On the association of terrestrial gamma-ray bursts with lightning and implications for sprites
Date
1996
Authors
Inan, Umran, S., author
Fishman, Gerald J., author
Reising, Steven C., author
Horack, John M., author
American Geophysical Union, publisher
Journal Title
Journal ISSN
Volume Title
Abstract
Measurements of ELF/VLF radio atmospherics (sferics) at Palmer Station, Antarctica, provide evidence of active thunderstorms near the inferred source regions of two different gamma-ray bursts of terrestrial origin [Fishman et al., 1994]. In one case, a relatively intense sferic occurring within ±1.5 ms of the time of the gamma-ray burst provides the first indication of a direct association of this burst with a lightning discharge. This sferic and many others launched by positive cloud-to-ground (CG) discharges and observed at Palmer during the periods studied exhibit 'slow tail' waveforms, indicative of continuing currents in the causative lightning discharges. The slow tails of these sferics are similar to those of sferics originating in positive CG discharges that are associated with sprites.