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Relativistic electron flux dropouts in the outer radiation belt associated with corotating interaction regions
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| Zeitschriftentitel: | Journal of Geophysical Research: Space Physics |
|---|---|
| Personen und Körperschaften: | , , , , |
| In: | Journal of Geophysical Research: Space Physics, 120, 2015, 9, S. 7404-7415 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
American Geophysical Union (AGU)
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| Schlagwörter: |
| author_facet |
Yuan, C.‐J. Zong, Q.‐G. Wan, W.‐X. Zhang, H. Du, A.‐M. Yuan, C.‐J. Zong, Q.‐G. Wan, W.‐X. Zhang, H. Du, A.‐M. |
|---|---|
| author |
Yuan, C.‐J. Zong, Q.‐G. Wan, W.‐X. Zhang, H. Du, A.‐M. |
| spellingShingle |
Yuan, C.‐J. Zong, Q.‐G. Wan, W.‐X. Zhang, H. Du, A.‐M. Journal of Geophysical Research: Space Physics Relativistic electron flux dropouts in the outer radiation belt associated with corotating interaction regions Space and Planetary Science Geophysics |
| author_sort |
yuan, c.‐j. |
| spelling |
Yuan, C.‐J. Zong, Q.‐G. Wan, W.‐X. Zhang, H. Du, A.‐M. 2169-9380 2169-9402 American Geophysical Union (AGU) Space and Planetary Science Geophysics http://dx.doi.org/10.1002/2015ja021003 <jats:title>Abstract</jats:title><jats:p>Understanding how the relativistic electron fluxes drop out in the outer radiation belt under different conditions is of great importance. To investigate which mechanisms may affect the dropouts under different solar wind conditions, 1.5–6.0 MeV electron flux dropout events associated with 223 corotating interaction regions (CIRs) from 1994 to 2003 are studied using the observations of Solar, Anomalous, Magnetospheric Particle Explorer satellite. According to the superposed epoch analysis, it is found that high solar wind dynamic pressure with the peak median value of about 7 nPa is corresponding to the dropout of the median of the radiation belt content (RBC) index to 20% of the level before stream interface arrival, whereas low dynamic pressure with the peak median value of about 3 nPa is related to the dropout of the median of RBC index to 40% of the level before stream interface arrival. Furthermore, the influences of Russell‐McPherron effect with respect to interplanetary magnetic field orientation on dropouts are considered. It is pointed out that under positive Russell‐McPherron effect (+RM effect) condition, the median of RBC index can drop to 23% of the level before stream interface arrival, while for negative Russell‐McPherron effect (−RM effect) events, the median of RBC index only drops to 37% of the level before stream interface arrival. From the evolution of phase space density profiles, the effect of +RM on dropouts can be through nonadiabatic loss.</jats:p> Relativistic electron flux dropouts in the outer radiation belt associated with corotating interaction regions Journal of Geophysical Research: Space Physics |
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10.1002/2015ja021003 |
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| title |
Relativistic electron flux dropouts in the outer radiation belt associated with corotating interaction regions |
| title_unstemmed |
Relativistic electron flux dropouts in the outer radiation belt associated with corotating interaction regions |
| title_full |
Relativistic electron flux dropouts in the outer radiation belt associated with corotating interaction regions |
| title_fullStr |
Relativistic electron flux dropouts in the outer radiation belt associated with corotating interaction regions |
| title_full_unstemmed |
Relativistic electron flux dropouts in the outer radiation belt associated with corotating interaction regions |
| title_short |
Relativistic electron flux dropouts in the outer radiation belt associated with corotating interaction regions |
| title_sort |
relativistic electron flux dropouts in the outer radiation belt associated with corotating interaction regions |
| topic |
Space and Planetary Science Geophysics |
| url |
http://dx.doi.org/10.1002/2015ja021003 |
| publishDate |
2015 |
| physical |
7404-7415 |
| description |
<jats:title>Abstract</jats:title><jats:p>Understanding how the relativistic electron fluxes drop out in the outer radiation belt under different conditions is of great importance. To investigate which mechanisms may affect the dropouts under different solar wind conditions, 1.5–6.0 MeV electron flux dropout events associated with 223 corotating interaction regions (CIRs) from 1994 to 2003 are studied using the observations of Solar, Anomalous, Magnetospheric Particle Explorer satellite. According to the superposed epoch analysis, it is found that high solar wind dynamic pressure with the peak median value of about 7 nPa is corresponding to the dropout of the median of the radiation belt content (RBC) index to 20% of the level before stream interface arrival, whereas low dynamic pressure with the peak median value of about 3 nPa is related to the dropout of the median of RBC index to 40% of the level before stream interface arrival. Furthermore, the influences of Russell‐McPherron effect with respect to interplanetary magnetic field orientation on dropouts are considered. It is pointed out that under positive Russell‐McPherron effect (+RM effect) condition, the median of RBC index can drop to 23% of the level before stream interface arrival, while for negative Russell‐McPherron effect (−RM effect) events, the median of RBC index only drops to 37% of the level before stream interface arrival. From the evolution of phase space density profiles, the effect of +RM on dropouts can be through nonadiabatic loss.</jats:p> |
