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Sources of Cold Dense Plasma Sheet:A Multi-Satellite, Multipoint Case Study

M. G. Taylor
  • Function : Author
B. Lavraud
H. Frey
P. Escoubet
H. Laakso
  • Function : Author
C. Carr
E. A. Lucek
  • Function : Author
Arnaud Masson
  • Function : Author
K. Nykyri
  • Function : Author
H. Opgenoorth
  • Function : Author
Q. Zong


During conditions of northward interplanetary magnetic field (IMF), the near tail plasma sheet is known to become denser and cooler, and is described as the cold dense plasma sheet (CDPS). The source of this plasma is of great interest, in particular, whether it is transferred to the magnetosphere via poleward-of-cusp, lobe reconnection or via mechanisms at the flank magnetopause. This paper addresses this question via a case study of data from the 5th December 2004, utilizing a wide variety of spacecraft observations, including ACE, Cluster, Double Star (TC-1 and TC-2), Polar, LANL GEO and IMAGE. Conjunctions between various sub-sets of this multi-spacecraft constellation enable a multi point investigation of magnetospheric dynamics related to CDPS formation, including: The global reaction of the magnetosphere to the impact of a coronal mass ejection (CME) related shock (Cluster, LANL GEO etc); Observations of boundary layer waves at the flank magnetopause (TC-1) along with non-wave like boundary layers (Polar); High -latitude observations of the CDPS in the northern (TC-2) and southern (Polar) hemisphere; Evidence of high-latitude, poleward-of-cusp reconnection (IMAGE, Polar). The pertinent aspects of this study suggest that although there is evidence of large-scale flank boundary waves and possible plasma-transfer, poleward-of-cusp reconnection appears to produce sufficient CDPS like material.
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Dates and versions

insu-00356783 , version 1 (28-01-2009)


  • HAL Id : insu-00356783 , version 1


M. G. Taylor, B. Lavraud, M. F. Thomsen, A. N. Fazakerley, M.W. Dunlop, et al.. Sources of Cold Dense Plasma Sheet:A Multi-Satellite, Multipoint Case Study. American Geophysical Union Fall Meeting 2005, 2005, San Francisco, United States. ⟨insu-00356783⟩
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