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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 12, issue 12
Ann. Geophys., 12, 1192–1196, 1994
https://doi.org/10.1007/s00585-994-1192-z
© European Geosciences Union 1994
Ann. Geophys., 12, 1192–1196, 1994
https://doi.org/10.1007/s00585-994-1192-z
© European Geosciences Union 1994

  31 Dec 1994

31 Dec 1994

Note on the dependence of Pc3-4 activity on the solar wind velocity

A. V. Guglielmi and A. S. Potapov A. V. Guglielmi and A. S. Potapov

Abstract. Various models that describe the dependence of pulsation amplitude A on the solar wind velocity V are discussed. Phenomenological considerations and experimental data count in favour of a model of the form A/A0=(V/V0) exp (-V0/V). The linear model A=a+bV which is common in the literature gives negative values of amplitude as V->0, which is strange from the physical point of view. The possibility of modifying the linear model by including critical phenomena is discussed.

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