The relationship between the IMF magnitude and the frequency of Pc 3, 4 pulsations on the ground - Simultaneous events

Details The relationship between the IMF magnitude and the frequency of Pc 3, 4 pulsations on the ground - Simultaneous events The relationship between the IMF magnitude and the frequency of Pc 3, 4 pulsations on the ground - Simultaneous events

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985p%26ss...33..387o&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 33, April 1985, p. 387-393. Research supported by Kenyatta University.

Physics

6

Geomagnetic Micropulsations, Geomagnetism, Interplanetary Magnetic Fields, Magnetic Flux, Magnetometers, Bandwidth, Ground Stations

Scientific paper

Several attempts have been made to predict the strength of the interplanetary magnetic field (IMF) from the frequency of Pc 3, 4 pulsations measured on the ground. The predictive capability of the ground pulsations depends on the relationship which exists between their frequency and the IMF magnitude. It has been suggested that the relationship improves considerably when coincident frequencies between two stations are used. In this paper it is shown that the correlation between the IMF magnitude and the frequency of coincident pulsation events in a network of five stations in the IGS magnetometer array. It is found that the frequency-field strength relationship is very good for the coincident events at the stations with large longitudinal separation less than 3 h. It is also confirmed that the frequency taken from a network of ground stations is a better predictor of IMF magnitude than that from a single station.

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