 |
| Titel |
Distribution profile of magnentic field By component in magnetotail current sheets with guide field |
| VerfasserIn |
Zhaojin Rong, Weixing Wan, Chao Shen, Xinlin Li, Malcolm Dunlop, Anatoli Petrukovich, Lin-ni Hau, Elizabeth Lucek, Henri Rème |
| Konferenz |
EGU General Assembly 2011
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250047930
|
|
|
|
|
|
| Zusammenfassung |
| The strong magnetic field By component (in GSM coordinates) has been increasingly noticed
to play an important role as a guide field in the dynamics of the tail current sheet (CS). The
distribution profile of strong By components in tail CS, however, is not well known. In
the present work, by using the simultaneous multi-point observations of Cluster
satellites, the distribution profile of theBycomponent in the tail current sheets (with
guide field) has been explored, through detailed cases study as well as a statistical
study. It is discovered that around the midnight meridian, the strength of the By
component, i.e.|By|, enhances at the center of the CS relative to that in the CS boundaries
and lobes, and forms a north-south symmetric distribution about the center of CS.
Generally, however, for the CS with strong guide field at the non-midnight meridian, the
distribution profile of |By| becomes north-south asymmetric, the By component in
the northern side of the CS is found to be either stronger or weaker than that in
the counterpart southern side of the CS. By considering the modulation of the tail
flaring magnetic field, we propose an interpretation to account for the variation
of the By-distribution profile with magnetic local time. This is supported by the
statistical survey. These results would offer an observation basis for the further studies. |
|
|
|
|
|
|