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

E. D. Tereshchenko (1) , B. Z. Khudukon (1) , M. O. Kozlova (1) , O. V. Evstafiev (1) , T. Nygrén (2) , M. T. Rietveld (3) , A. Brekke (4)

1 PGI - Polar Geophysical Institute of Russian Academy of Sciences
2 Department of Physical Sciences [Oulu]
3 EISCAT Scientific Association [Norway]
4 The Auroral Observatory

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 amplitude. The orientation of the anisotropy in a plane perpendicular to the geomagnetic field is compared with the direction of F region plasma flow. The results indicate that in most cases a good agreement between the two directions is obtained.

Domaines: Océan, Atmosphère; Sciences de la Terre

E. D. Tereshchenko, B. Z. Khudukon, M. O. Kozlova, O. V. Evstafiev, T. Nygrén, et al.. Comparison of the orientation of small-scale electron density irregularities and F region plasma flow direction. Annales Geophysicae, 2000, 18 (8), pp.918-926. ⟨hal-00316733⟩