Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorDraper, N. C.-
dc.contributor.authorLester, Mark-
dc.contributor.authorCowley, S. W. H.-
dc.contributor.authorWild, J. A.-
dc.contributor.authorMilan, Steve E.-
dc.contributor.authorProvan, Gabrielle P.-
dc.contributor.authorGrocott, Adrian-
dc.contributor.authorFazakerley, A. N.-
dc.contributor.authorLahiff, A. D.-
dc.contributor.authorDavies, J. A.-
dc.contributor.authorBosqued, J-M.-
dc.contributor.authorDewhurst, J. P.-
dc.contributor.authorNakamura, R.-
dc.contributor.authorOwen, C. J.-
dc.contributor.authorWatermann, J. F.-
dc.contributor.authorHenderson, M. G.-
dc.contributor.authorSinger, H. J.-
dc.contributor.authorDonovan, E.-
dc.identifier.citationAnnales Geophysicae, 2005, 23 (12), pp. 3667-3683.en_GB
dc.description.abstractWe present data from both ground- and space-based instruments for a substorm event which occurred on 5 October 2002, with an expansion phase onset time of 02:50 UT determined from the ground magnetometer data. During this substorm, the Cluster spacecraft were located around 15 RE downtail, 8 RE from midnight in the pre-midnight sector and just 2 RE above the equatorial plane (in GSM coordinates). At expansion phase onset the Cluster spacecraft were located in the plasma sheet, tailward of a near-Earth neutral line and detected a significant time delay of 6 min between the tail field Bz component becoming negative and the subsequent detection of Earthward flows. This is explained by the formation of a tailward-directed travelling compression region initially Earthward of the spacecraft; 7 min later the Cluster spacecraft entered the plasma sheet boundary layer; they remained in and close to the plasma sheet boundary layer for around 15 min before exiting to the lobe. The spacecraft then re-entered the plasma sheet 30 min after onset. Earthward then tailward directed currents detected in the plasma sheet boundary layer after onset indicate that the Cluster spacecraft encountered the dawnward and duskward portions of the reconnection flow associated current system with Region 1 sense, respectively. The reconnection site and current system were initially skewed towards the pre-midnight sector, consistent with previous observations that found the majority of substorm onsets located in this sector. At later times the reconnection site and current system had moved towards dawn, to be located more centrally in the midnight sector.en_GB
dc.publisherCopernicus Publications on behalf of the European Geosciences Union (EGU)en_GB
dc.rightsThis paper was published as Annales Geophysicae, 2005, 23 (12), pp. 3667-3683. It is also available from © Author(s) 2005. This work is distributed under the Creative Commons Attribution 3.0 License.-
dc.titleCluster magnetotail observations of a tailward-travelling plasmoid at substorm expansion phase onset and field aligned currents in the plasma sheet boundary layeren_GB
dc.relation.deptRadio and Space Plasma Physics-
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

Files in This Item:
File Description SizeFormat 
Cluster magnetotail observations of a tailward-travelling ....pdf2.92 MBAdobe PDFView/Open

Items in LRA are protected by copyright, with all rights reserved, unless otherwise indicated.