MAPPING TRAVELING CONVECTION VORTEX EVENTS WITH RESPECT TO ENERGETIC PARTICLE BOUNDARIES

Thirteen events of high-latitude ionospheric travelling convection vor tices during very quiet conditions were identified in the Greenland ma gnetometer data during 1990 and 1991. The latitudes of the vortex cent res for these events are compared to the energetic electron trapping b oundaries as identified by the particle measurements of the NOAA 10 sa tellite. In addition, for all events at least one close DMSP overpass was available. All but one of the 13 cases agree to an exceptional deg ree that: the TCV centres are located within the region of trapped, hi gh 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 p recipitation close to the CPS/BPS precipitation boundary. That is, the TCV centres map to deep inside the magnetosphere and not to the magne topause.