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| author | Yuan, C.‐J., Zong, Q.‐G., Wan, W.‐X., Zhang, H., Du, A.‐M. |
| author_facet | Yuan, C.‐J., Zong, Q.‐G., Wan, W.‐X., Zhang, H., Du, A.‐M., Yuan, C.‐J., Zong, Q.‐G., Wan, W.‐X., Zhang, H., Du, A.‐M. |
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| description | <jats:title>Abstract</jats:title><jats:p>Understanding how the relativistic electron fluxes drop out in the outer radiation belt under different conditions is of great importance. To investigate which mechanisms may affect the dropouts under different solar wind conditions, 1.5–6.0 MeV electron flux dropout events associated with 223 corotating interaction regions (CIRs) from 1994 to 2003 are studied using the observations of Solar, Anomalous, Magnetospheric Particle Explorer satellite. According to the superposed epoch analysis, it is found that high solar wind dynamic pressure with the peak median value of about 7 nPa is corresponding to the dropout of the median of the radiation belt content (RBC) index to 20% of the level before stream interface arrival, whereas low dynamic pressure with the peak median value of about 3 nPa is related to the dropout of the median of RBC index to 40% of the level before stream interface arrival. Furthermore, the influences of Russell‐McPherron effect with respect to interplanetary magnetic field orientation on dropouts are considered. It is pointed out that under positive Russell‐McPherron effect (+RM effect) condition, the median of RBC index can drop to 23% of the level before stream interface arrival, while for negative Russell‐McPherron effect (−RM effect) events, the median of RBC index only drops to 37% of the level before stream interface arrival. From the evolution of phase space density profiles, the effect of +RM on dropouts can be through nonadiabatic loss.</jats:p> |
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| imprint_str_mv | American Geophysical Union (AGU), 2015 |
| institution | DE-Ch1, DE-L229, DE-D275, DE-Bn3, DE-Brt1, DE-Zwi2, DE-D161, DE-Zi4, DE-Gla1, DE-15, DE-Pl11, DE-Rs1, DE-14, DE-105 |
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| physical | 7404-7415 |
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| spelling | Yuan, C.‐J. Zong, Q.‐G. Wan, W.‐X. Zhang, H. Du, A.‐M. 2169-9380 2169-9402 American Geophysical Union (AGU) Space and Planetary Science Geophysics http://dx.doi.org/10.1002/2015ja021003 <jats:title>Abstract</jats:title><jats:p>Understanding how the relativistic electron fluxes drop out in the outer radiation belt under different conditions is of great importance. To investigate which mechanisms may affect the dropouts under different solar wind conditions, 1.5–6.0 MeV electron flux dropout events associated with 223 corotating interaction regions (CIRs) from 1994 to 2003 are studied using the observations of Solar, Anomalous, Magnetospheric Particle Explorer satellite. According to the superposed epoch analysis, it is found that high solar wind dynamic pressure with the peak median value of about 7 nPa is corresponding to the dropout of the median of the radiation belt content (RBC) index to 20% of the level before stream interface arrival, whereas low dynamic pressure with the peak median value of about 3 nPa is related to the dropout of the median of RBC index to 40% of the level before stream interface arrival. Furthermore, the influences of Russell‐McPherron effect with respect to interplanetary magnetic field orientation on dropouts are considered. It is pointed out that under positive Russell‐McPherron effect (+RM effect) condition, the median of RBC index can drop to 23% of the level before stream interface arrival, while for negative Russell‐McPherron effect (−RM effect) events, the median of RBC index only drops to 37% of the level before stream interface arrival. From the evolution of phase space density profiles, the effect of +RM on dropouts can be through nonadiabatic loss.</jats:p> Relativistic electron flux dropouts in the outer radiation belt associated with corotating interaction regions Journal of Geophysical Research: Space Physics |
| spellingShingle | Yuan, C.‐J., Zong, Q.‐G., Wan, W.‐X., Zhang, H., Du, A.‐M., Journal of Geophysical Research: Space Physics, Relativistic electron flux dropouts in the outer radiation belt associated with corotating interaction regions, Space and Planetary Science, Geophysics |
| title | Relativistic electron flux dropouts in the outer radiation belt associated with corotating interaction regions |
| title_full | Relativistic electron flux dropouts in the outer radiation belt associated with corotating interaction regions |
| title_fullStr | Relativistic electron flux dropouts in the outer radiation belt associated with corotating interaction regions |
| title_full_unstemmed | Relativistic electron flux dropouts in the outer radiation belt associated with corotating interaction regions |
| title_short | Relativistic electron flux dropouts in the outer radiation belt associated with corotating interaction regions |
| title_sort | relativistic electron flux dropouts in the outer radiation belt associated with corotating interaction regions |
| title_unstemmed | Relativistic electron flux dropouts in the outer radiation belt associated with corotating interaction regions |
| topic | Space and Planetary Science, Geophysics |
| url | http://dx.doi.org/10.1002/2015ja021003 |