Physics
Scientific paper
Aug 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....9512277s&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 95, Aug. 1, 1990, p. 12277-12286.
Physics
12
Earth Magnetosphere, Emission Spectra, Particle Interactions, Radiation Trapping, Very Low Frequencies, Wave Propagation, Spectrum Analysis, Wave Scattering
Scientific paper
A narrowband-filter spectral analysis is made of VLF emissions triggered by discrete waves transmitted from Siple Station, Antarctica and received at Lake Mistissini, Quebec, after ducted mode propagation. It is found that triggered emissions have a spectral structure similar to magnetospheric sidebands. As in the case of regular sidebands, their spectra and evolution are affected by the presence of power line radiation (PLR). Triggered emissions associated with monochromatic wave transmissions are explained as being caused by the interaction of the incoming wave with PLR. The issue of the importance of extremely weak signals in these phenomena is addressed, and it is shown that when a wave is perturbed by a weaker signal, sidebands and, consequently, triggered emissions can occur even if the amplitude ratio of the two signals is -50 dB. For such cases, the two waves should not be separated by a frequency larger than a few times the stronger wave trapping frequency. A mechanism, based on previous theoretical work, is presented to explain the creation and evolution of the triggered emissions studied in the paper.
No associations
LandOfFree
A wave-particle-wave interaction mechanism as a cause of VLF triggered emissions 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 A wave-particle-wave interaction mechanism as a cause of VLF triggered emissions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A wave-particle-wave interaction mechanism as a cause of VLF triggered emissions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1128631