Comparison of Dynamically Modeled EMIC Wave Activity with in situ Observations: Implications for Wave Growth Assumptions
Abstract
We employed a 3D test particle simulation and a global magnetohydrodynamic code to compute Electromagnetic Ion-Cyclotron (EMIC) wave saturation amplitudes from the linear theory of wave growth. This provided a global dynamical picture of EMIC wave activity for a geomagnetic storm observed on 29 June 2007 by THEMIS (Time History of Events and Macroscale Interactions during Substorms) spacecraft. Comparison of these amplitudes with values derived from on-board plasma measurements suggest re-evaluation of EMIC wave growth assumptions is necessary. We will present these comparisons along with analysis regarding the applicablity of the linear theory of wave growth during this event.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2016
- Bibcode:
- 2016AGUFMSM11C2161M
- Keywords:
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- 7949 Ionospheric storms;
- SPACE WEATHERDE: 7954 Magnetic storms;
- SPACE WEATHERDE: 7974 Solar effects;
- SPACE WEATHERDE: 7984 Space radiation environment;
- SPACE WEATHER