Cluster spacecraft observations of a ULF wave enhanced by Space Plasma Exploration by Active Radar (SPEAR)

Badman, S. V. and Wright, D. M. and Clausen, L. B. N. and Fear, R. C. and Robinson, T. R. and Yeoman, T. K. (2009) Cluster spacecraft observations of a ULF wave enhanced by Space Plasma Exploration by Active Radar (SPEAR). Annales Geophysicae, 27 (9). pp. 3591-3599. ISSN 0992-7689

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Abstract

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.

Item Type: Journal Article
Journal or Publication Title: Annales Geophysicae
Additional Information: © Author(s) 2009. This work is distributed under the Creative Commons Attribution 3.0 License.
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/1900/1912
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 67091
Deposited By: ep_importer_pure
Deposited On: 11 Oct 2013 08:42
Refereed?: Yes
Published?: Published
Last Modified: 22 Feb 2020 02:19
URI: https://eprints.lancs.ac.uk/id/eprint/67091

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