The temporal and spatial variations of low frequency geomagnetic pulsations at polar cusp and cap latitudes

• Published in: Annals of Geophysics
• Main Authors: J. Bitterly, O. V. Kozyreva, U. Villante, P. Francia, N. G. Kleimenova, J. J. Schott
• Format: Article in Journal/Newspaper
• Language: English
• Published: Istituto Nazionale di Geofisica e Vulcanologia (INGV) 1999
• Subjects: Geomagnetic pulsations; Antartica; Meteorology. Climatology; QC851-999; Geophysics. Cosmic physics; QC801-809; Antarctic; Antarc*; antartic*
• Online Access: https://doi.org/10.4401/ag-3747; https://doaj.org/article/626de263baad44f482d5fa83cefec1f4

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.