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

• Main Authors: Tereshchenko, E. D., Khudukon, B. Z., Kozlova, M. O., Evstafiev, O. V., Nygrén, T., Rietveld, M. T., Brekke, A.
• Other Authors: Polar Geophysical Institute of Russian Academy of Sciences (PGI), Russian Academy of Sciences Moscow (RAS), Department of Physical Sciences Oulu, University of Oulu, EISCAT Scientific Association Norway, The Auroral Observatory, University of Tromsø (UiT)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2000
• Subjects: [SDU.OCEAN]Sciences of the Universe [physics]/Ocean; Atmosphere; [SDU.STU]Sciences of the Universe [physics]/Earth Sciences; EISCAT
• Online Access: https://hal.science/hal-00316733; https://hal.science/hal-00316733/document; https://hal.science/hal-00316733/file/angeo-18-918-2000.pdf

International audience 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.