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Coincidence of the ion precipitation boundary with the HF E region backscatter boundary in the dusk‐midnight sector of the auroral oval
Author(s) -
Jayachandran P. T.,
MacDougall J. W.,
StMaurice J.P.,
Moorcroft D. R.,
Newell P. T.,
Prikryl P.
Publication year - 2002
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2001gl014184
Subject(s) - dusk , midnight , ionosphere , electron precipitation , geophysics , geology , boundary (topology) , precipitation , atmospheric sciences , magnetosphere , meteorology , physics , magnetic field , astronomy , mathematics , quantum mechanics , mathematical analysis
We have examined the location of the SuperDARN E region ionospheric backscatter boundary in the dusk‐midnight sector and compared it with the equatorward boundary of the hard ion precipitation (b2i) determined from the DMSP satellite particle spectrograms in the dusk‐midnight sector of the auroral oval. The locations of these two boundaries were found to be nearly coincident. This study evinces the capability of the SuperDARN radars to monitor the equatorward ion precipitation boundary (diffuse auroral boundary) and its dynamics irrespective of magnetic activity.