Computer Science
Scientific paper
Jun 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ge%26ae..47..336k&link_type=abstract
Geomagnetism and Aeronomy, Volume 47, Issue 3, pp.336-342
Computer Science
94.30.Aa, 94.30.Lr
Scientific paper
The data of continuous observations of ELF emissions (polar chorus) at South Pole Antarctic observatory (Φ = -74.02°) for 1997 1999 and during the superstrong magnetic storms of October and November 2003 are analyzed. It has been established that an increase in polar chorus is as a rule observed during the initial and recovery phases of a magnetic storm at positive values of the IMF vertical component (IMF B z > 0). Under such conditions, South Pole is located in the region of closed field lines. It has been found that the generation of polar chorus at South Pole abruptly ceases during the storm main phase after the IMF B z southward turning and beginning of an intense substorm in the nightside auroral zone, probably, because this observatory appears in the region of projection of the open magnetosphere due to the expansion of the polar cap.
Kleimenova N. G.
Kozyreva O. V.
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