Multiflash whistlers in ELF-band observed at low latitude
Singh, A. K.;Singh, K. K.;Singh, S. B.;Singh, S. B.;Singh, A. K.;Lalmani, ;
annales geophysicae2011Vol. 29pp. 91-96
238
singh2011multiflashannales
Abstract
Multiflash whistler-like event in the ELF-band, observed during
March 1998 at low latitude station Jammu, is reported. The most
prominent feature of these events is the multiflash nature along
with the decrease in frequency within a very short span of time
resembling similar to terrestrial whistlers. The events have a
significantly smaller time duration (0.5–3.5 s) than those
reported earlier from high, mid and low latitudes and also display a
diurnal maximum occurring around 09:30 h (IST). There have been
similar reportings from other latitudes, but whistlers in the
ELF-band with a multiflash nature along with a precursor emission
have never been reported. Lightning seems to be the dominant source
for the ELF whistlers reported here.