Two spacecraft observations of plasmoid/TCR propagation in the magnetotail

Details Two spacecraft observations of plasmoid/TCR propagation in the magnetotail Two spacecraft observations of plasmoid/TCR propagation in the magnetotail

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsm31a0752i&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SM31A-0752

Physics

2736 Magnetosphere/Ionosphere Interactions, 2744 Magnetotail, 2764 Plasma Sheet, 2788 Storms And Substorms, 7835 Magnetic Reconnection

Scientific paper

The downtail velocities of plasmoids/traveling compression regions (TCRs) were estimated from the time delay of their arrival at two spacecraft at different distances down the tail. We identified 25 plasmoids/TCRs from September 1993 to June 2000 by requiring that Geotail and either IMP8 or Wind simultaneously observed plasmoids/TCRs. The average plasmoid/TCR velocities were 400 km/s at 30 Re down the tail and 800 km/s at 100 Re. This result supports the previous finding that plasmoids accelerate inside 80 Re down the tail. We further compared each obtained propagation velocity with the velocity observed by a Geotail plasma instrument. The differences of the velocities were typically within 200 km/s for plasmoids themselves, while the velocities of post-plasmoid flows were sometimes much faster.

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