Physics – Plasma Physics
Scientific paper
Apr 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998jgr...103.6771s&link_type=abstract
Journal of Geophysical Research, Volume 103, Issue A4, p. 6771-6784
Physics
Plasma Physics
16
Magnetospheric Physics: Plasma Waves And Instabilities, Space Plasma Physics: Nonlinear Phenomena, Space Plasma Physics: Numerical Simulation Studies, Space Plasma Physics: Waves And Instabilities
Scientific paper
The VLF database from Halley station, Antarctica, has been searched, and prominent examples of discrete emissions are presented. Risers, fallers, quasi-constant tones, and upward and downward hooks are all common. Also observed are risers and fallers triggered from the tops of hiss bands. A one-dimensional Vlasov VHS code has been used to simulate the main types of events observed. Using realistic plasma parameters, the code successfully reproduces the main kinds of events observed, in good qualitative agreement with observations. Distinct generation region structures are found to be associated with risers and fallers. Hook formation is interpreted as being a spontaneous transition between these two quasi-stable generation region structures.
Nunn David
Smith Anthony J.
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