Mapping travelling convection vortex events with respect to energetic particle boundaries

International audience Thirteen events of high-latitude ionospheric travelling convection vortices during very quiet conditions were identified in the Greenland magnetometer data during 1990 and 1991. The latitudes of the vortex centres for these events are compared to the energetic electron trappin...

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Bibliographic Details
Main Authors: Moretto, T., Yahnin, A.
Other Authors: Solar-Terrestrial Physics Division Copenhagen, Danish Meteorological Institute (DMI), Polar Geophysical Institute of Russian Academy of Sciences (PGI), Russian Academy of Sciences Moscow (RAS)
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 1998
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Online Access:https://hal.science/hal-00316420
https://hal.science/hal-00316420/document
https://hal.science/hal-00316420/file/angeo-16-891-1998.pdf
Description
Summary:International audience Thirteen events of high-latitude ionospheric travelling convection vortices during very quiet conditions were identified in the Greenland magnetometer data during 1990 and 1991. The latitudes of the vortex centres for these events are compared to the energetic electron trapping boundaries as identified by the particle measurements of the NOAA 10 satellite. In addition, for all events at least one close DMSP overpass was available. All but one of the 13 cases agree to an exceptional degree that: the TCV centres are located within the region of trapped, high energy electrons close to the trapping boundary for the population of electrons with energy greater than >100 keV. Correspondingly, from the DMSP data they are located within the region of plasmasheet-type precipitation close to the CPS/BPS precipitation boundary. That is, the TCV centres map to deep inside the magnetosphere and not to the magnetopause.