Observation of dusk electric field in low-latitude boundary layer
Abstract
A big magnetic storm with Dst of order --472 nT occurred on November 20 2003 Cluster spacecrafts passed through the magnetopause at about 16 13 20 on the dusk flank and crossed low-latitude boundary layer LLBL between 14 40 00 and 16 13 20 The dusk electric field component E dusk was observed in the LLBL magnetopause and magnetosheath The E dusk is about order of 0 -- 70 mV m during big magnetic storm but the E dusk is about order of -3 -- 3 mV m during quiet time The E dusk is convective electric field and the variance of E dusk is correlative with B z and V The ions and electrons will be accelerated by continued increase of the E dusk for very long time
- Publication:
-
36th COSPAR Scientific Assembly
- Pub Date:
- 2006
- Bibcode:
- 2006cosp...36..242W