High spatial and temporal resolution observations of the ionospheric cusp

Pinnock, M.; Rodger, A. S.; Dudeney, J. R.; Rich, F.; Baker, K. B.. 1995 High spatial and temporal resolution observations of the ionospheric cusp. Annales Geophysicae, 13 (9). 919-925.

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The Halley PACE HF radar has been operated in a new mode to provide very high time (10 s) and space (15 km) resolution measurements of the iono-spheric signatures of the cusp and the low-latitude boundary layer. The first data show that the iono-spheric signature of flux transfer events occur up to 300 km equatorward of regions showing the HF characteristics of the ionospheric cusp. Whilst larger flux transfer events are seen, on average, every 7 min, many much smaller and short-duration events have been identified. On one occasion DMSP data have been used to show that at least four flux transfer events are occurring simultaneously at the edge of the cusp over 2 h of MLT. There is strong, but not conclusive evidence, that reconnection at the magnetopause is both intermittent and patchy. These data also suggest that flux transfer events can be a significant contributor to the cross-polar cap potential.

Item Type: Publication - Article
Digital Object Identifier (DOI):
Programmes: BAS Programmes > Pre 2000 programme
ISSN: 1432-0576
Date made live: 10 Jan 2017 14:56 +0 (UTC)

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