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Ellipticity variations in Pi2 pulsations at low latitudes
Author(s) -
Sutcliffe Peter R.
Publication year - 1981
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/gl008i001p00091
Subject(s) - ionosphere , low latitude , latitude , total electron content , atmospheric sciences , electron density , electron , f region , high latitude , geology , middle latitudes , plasmasphere , nocturnal , plane (geometry) , geophysics , geodesy , physics , plasma , tec , magnetosphere , astronomy , geometry , mathematics , quantum mechanics
A study of the temporal variations in the horizontal plane ellipticity of Pi2 pulsations recorded at a low latitude station reveals both nocturnal and annual variations. Ellipticity decreases from positive to negative through the night; the greatest decrease occurs during November and the smallest during May. The variations exhibit trends similar to those in plasmaspheric electron density and total ionospheric electron content.