9-13 July 2012
Africa/Johannesburg timezone
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Correlating fractional hop whistlers detected on DEMETER with WWLLN lightning

Presented by Mr. Brett DELPORT on 11 Jul 2012 from 10:55 to 11:15
Type: Oral Presentation
Session: Space Science
Track: Track D2 - Space Science


It is well known that the number of lightning strokes at a particular location far exceeds the number of whistlers detected at the conjugate point. Correlation analyses between global lightning and whistlers have revealed that it is possible for the initiating lightning stroke to be a significant distance from the conjugate point. This study aims to further explore this result. Whistlers are frequently observed at Tihany, Hungary, which is magnetically conjugate to a point off the east coast of South Africa.Using broadband VLF data from the DEMETER satellite and lightning data from WWLLN, we have computed the regions which produce lightning capable of launching whistler mode waves into the magnetosphere above the conjugate point. DEMETER is a satellite in a quasi Sun-synchronous, low earth orbit which suffers from timing inaccuracies. Due to these inaccuracies, we have calibrated the data using data from the South African Lightning Detection Network.






Andrew Collier (collierab@gmail.com)




Location: IT 4-3

Primary authors