 |
| Titel |
Global manifestations of a substorm onset observed by a multi-satellite and ground station network |
| VerfasserIn |
H. Wang, S. Y. Ma, H. Lühr, Z. X. Liu, Z. Y. Pu, C. P. Escoubet, H. U. Frey, H. Rème, P. Ritter |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
0992-7689
|
| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 24, no. 12 ; Nr. 24, no. 12 (2006-12-21), S.3491-3496 |
| Datensatznummer |
250015720
|
| Publikation (Nr.) |
 copernicus.org/angeo-24-3491-2006.pdf |
|
|
|
|
|
| Zusammenfassung |
| With a favorable constellation of spacecraft and ground stations,
a study is made on the global manifestations of a substorm onset. The
onset occurred simultaneously and conjugately in both hemispheres,
confirmed by observations of the auroral breakup from IMAGE
FUV-WIC and a sudden intensification of a westward electrojet from
ground-based magnetometers. Concurrently with the onset,
field-aligned and Hall currents in the auroral ionosphere are
observed by CHAMP, which are consistent with the signature of a
Harang discontinuity. Immediately after the onset a magnetic field
dipolarization is clearly observed by Double Star TC-1, located
near the central magnetotail and subsequently, by the Cluster
quartet. The observations can be explained by a dawnward
propagation of the substorm current wedge at a speed of about 300 km/s. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|