
sponsoring scientific symposia at IAGA and URSI Assemblies, in areas relevant
to its field of interest, and in coordinating observational campaigns.
At present the main subjects of interest include
Plasma structures and
boundaries - morphology and dynamics,
Wave-particle and wave-wave
Wave-induced particle precipitation, Wave propagation
in magnetosphere and ionosphere,
Sprites and the effects of lightning
on the ionosphere. There are currently over 100 scientists from about 26
different countries on the VERSIM mailing list.
The website has moved, and is now hosted by
This document is maintained by C .J. Rodger and was last
updated 16 July 2014.
Return to Contents