Fast flow bursts and auroral activations

R Nakamura, W Baumjohann, VA Sergeev, M Kubyshkina, M Brittnacher, G Parks, K Lion, T Mukai

Research outputpeer-review

Abstract

Flow burst events with a dawn-to-dusk electric field exceeding 2 mV/m and with a duration of less than 10 min observed by Geotail are compared with auroral data from the Polar ultraviolet imager. Temporal and spatial relationships between the flow bursts and the aurora are examined. It is shown that all the flow bursts correspond either to a localized auroral intensification associated with small poleward expansions and pseudobreakups or to activations starting at poleward edge of the expanded auroral oval, including auroral streamers, that develop equatorward toward the foot point of the satellite. Although most of these auroral activations precede the flow bursts by a few minutes, the activations that break up near the foot point of the satellite start within +/-1 min of the flow burst onset.

Original languageEnglish
Title of host publicationPROCEEDINGS OF THE FIFTH INTERNATIONAL CONFERENCE ON SUBSTORMS
EditorsA Wilson
PublisherESTEC
Pages319-322
Number of pages4
ISBN (Print)9789290927723
Publication statusPublished - 2000
Event5th International Conference on Substorms - ST PETERSBURG
Duration: 16 May 200020 May 2000

Publication series

NameESA SPECIAL PUBLICATIONS
PublisherESA PUBLICATIONS DIVISION C/O ESTEC
Volume443
ISSN (Print)0379-6566

Conference

Conference5th International Conference on Substorms
CityST PETERSBURG
Period16/05/0020/05/00

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