Fluctuation characteristics of the IMF in the 0.0003-0.01 HZ range

Details Fluctuation characteristics of the IMF in the 0.0003-0.01 HZ range Fluctuation characteristics of the IMF in the 0.0003-0.01 HZ range

Dec 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ge%26ae..25..881o&link_type=abstract

Geomagnetizm i Aeronomiia (ISSN 0016-7940), vol. 25, Nov.-Dec. 1985, p. 881-885. In Russian.

Other

Interplanetary Magnetic Fields, Magnetic Variations, Solar Protons, Explorer Satellites, Histograms, Magnetohydrodynamic Waves, Power Spectra, Solar Flares

Scientific paper

The fluctuation characteristics of the IMF for a series of proton events were studied on the basis of measurements of IMF components carried out on the Explorer 33 and 34 satellites with a time resolution of 5 sec and a measurement accuracy of 0.1 nT. The fluctuations are shown to be mainly determined by Alfven waves; the contribution of other types of waves increases during disturbed periods. The fluctuation spectrum in the whole frequency range studied cannot be described by a power law with the same exponent alpha. The value of alpha is 1.2-1.5 at the low-frequency end of the spectrum, and falls to 0.5-0.8 at the high-frequency end.

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