ULF-VLF electric field measurements during the 2001 Leonid storm

Details ULF-VLF electric field measurements during the 2001 Leonid storm ULF-VLF electric field measurements during the 2001 Leonid storm

Nov 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.500..161t&link_type=abstract

In: Proceedings of Asteroids, Comets, Meteors - ACM 2002. International Conference, 29 July - 2 August 2002, Berlin, Germany. Ed

Computer Science

1

Leonids: Electromagnetic Waves

Scientific paper

The generation of electromagnetic waves by the impacts of meteors in the upper earth atmosphere has been as subject of controversial discussion during the last decades. While there is some evidence for emissions in the VF/VLF range (300 Hz - 30 kHz), the generation of ULF/ELF waves (3 Hz - 300 Hz) by meteor impacts is poorly demonstrated. As part of a comprehensive observation campaign undertaken by a team from the European Space Agency the vertical electric field has been monitored in parallel to optical video recordings of the 2001 Leonid storm in order to correlate optical observations and electric field measurement data. First, the instrumentation and recording equipment is introduced. Electric field measurement data in the frequency and time domain are presented. Particular attention is paid to the analysis of data in the 10 Hz - 300 Hz frequency range, which includes Schumann resonance frequencies. The results of a comparison of global ZHR data and the activity at selected ULF/ELF frequencies are shown. Preliminary conclusions are drawn, and methods for the improvements of results are suggested.

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