eprintid: 169507
rev_number: 36
eprint_status: archive
userid: 608
dir: disk0/00/16/95/07
datestamp: 2010-11-02 22:52:31
lastmod: 2021-11-07 23:49:09
status_changed: 2010-11-02 22:52:31
type: article
metadata_visibility: show
item_issues_count: 0
creators_name: Forsyth, C
creators_name: Lester, M
creators_name: Cowley, SWH
creators_name: Dandouras, I
creators_name: Fazakerley, AN
creators_name: Fear, RC
creators_name: Frey, HU
creators_name: Grocott, A
creators_name: Kadokura, A
creators_name: Lucek, E
creators_name: Reme, H
creators_name: Milan, SE
creators_name: Watermann, J
title: Observed tail current systems associated with bursty bulk flows and auroral streamers during a period of multiple substorms
ispublished: pub
divisions: UCL
divisions: B04
divisions: C06
divisions: F63
keywords: Magnetosphere, Auroral phenomena, Current systems, Storms and substorms, Interplanetary magnetic-field, Hall conductance distribution, Advanced composition explorer, Plasma sheet, Image spacecraft, Electric-field, Ionosphere, Model, Magnetosphere, Convection
note: © European Geosciences Union 2008
abstract: We present a multi-instrument study of a substorm bursty bulk flow (BBF) and auroral streamer. During a substorm on 25 August 2003, which was one of a series of substorms that occurred between 00:00 and 05:00 UT, the Cluster spacecraft encountered a BBF event travelling Earthwards and duskwards with a velocity of similar to 500 km s(-1) some nine minutes after the onset of the substorm. Coincident with this event the IMAGE spacecraft detected an auroral streamer in the substorm auroral bulge in the Southern Hemisphere near the footpoints of the Cluster spacecraft. Using FluxGate Magnetometer (FGM) data from the four Cluster spacecraft, we determine the field-aligned currents in the BBF, using the curlometer technique, to have been similar to 5 mA km(2). When projected into the ionosphere, these currents give ionospheric field-aligned currents of similar to 18 A km(2), which is comparable with previously observed ionospheric field-aligned currents associated with BBFs and auroral streamers. The observations of the BBF are consistent with the plasma 'bubble' model of Chen and Wolf (1993). Furthermore, we show that the observations of the BBF are consistent with the creation of the BBF by the reconnection of open field lines Earthward of a substorm associated near-Earth neutral line.
date: 2008
publisher: COPERNICUS PUBLICATIONS
official_url: http://dx.doi.org/10.5194/angeo-26-167-2008
vfaculties: VMPS
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
article_type_text: Article
verified: verified_manual
elements_source: Web of Science
elements_id: 103137
doi: 10.5194/angeo-26-167-2008
language_elements: EN
lyricists_name: Fazakerley, Andrew
lyricists_name: Forsyth, Colin
lyricists_id: ANFAZ75
lyricists_id: CFORS88
full_text_status: public
publication: Annales Geophysicae
volume: 26
number: 1
pagerange: 167 - 184
issn: 0992-7689
citation:        Forsyth, C;    Lester, M;    Cowley, SWH;    Dandouras, I;    Fazakerley, AN;    Fear, RC;    Frey, HU;                         ... Watermann, J; + view all <#>        Forsyth, C;  Lester, M;  Cowley, SWH;  Dandouras, I;  Fazakerley, AN;  Fear, RC;  Frey, HU;  Grocott, A;  Kadokura, A;  Lucek, E;  Reme, H;  Milan, SE;  Watermann, J;   - view fewer <#>    (2008)    Observed tail current systems associated with bursty bulk flows and auroral streamers during a period of multiple substorms.                   Annales Geophysicae , 26  (1)   167 - 184.    10.5194/angeo-26-167-2008 <https://doi.org/10.5194/angeo-26-167-2008>.       Green open access   
 
document_url: https://discovery-pp.ucl.ac.uk/id/eprint/169507/1/angeo-26-167-2008.pdf