Relationship between median intensities of electromagnetic emissions in the VLF range and lightning activity

0349141 - ÚFA 2011 RIV US eng J - Journal Article
Němec, František - Santolík, Ondřej - Parrot, M. - Rodger, C. J.
Relationship between median intensities of electromagnetic emissions in the VLF range and lightning activity.
Journal of Geophysical Research. Roč. 115, - (2010), A08315/1-A08315/10. ISSN 0148-0227
R&D Projects: GA ČR GA205/09/1253; GA ČR GAP205/10/2279; GA MŠMT ME09107
Institutional research plan: CEZ:AV0Z30420517
Keywords : lightning activity * VLF electromagnetic waves * DEMETER satellite
Subject RIV: BL - Plasma and Gas Discharge Physics
Impact factor: 3.303, year: 2010

We present results of a survey of VLF electromagnetic waves observed by the DEMETER spacecraft (altitude about 700 km, launched in June 2004, and still operating). The median value of the power spectral density of electric field fluctuations in the frequency range 1–10 kHz is evaluated as a function of the position of the spacecraft, frequency, magnetic local time, and season of the year. It is shown that there are significant seasonal differences between the satellite observed wave intensities throughout the year and it is demonstrated that these are due to the lightning activity changes of the Earth.
Permanent Link: http://hdl.handle.net/11104/0189457