VLF scattering from Red Sprites-Theory

Details VLF scattering from Red Sprites-Theory VLF scattering from Red Sprites-Theory

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998jastp..60..755r&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 60, Issue 7-9, p. 755-763.

Physics

9

Scientific paper

A relatively simple model of Red Sprites as a set of conducting columns reproduces the radio physics properties of VLF sprites. The columnar structure of optical sprites is represented by thin vertical conducting columns (or `Spritelets') in free space, with dimensions taken from optical observations. The scattered field from a set of coupled Spritelets has a complex amplitude pattern which normally includes some deep minima reproducing the `perturbation shadows' seen in some experimental events. It is not uncommon for the back scattered amplitudes to be similar to those for forward scatter in the theoretical model, as in experimental reports. As some sprite events appear to have closely spaced Spritelets, the results presented here indicate that there will be a high degree of electrical shielding. This is an application of the theory presented by[Rodger et al. (1997a)].

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