Oscillations of the sun and the geomagnetic field

Details Oscillations of the sun and the geomagnetic field Oscillations of the sun and the geomagnetic field

Sep 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978natur.275..113l&link_type=abstract

Nature, vol. 275, Sept. 14, 1978, p. 113, 114.

Physics

2

Geomagnetism, Magnetic Variations, Plasma Oscillations, Solar Atmosphere, Interplanetary Magnetic Fields, Periodic Variations, Power Spectra

Scientific paper

Toth's (1977) suggestion that the long-period oscillations of the solar atmosphere produce corresponding oscillations of the geomagnetic field is challenged by a spectral analysis of geomagnetic field data obtained the same days but at different locations than the data from Tihany, Hungary studied by Toth. Data from Durham, New Hampshire; Girardville, Quebec; and Siple Station, Antarctica for November 9-11, 1975 were examined by fitting a power law frequency dependence, but no evidence for a significant peak at a period of approximately 2 hr 40 min was detected for either the Northern Hemisphere data or for the conjugate (Siple) data. The data from Hungary had revealed approximately 2 hr 40 min oscillations in the geomagnetic field data, and it is suggested that this period is a local effect.

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