Mathematics – Probability
Scientific paper
Dec 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977ge%26ae..17.1070s&link_type=abstract
Geomagnetizm i Aeronomiia, vol. 17, Nov.-Dec. 1977, p. 1070-1075. In Russian.
Mathematics
Probability
Geomagnetic Pulsations, Magnetic Storms, Night Sky, Ring Currents, Solar Activity, Atmospheric Models, Particle Motion, Statistical Correlation
Scientific paper
Geomagnetic data for the years 1957-1973 are used to investigate the relationship between decreasing-period oscillations (nighttime broadband geomagnetic pulsations with a slowly increasing medium frequency) and the field of D-st variations. Two-hundred-forty-six cases of occurrence of these oscillations are correlated statistically with magnetic storm phases, separate weak field-disturbances, and D-st indices. It is found that decreasing-period oscillations occur during particle precipitations in the ring current region at small values of D-st. A model involving the sequential generation and superposition of ring current is used to explain the fact that the oscillations in question occur with equal probability in the main and recovery phases of storms, as well as the fact that they occur during magnetic disturbances.
Shevnin A. D.
Sizova L. Z.
Zolotukhina N. A.
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