Lightning generated sferics: diagnostics tools to study upper atmosphere

Kumar, Sushil and Singh, Rajesh and Veenadhari, B. and Maurya, Ajeet K. (2010) Lightning generated sferics: diagnostics tools to study upper atmosphere. [Conference Proceedings]

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Abstract

Atmospherics or sferics that originate from lightning discharges on propagating large distances in the Earth-ionosphere waveguide or in the dispersive regions of ionosphere and magnetosphere form dispersed sferics called tweeks and whistlers respectively. Tweeks are novel diagnostic tool to monitor the nighttime D-region ionosphere. In this paper the lightning sferics (tweeks) recorded at a low latitude station, Suva (18.2o S,178.3oE, geomag. lat. 22.2o S, L = 1.17)) Fiji, in the South Pacific region and Allahabad (geomag. lat. 16.490 N, L=1.09) in India, will be presented and shown how they could be used to probe the night time D-region of the ionosphere. The computed D-region electron density is then compared with the electron density profile obtained from International Reference Ionosphere (IRI) 2007 model. Typical records of whistlers observed in Fiji and in India are presented.

Item Type:	Conference Proceedings
Subjects:	Q Science > QC Physics
Divisions:	School of Information Technology, Engineering, Mathematics and Physics (STEMP)
Depositing User:	Ms Shalni Sanjana
Date Deposited:	21 Mar 2022 00:48
Last Modified:	21 Mar 2022 00:48
URI:	http://repository.usp.ac.fj/id/eprint/13326

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