ELF sferic energy as a proxy indicator for sprite occurrence

Details ELF sferic energy as a proxy indicator for sprite occurrence ELF sferic energy as a proxy indicator for sprite occurrence

Apr 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26..987r&link_type=abstract

Geophysical Research Letters, Volume 26, Issue 7, p. 987-990

Physics

22

Ionosphere: Ionosphere/Atmosphere Interactions, Meteorology And Atmospheric Dynamics: Atmospheric Electricity, Meteorology And Atmospheric Dynamics: Lightning, Meteorology And Atmospheric Dynamics: Mesoscale Meteorology

Scientific paper

Broadband ELF/VLF measurements of sferics near Ft. Collins, Colorado, demonstrate that ELF sferic energy is a proxy for sprite occurrence which can be used to estimate the number of sprites produced by a thunderstorm. Ultra-long range (~12,000 km) measurements at Palmer Station, Antarctica, confirm the application of this proxy to storms where no video observations of sprites are available. Comparison with high-resolution photometer measurements demonstrate the simultaneity of sprite luminosity and an ELF ``second pulse'' believed to be radiated by electrical currents within the sprite body [Cummer et al., 1998]. Measurements of the second ELF pulse are used to identify a quantitative relationship between the current in sprites and total sprite luminosity.

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