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Fifth LOIS Workshop, November 23-25, 2003 LOIS Space Centre, Växjö, Sweden |
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Manifestation of Small Scale Turbulence of Geo-Disturbed Solar Wind in
SURA-WIND experiments
Yu. V. Tokarev(1), J.-L. Bougeret (2), M. Kaiser (3), G. P. Komrakov (1), G. N. Boiko(1), V. A. Alimov (1), Yu. I. Belov(1), N. V. Murav'eva (1), K. Goetz (4)
Yu. V. Tokarev(1), J.-L. Bougeret (2), M. Kaiser (3), G. P. Komrakov (1), G. N. Boiko(1), V. A. Alimov (1), Yu. I. Belov(1), N. V. Murav'eva (1), K. Goetz (4)
(1) Radiophysical Research Institute, N.Novgorod, Russia
(2) Observatoire de Paris, Meudon, France
(3) Goddard Space Flight Center, USA
(4) University of Minnesota, USA
AbstractIn 1996--2001 a set of in the on reception of the ground-based SURA transmitter signals in the frequency range 4.5--9 MHz by the WIND spacecraft was conducted. The aim of the experiments was to study the peculiarities of HF-wave propagation through the near-Earth plasma environment in various geophysical conditions. Some results of the experiments are presented. Particularly, a quite often appearance of the fast amplitude fluctuations of the received signal with time scale less than of 1 sec were obtained when the spacecraft was located out in the Earth magnetosphere. Scattering of the sounding signal on fast moving interplanetary plasma clouds with sizes of 40--100 km seems to be the most probable reason of the phenomenon. Parameters of the solar wind turbulence spectrum near the inner scale of the inertial interval are discussed on the base of results obtained.The presentation (PDF) |
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