Modulational instability and soliton formation during ionospheric heating

Details Modulational instability and soliton formation during ionospheric heating Modulational instability and soliton formation during ionospheric heating

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....8910921p&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 89, Dec. 1, 1984, p. 10921-10928.

Physics

23

Electrostatic Waves, Ionospheric Heating, Ionospheric Propagation, Magnetohydrodynamic Stability, Solitary Waves, Electric Fields, Nonlinear Systems, Radio Probing, Reflected Waves, Wave Generation

Scientific paper

The most intense electric fields during ionospheric heating occur a fraction of a kilometer below the classical reflection point. At this location, the nonlinear evolution of Langmuir waves is studied within the context of the modified Zakharov equations. It is found that the modulational instability (oscillating two-stream instability) is more important than the three-wave parametric decay instability, leading to the rapid formation of solitons.

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