MF/HF auroral radio emissions emanating from the topside ionosphere

Details MF/HF auroral radio emissions emanating from the topside ionosphere MF/HF auroral radio emissions emanating from the topside ionosphere

Jul 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3714102s&link_type=abstract

Geophysical Research Letters, Volume 37, Issue 14, CiteID L14102

Physics

Plasma Physics

1

Ionosphere: Plasma Waves And Instabilities (2772), Ionosphere: Auroral Ionosphere (2704), Radio Science: Ionospheric Propagation (0689, 2487, 3285, 4275, 4455), Space Plasma Physics: Wave/Particle Interactions (2483, 6984), Space Plasma Physics: Wave/Wave Interactions

Scientific paper

This is a brief report on the first observation of polarization features and the source region of MF/HF auroral radio emissions emanating from the topside ionosphere. These emissions are called “Terrestrial Hectometric Radiation (THR)” and regarded as a counterpart of auroral roar and MF burst which are observable from the ground. THR typically occurs in either or both of two frequency bands near 1.5-2.0 MHz and 3.0-4.0 MHz, whose polarization features correspond to the L-O and R-X mode. The R-X mode, which has never been reported as auroral roar and MF burst, can be attributed to nonlinear coupling of two upper hybrid waves. The Akebono satellite observation shows THR emissions merge with upper hybrid waves in a frequency-time diagram under the matching condition fUH ˜ 2fce. This observation suggests that plasma instability enhances the upper hybrid waves under this condition, and then they are converted into MF/HF auroral radio emissions.

Affiliated with

Also associated with

No associations

Rating

MF/HF auroral radio emissions emanating from the topside ionosphere 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 MF/HF auroral radio emissions emanating from the topside ionosphere, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and MF/HF auroral radio emissions emanating from the topside ionosphere will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-957418