Penetration of lightning MF signals to the upper ionosphere over VLF ground-based transmitters

Details Penetration of lightning MF signals to the upper ionosphere over VLF ground-based transmitters Penetration of lightning MF signals to the upper ionosphere over VLF ground-based transmitters

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009jgra..11412318p&link_type=abstract

Journal of Geophysical Research, Volume 114, Issue A12, CiteID A12318

Physics

4

Ionosphere: Ionospheric Disturbances, Ionosphere: Active Experiments, Atmospheric Processes: Lightning, Ionosphere: Electric Fields (2712), Ionosphere: Wave Propagation (0689, 3285, 4275, 4455, 6934)

Scientific paper

The MF data recorded by the low-altitude satellite DEMETER have been used to survey the MF waves around the Earth. A global map of the MF emissions indicates that there exists a wave activity in the frequency range 2-2.5 MHz above the main powerful VLF ground-based transmitters operating in the frequency range 18-50 kHz. It is shown that this is due to the high-frequency part of whistlers induced by the thunderstorm activity. They can penetrate trough the ionosphere at the locations of the transmitters because these transmitters induce large ionospheric perturbations. This means that an integrated map over several months is able to show these MF emissions above all main VLF transmitters. The discrepancy between intensities of the emissions in winter and summer (in the Northern Hemisphere) is explained by considering the geographic variations of the plasma frequency below the satellite. It is shown that the MF waves spread in longitude in the hemisphere opposite to the VLF transmitters.

Affiliated with

Also associated with

No associations

Rating

Penetration of lightning MF signals to the upper ionosphere over VLF ground-based transmitters does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Penetration of lightning MF signals to the upper ionosphere over VLF ground-based transmitters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Penetration of lightning MF signals to the upper ionosphere over VLF ground-based transmitters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1697105