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Comparison of the orientation of small-scale electron density irregularities and F region plasma flow direction |
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| Authors: | E D Tereshchenko B Z Khudukon M O Kozlova O V Evstafiev T Nygrén M T Rietveld A Brekke |
| Institution: | (1) Polar Geophysical Institute, 15 Khalturina, 183010 Murmansk, Russia;(2) Department of Physical Sciences, University of Oulu, P.O. Box 3000, FIN-90401 Oulu, Finland;(3) EISCAT, N-9027 Ramfjordbotn, Norway;(4) Max-Planck-Institut für Aeronomie, D-37191 Katlenburg-Lindau, Germany;(5) Auroral Observatory, University of Tromsø, N-9037 Tromsø, Norway |
| Abstract: | 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. |
| Keywords: | Ionosphere (auroral ionosphere ionospheric irregularities) |
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