 |
| Titel |
Ion drift simulation of sudden appearance of sub-keV structured ions in the inner magnetosphere |
| VerfasserIn |
M. Yamauchi, Y. Ebihara, H. Nilsson, I. Dandouras |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
0992-7689
|
| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 32, no. 2 ; Nr. 32, no. 2 (2014-02-12), S.83-90 |
| Datensatznummer |
250121022
|
| Publikation (Nr.) |
 copernicus.org/angeo-32-83-2014.pdf |
|
|
|
|
|
| Zusammenfassung |
| Energy–latitude dispersed structured sub-keV ions in the inner magnetosphere
often show significant development or intensification (by more than factor of
3) within 1–2 h near noon or afternoon where the azimuthal ion drift
velocity at the sub-keV range is expected to be near zero. To examine whether
such sudden appearances in the dayside can be explained by the drift motion
of ions that are formed during substorm-related injections, we numerically
simulated two such examples, one at noon and the other in the afternoon,
based on the ion drift model. For both cases, the ion drift model with finite
duration of proton source in the nightside can explain the observed large
inbound–outbound differences in the sub-keV proton population without any
new sources. Ion drift motion can thus cause rapid changes of complicated ion
populations, at remote places from the source a long time after the substorm
activities. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|