Open AccessThe temporal and spatial variations of low frequency geomagnetic pulsations at polar cusp and cap latitudes
Author(s) -
Н. Г. Клейменова,
P. Francia,
U. Villante,
О. В. Козырева,
J. Bitterly,
JeanJacques Schott
Publication year - 1999
Publication title -
annals of geophysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 60
eISSN - 2037-416X
pISSN - 1593-5213
DOI - 10.4401/ag-3747
Subject(s) - noon , morning , clockwise , earth's magnetic field , geology , low latitude , latitude , local time , attenuation , geodesy , geophysics , ionosphere , atmospheric sciences , magnetic field , physics , astronomy , optics , amplitude , statistics , mathematics , quantum mechanics
Geomagnetic field measurements at two Antarctic stations are compared during two weeks in the local summer (January 1-15, 1992). Low frequency (0.6-6 mHz) pulsations are observed at each station near local magnetic noon. The same wave packets appear in some cases also at the other station, although with a significant attenuation, more clearly in the morning sector; the waves show a near noon reversal of the polarization sense from counter-clockwise in the morning to clockwise in the afternoon indicating a westward and an eastward propagation, respectively