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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 15, issue 4
Ann. Geophys., 15, 424–429, 1997
https://doi.org/10.1007/s00585-997-0424-4
© European Geosciences Union 1997
Ann. Geophys., 15, 424–429, 1997
https://doi.org/10.1007/s00585-997-0424-4
© European Geosciences Union 1997

  30 Apr 1997

30 Apr 1997

Range finding of Alfvén oscillations and direction finding of ion-cyclotron waves by using the ground-based ULF finder

A. Guglielmi1, J. Kangas2, D. Milling3, D. Orr3, and O. Pokhotelov1 A. Guglielmi et al.
  • 1Institute of Physics of the Earth, 123810, Moscow, Russia
  • 2Department of Physical Sciences, University of Oulu, Linnanmaa, PO Box 333, FIN-90571 Oulu, Finland
  • 3University of York, Heslington, UK

Abstract. A new approach to the problem of direction and distance finding of magnetospheric ULF oscillations is described. It is based on additional information about the structure of geoelectromagnetic field at the Earth's surface which is contained in the known relations of the theory of magnetovariation and magnetotelluric sounding. This allows us to widen the range of diagnostic tools by using observations of Alfvén oscillations in the Pc 3–5 frequency band and the ion-cyclotron waves in the Pc 1 frequency band. Preliminary results of the remote sensing of the magnetosphere at low-latitudes using the MHD ranger technique are presented. The prospects for remote sensing of the plasmapause position are discussed.

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