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Low latitude Pc3 pulsations and associated ionospheric oscillations measured by a digital chirp ionosonde
Author(s) -
Sutcliffe P. R.,
Poole A. W. V.
Publication year - 1984
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/gl011i012p01172
Subject(s) - ionosonde , ionosphere , earth's magnetic field , chirp , geophysics , ionospheric heater , drift velocity , doppler effect , geology , geodesy , physics , electric field , plasma , magnetic field , optics , electron density , astronomy , laser , quantum mechanics
It is shown that oscillations of ionospheric Doppler velocity are associated with Pc3 geomagnetic pulsations recorded at ground level. Two mechanisms are proposed to account for this association, namely, variations in the refractive index of the ionosphere due to the oscillating and vertical drift of the ionosphere as a whole. The latter is used to determine the east‐west component of pulsation electric field in the ionosphere.