Broadband VLF measurements of lightning-induced ionospheric perturbations

Details Broadband VLF measurements of lightning-induced ionospheric perturbations Broadband VLF measurements of lightning-induced ionospheric perturbations

Apr 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3208804c&link_type=abstract

Geophysical Research Letters, Volume 32, Issue 8, CiteID L08804

Physics

11

Ionosphere: Ionosphere/Atmosphere Interactions (0335), Ionosphere: Ionospheric Disturbances, Ionosphere: Wave Propagation (0689, 3285, 4275, 4455, 6934), Atmospheric Processes: Lightning, Atmospheric Processes: Remote Sensing

Scientific paper

Very low frequency (VLF) electromagnetic pulses radiated by lightning are an effective tool for probing the D region ionosphere. We detect and measure the D region ionospheric disturbances caused by the strong lightning flash by analyzing the broadband VLF spectrum from lightning that occurred just before and after a nearby intense lightning discharge. Comparing the measured electron density changes to those from previous measurements and the theoretical expectations, we find the detected perturbations are consistent with the theoretically predicted ionization changes produced directly by the lightning electromagnetic pulse.

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