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| Titel |
Electron Acceleration in the radiation belts: wave obliquity effects for Kp < 5 and modifications of the particle distribution for Kp > 5 |
| VerfasserIn |
Didier Mourenas, Anton Artemyev, Oleksiy Agapitov, Vladimir Krasnoselskikh, Forrest Mozer |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250101969
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| Publikation (Nr.) |
 EGU/EGU2015-1465.pdf |
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| Zusammenfassung |
| Electron scattering and energization in the outer radiation belt at L = 5 is examined. Based on new parameterizations of chorus obtained from 11 years of Cluster data, electron lifetimes and energization rates are shown to vary with Kp or Dst as a result of simultaneous but adverse variations of the latitudinal distribution of chorus wave intensity and wave obliquity with geomagnetic activity. Non-monotonous variations are revealed during moderate activity. During strong storms, the energization of the particle distribution is compared with a simplified model of energy broadening, allowing to recover simulation results and further suggesting a new way of inferring MLT-averaged chorus wave amplitudes (or alternatively, plasma density) from particle measurements performed at one point in the equatorial plane. |
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