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Extended SuperDARN and IMAGE observations for northward IMF: Evidence for dual lobe reconnection
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2008 (English)In: Journal of Geophysical Research, ISSN 0148-0227, Vol. 113, no A2, A02204- p.Article in journal (Refereed) Published
Abstract [en]

We present observations of ionospheric convection in the Northern Hemisphere made by the SuperDARN radar network during a 3 h period on 3 December 2001. The interplanetary magnetic field (IMF) during the time of observations is predominately northward with the By component changing from positive to slightly negative. During this period Cluster is skimming the southern high latitude dusk magnetopause and reveals that reconnection is going on quasi-continuously with the reconnection site being most of the time tailward of the southern cusp and always near the satellite location (Retino, et al., 2005). Detailed analysis of the three dimensional distribution function indicates that Cluster samples magnetosheath lines connected with geomagnetic field lines tailward of the cusps in both hemispheres (Bavassano Cattaneo et al., 2006). The evolution of the ionospheric convection measured by SuperDARN, together with IMAGE FUV observations of aurorae and DMSP particle precipitation data, confirms Cluster observations and shows that simultaneous reconnection poleward of both the northern and southern cusps occurs at a variable rate on the dusk part of the magnetosphere when the IMF clock angle is small.

Place, publisher, year, edition, pages
2008. Vol. 113, no A2, A02204- p.
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-149888DOI: 10.1029/2007JA012466ISI: 000253068300003OAI: oai:DiVA.org:uu-149888DiVA: diva2:405884
Available from: 2011-03-24 Created: 2011-03-24 Last updated: 2011-03-24Bibliographically approved

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Swedish Institute of Space Physics, Uppsala Division
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