[P-EM13] 太陽地球系結合過程の研究基盤形成

[PEM13-P07] A survey of conditions for artificial aurora experiments at EISCAT Tromsø site using dynasonde data

*津田 卓雄¹、Rietveld Michael²、Kosch Michael³、大山 伸一郎⁴、細川 敬祐¹、野澤 悟徳⁴、川端 哲也⁴、水野 亮⁴、小川 泰信⁵ (1.電気通信大学、2.EISCAT Scientific Association、3.South African National Space Agency、4.名古屋大学、5.国立極地研究所)

キーワード：人工オーロラ、電離圏加熱、EISCAT、トロムソ、ダイナゾンデ

We report a brief survey of conditions for artificial aurora optical experiments in F region heating with O-mode at EISCAT Tromsø site using dynasonde data from 2000 to 2017. According to the results from our survey, we can find the following: the possible condition for the artificial aurora experiments is concentrated on twilight hours in both evening and morning, compared with late night hours; the possible condition appear in fall, winter, and spring while there is no chance in summer, and the month-to-month variation among fall, winter, and spring is not so clear. The year-to-year variation is well correlated with the solar cycle, and experiments during the solar minimum would be almost hopeless. These findings are useful for planning future artificial aurora optical experiments.