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| Titel |
Cluster spacecraft observations of a ULF wave enhanced by Space Plasma Exploration by Active Radar (SPEAR) |
| VerfasserIn |
S. V. Badman, D. M. Wright, L. B. N. Clausen, R. C. Fear, T. R. Robinson, T. K. Yeoman |
| 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 ; 27, no. 9 ; Nr. 27, no. 9 (2009-09-28), S.3591-3599 |
| Datensatznummer |
250016653
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| Publikation (Nr.) |
 copernicus.org/angeo-27-3591-2009.pdf |
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| Zusammenfassung |
| Space Plasma Exploration by Active Radar (SPEAR) is a high-latitude
ionospheric heating facility capable of exciting ULF waves on local magnetic
field lines. We examine an interval from 1 February 2006 when SPEAR was
transmitting a 1 Hz modulation signal with a 10 min on-off cycle. Ground
magnetometer data indicated that SPEAR modulated currents in the local
ionosphere at 1 Hz, and enhanced a natural field line resonance with a 10 min
period. During this interval the Cluster spacecraft passed over the
heater site. Signatures of the SPEAR-enhanced field line resonance were
present in the magnetic field data measured by the magnetometer on-board
Cluster-2. These are the first joint ground- and space-based detections
of field line tagging by SPEAR. |
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