Analysis of Atmospheric Electric Field Variation Signals using Aspectum of the Digital Natural Observation Method—Detection of Instantaneous Variation of Atmospheric Electric Field with Wind—
As the atmospheric electric field always fluctuates its observed waveforms are very complicated. It is important to detect the characteristic variation from the observed signals and find out its cause. The natural observation method is adequate to analyze such non-periodic signals as the atmospheric electric field signals. In this method the aspectum is proposed as the quantity to estimate the instantaneous power. In this study signal processing by the aspectum was applied to signals of atmospheric electric field variation. It was clarified that there exists the strong correlation between the instantaneous fluctuation of atmospheric electric field and the wind speed in the convenient meteorological environment.