Physics
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsm11b0819s&link_type=abstract
American Geophysical Union, Fall Meeting 2001, abstract #SM11B-0819
Physics
2700 Magnetospheric Physics, 2704 Auroral Phenomena (2407), 2764 Plasma Sheet
Scientific paper
Trains of Pi2 pulsations have been observed at low latitudes during extremely quiet magnetospheric and solar wind conditions. Poleward boundary intensifications (PBIs), which have been inferred using ground magnetic field data, are observed simultaneously with a ~30 min repetition rate. There is also an excellent correlation with energetic particle enhancements at X=-15 Re in the tail plasma sheet. This association demonstrates the large-scale nature of the magnetosphere-ionosphere disturbance with gives rise to PBIs and shows that the disturbance may have important effects on energetic particles within the plasma sheet. It also shows for the first time that PBIs are associated with clearly observable Pi2 pulsations at low latitudes. Our observations are also consistent with the possibility that PBIs are part of a large-scale magnetospheric oscillation with ~30 min period.
Lyons Larry R.
Sutcliffe Peter R.
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