NASA NTRS · 19930030963
Ionospheric modification with a VLF transmitter
Abstract
Detectable heating of the nightime D region by a 28.5 kHz signal is observed in 16 out of 144 cases with events occurring under conditions of moderate to low D region electron densities as represented by the unperturbed VLF signal levels. Three dimensional modeling of the effects of NAU heating on a probe VLF signal predicts values in general agreement with observations and suggests that maximum effects should occur under tenuous D region conditions.
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Inan, Umran S., Rodriguez, Juan V., Lev-Tov, S., Oh, J.. 1992-10-23. Ionospheric modification with a VLF transmitter. https://ntrs.nasa.gov/citations/19930030963
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