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Nonlinear Processes in Geophysics An interactive open-access journal of the European Geosciences Union
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Volume 15, issue 4 | Copyright

Special issue: Nonlinear Processes in the Space Environment

Nonlin. Processes Geophys., 15, 621-630, 2008
https://doi.org/10.5194/npg-15-621-2008
© Author(s) 2008. This work is distributed under
the Creative Commons Attribution 3.0 License.

  30 Jul 2008

30 Jul 2008

New results of investigations of whistler-mode chorus emissions

O. Santolík O. Santolík
  • Institute of Atmospheric Physics, Prague and Charles University, Prague, Czech Republic

Abstract. This review summarizes selected recent results obtained during investigation of whistler-mode chorus emissions in the Earth's magnetosphere. Special attention is paid to results published during the last five years, with a focus on the results of the CLUSTER project. The nonlinear nature of chorus emissions is demonstrated using both theoretical results and measurements. Selected areas of research on whistler-mode chorus are covered and the paper especially reports new results on substructure and amplitudes of chorus wave packets, on new observations of frequency differences of chorus wave packets at different points in space and on their possible interpretations, on results concerning determination of position and size of the source region of chorus, on recent observational and theoretical results which lead to improved description of propagation of chorus from its source, and, finally, on comparison of chorus measurements with corresponding values deduced from nonlinear theory and simulations.

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