Skip to main content

Table 1 Basic statistical values of selected GW parameters for periods 2014/7–2015/6 (solar maximum) and 2018/9–2019/8 (solar minimum)

From: Statistical investigation of gravity wave characteristics in the ionosphere

Year GW parameter Mean
L–O mode
σ
L–O mode
Skew
L–O mode
Mean
R–X mode
σ
R–X mode
Skew
R–X mode
2014/7–2015/6 vo (m/s) 153 75 4.1 149 62 4.2
2018/9–2019/8 vo (m/s) 122 41 1.1 114 36 1.1
2014/7–2015/6 v (m/s) 191 78 4.0 184 66 3.9
2018/9–2019/8 v (m/s) 154 40 0.7 143 35 0.7
2014/7–2015/6 \({\epsilon}\)o (°) − 31 16 − 0.2 − 30 16 − 0.4
2018/9–2019/8 \({\epsilon}\)o (°) − 51 12 0.3 − 53 13 0.6
2014/7–2015/6 \({\epsilon}\) (°) − 24 13 − 0.5 − 24 13 − 0.5
2018/9–2019/8 \({\epsilon}\) (°) − 37 10 − 0.6 − 39 11 − 0.4
2014/7–2015/6 T (min) 17 6 1.3 17 6 1.4
2018/9–2019/8 T (min) 18 7 0.8 18 6 0.9
2014/7–2015/6 λ (km) 197 129 4.3 188 110 5.3
2018/9–2019/8 λ (km) 167 94 1.8 156 79 2.0