Wave velocity disturbances of neutral particles and ions in the polar regions

1Bespalova, AV, 2Fedorenko, AK
1Space Research Institute of the National Academy of Science of Ukraine and the State Space Agency of Ukraine, Kyiv, Ukraine
2Space Research Institute of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine, Kyiv, Ukraine
Kosm. nauka tehnol. 2013, 19 ;(4):50–56
Section: Space and Atmospheric Physics
Publication Language: Ukrainian

The wave disturbances of polar ionosphere by measuring the velocity of neutral particles and ions with the use of LEO satellite “Dynamic Explorer 2” are investigated. Amplitudes of the horizontal and vertical components of velocity of neutral particles are tens of metres per second, with maximum values being reached for the most part over the central regions of the polar caps. Vertical velocities of ions almost coincide with vertical velocities of neutral particles. Horizontal velocities of ions are maximal at the borders of the polar caps and in the auroral ovals where they reach hundreds of metres per second. The amplitudes of horizontal ion velocities are on average higher in night sectors of auroral ovals than in daytime sectors.

Keywords: polar ionosphere, wave disturbances, «Dynamic Explorer 2»
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