Studies of theEregion neutral wind in the quiet auroral ionosphere
作者： Asgeir Brekke , Satonori Nozawa , Trygve Sparr
DOI: 10.1029/93JA03232
关键词: Radar 、 Amplitude 、 Atmospheric tide 、 Incoherent scatter 、 Atmospheric sounding 、 Altitude 、 Wind speed 、 Atmospheric sciences 、 Ionosphere 、 Earth-Surface Processes 、 Ecology (disciplines) 、 Earth and Planetary Sciences (miscellaneous) 、 Space and Planetary Science 、 Palaeontology 、 Forestry 、 Aquatic science 、 Atmospheric Science 、 Soil science 、 Geochemistry and Petrology 、 Geophysics 、 Oceanography 、 Water Science and Technology
摘要: Quiet time auroral E region neutral wind data obtained by European Incoherent Scatter Radar (EISCAT) have been analyzed in order to establish the background mean velocities as well tidal influence on wind. There is a rather strong and persistent eastward present all seasons below 120 km. It strongest summer (∼60 m s−1), weak fall spring, weaker winter (∼20 s−1). The zonal westward above km, general stronger (∼70 s−1) other (∼30 northward small (∼10 shifted gradually from being mainly southward becoming summer. vertical velocity of 5 s−1 region. amplitude diurnal tides component broad minima height between 90 horizontal tide dominant upper region, while semidiurnal has maximum at 110 particular component. 8- 6-hour are constant height. results good agreement with published basis incoherent scatter radar measurements. comparison theoretical models underlines need for more modeling including ionized plasma electric fields winds. Theoretical studies motion respect especially lacking this important
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