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- Title
A Pressure Pulse‐Driven Transient Magnetospheric Event.
- Authors
Sibeck, D. G.; Lee, S.‐H.
- Abstract
Bursty reconnection models predict that flux transfer events (FTEs) moving along the magnetopause launch fast mode compressional waves into the magnetosheath that push the bow shock outward. By contrast, increases in the solar wind density striking the bow shock should push that boundary inward and launch fast mode compressional waves that propagate across the magnetosheath, drive waves on the magnetopause, and generate transient events in the outer magnetosphere. Multipoint ACE, Wind, THEMIS, and GOES‐11/12 solar wind, bow shock, and magnetospheric observations on 14 October 2008 provide direct evidence for solar wind pressure pulses producing a large amplitude indentation with crater FTE‐like properties on the magnetopause. Key Points: Inward bow shock motion and a northward IMF orientation accompanied a large crater flux transfer event (FTE) seen by THEMIS‐CThe FTE moved dawnward and southward across the magnetopause, consistent with the observed orientation of IMF discontinuitiesThe properties of the crater FTE are more consistent with the pressure pulse model than with bursty reconnection
- Subjects
LONGITUDINAL waves; MAGNETOPAUSE; SOLAR wind; WIND pressure; MAGNETOSPHERE
- Publication
Journal of Geophysical Research. Space Physics, 2024, Vol 129, Issue 6, p1
- ISSN
2169-9380
- Publication type
Article
- DOI
10.1029/2024JA032468