TITLE:
Study of Duct Characteristics Deduced from Low Latitude Ground Observations of Day-Time Whistler at Jammu
AUTHORS:
M. Altaf, M. M. Ahmad
KEYWORDS:
Electron Density; Dispersion; Duct Whistlers; Ionosphere
JOURNAL NAME:
International Journal of Astronomy and Astrophysics,
Vol.3 No.3,
September
3,
2013
ABSTRACT: Propagation characteristics of low latitude whistler
duct characteristics have been investigated based on day-time measurements at
Jammu. The morphogical characteristics of low latitude whistlers are discussed
and compared with characteristics of middle and high latitude whistlers. The Max. electron
density (Nm) at the height
of the ionosphere obtained from whistler dispersion comes out to be higher than
that of the background which is in accordance with the characteristics of
whistler duct. The equivalent width is found to be close to the satellite
observations and the characteristics of whistler duct in low latitude
ionosphere are similar to those in middle and high latitude ionosphere. The
width of ducts estimated from the diffuseness of the whistler track observed
during magnetic storm is found to lie in the range of 50 - 200 Km.