Physics – Plasma Physics
Scientific paper
Jun 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999jgr...10412525b&link_type=abstract
Journal of Geophysical Research, Volume 104, Issue A6, p. 12525-12536
Physics
Plasma Physics
4
Space Plasma Physics: Shock Waves, Space Plasma Physics: Wave/Wave Interactions
Scientific paper
The role of the nonlinear interaction in developed low-frequency turbulence has been experimentally studied upstream of the ramp of a quasiperpendicular shock. The study has been carried out by application of the methods of bispectral analysis and wavelet decomposition to the Active Magnetospheric Particle Tracer Explorer Ion Release Module and Interball Tail Probe magnetic field data. It is shown that three-wave processes play a key role in the formation of the spectrum of the turbulence. Experimental results presented and previous theoretical considerations lead to the conclusion that energy is transfered from a narrow maximum frequency pumped by nonlinear dynamic processes to lower and higher frequencies.
Alleyne Hugo St. C. K.
Balikhin Michael A.
Baumjohann Wolfgang
Nozdrachev M. N.
Treumann Rudolf A.
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