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| Titel |
Recent highlights from Cluster, the first 3-D magnetospheric mission |
| VerfasserIn |
C. P. Escoubet, A. Masson, H. Laakso  , M. L. Goldstein |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 33, no. 10 ; Nr. 33, no. 10 (2015-10-02), S.1221-1235 |
| Datensatznummer |
250121254
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| Publikation (Nr.) |
 copernicus.org/angeo-33-1221-2015.pdf |
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| Zusammenfassung |
| The Cluster mission has been operated successfully for 14 years. During this
time period, the evolution of the orbit has enabled Cluster to sample many
more magnetospheric regions than was initially anticipated. So far, the
separation of the Cluster spacecraft has been changed more than 30 times and
has ranged from a few kilometres up to 36 000 km. These orbital changes have
enabled the science team to address a wide variety of scientific objectives
in key regions of Earth's geospace environment: the solar wind and bow
shock, the magnetopause, polar cusps, magnetotail, plasmasphere and the
auroral acceleration region. Recent results have shed new light on solar
wind turbulence. They showed that the magnetosheath can be asymmetric under
low Mach number and that it can contain density enhancement that may affect
the magnetosphere. The magnetopause was found to be thinner and to have a
higher current density on the duskside than on the dawnside. New methods
have been used to obtain characteristic of the magnetotail current sheet and
high-temporal-resolution measurements of electron pitch angle within flux transfer events (FTEs).
Plasmaspheric wind has been discovered, and the refilling of the plasmasphere
was observed for the first time over a very wide range of L shells. New
models of global electric and magnetic fields of the magnetosphere have been
obtained where Cluster, due to its polar orbit, has been essential. Finally,
magnetic reconnection was viewed for the first time with high-resolution
wave and electron measurements and acceleration of plasma was observed
during times of varying rate of magnetic reconnection. The analysis of
Cluster data was facilitated by the creation of the Cluster Science Data
System (CSDS) and the Cluster Science Archive (CSA). Those systems were
implemented to provide, for the first time for a plasma physics mission, a
long-term public archive of all calibrated high-resolution data from all
instruments. |
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