Blar i forfatter Artikler, rapporter og annet (EISCAT) "Evstafiev, O.V."

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    • Comparison of the orientation of small-scale electron density irregularities and F region plasma flow direction. 

      Rietveld, Michael T.; Tereshchenko, E.D.; Brekke, Asgeir; Khudukon, B.Z.; Kozlova, M.O.; Evstafiev, O.V.; Nygren, T. (Journal article; Tidsskriftartikkel; Peer reviewed, 2000)
      Results are shown from an experimental campaign where satellite scintillation was observed at three sites at high latitudes and, simultaneously, the F region plasma flow was measured by the nearby EISCAT incoherent scatter radar. The anisotropy parameters of field-aligned irregularities are determined from amplitude scintillation using a method based on the variance of the relative logarithmic ...

    • Irregular structures of the F layer at high latitudes during ionospheric heating. 

      Tereshchenko, E.D.; Rietveld, Michael T.; Brekke, Asgeir; Kozlova, M.O.; Evstafiev, O.V.; Khudukon, B.Z.; Nygren, T. (Journal article; Peer reviewed; Tidsskriftartikkel, 2000)
      Results on heating the ionospheric F region above Tromsø, Norway are presented. The ionosphere was monitored by satellite tomography and amplitude scintillation methods as well as the EISCAT incoherent scatter radar. No effect of heating was observed in the daytime. In the evening and in the pre-midnight sector, noticeable tilts of the F region were observed during heating periods. The tilts overlapped ...