Polar cap flow channel events: spontaneous and driven responses

• Published in: Annales Geophysicae
• Main Authors: P. E. Sandholt, Y. Andalsvik, C. J. Farrugia
• Format: Article in Journal/Newspaper
• Language: English
• Published: Copernicus Publications 2010
• Subjects: Science; Q; Physics; QC1-999; Geophysics. Cosmic physics; QC801-809; Svalbard; Birkeland
• Online Access: https://doi.org/10.5194/angeo-28-2015-2010; https://doaj.org/article/075b2da6b2d0473086e6f6d306b3e59b

We present two case studies of specific flow channel events appearing at the dusk and/or dawn polar cap boundary during passage at Earth of interplanetary (IP) coronal mass ejections (ICMEs) on 10 January and 25 July 2004. The channels of enhanced (>1 km/s) antisunward convection are documented b...