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| Titel |
Field-Aligned Currents in the Cusp: Research Opportunities with Swarm Mission |
| VerfasserIn |
Yulia Bogdanova, Malcolm Dunlop, Chao Shen, Hermann Lühr, Patricia Ritter, Berndt Klecker, Andrew Fazakerley, Jinbin Cao |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250092448
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| Publikation (Nr.) |
 EGU/EGU2014-6797.pdf |
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| Zusammenfassung |
| Field-aligned currents (FACs) play a fundamental role in the solar wind energy and plasma transfer to the magnetosphere and ionosphere, and the spatial and temporal variations of various FAC systems are under active investigation. Here we present observations of the field-aligned currents in the mid-altitude cusp by 4 Cluster spacecraft and discuss their filamentary structure and variability for different IMF conditions and at different multi-spacecraft separation scales. In addition, we show and analyse an event with the cusp field-aligned currents observed by CHAMP as an example of future FAC observations from the Swarm mission. We then discuss the opportunities for studying cusp field-aligned currents using the data coming from Swarm mission, which will provide multi-point measurements of the magnetic field and plasma at low polar orbit. We will consider how such observations can enhance our knowledge of filamentary structure and time variability of cusp field-aligned currents and what type of conjunctions between Cluster and Swarm would facilitate research into the cusp and Region 1 current systems. |
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