Spectral analysis of non-tidal gravity variations

Abstract

The results of spectral analysis of non-tidal variations of gravity in Bishkek (Kyrgyzstan) in the year of the calm Sun (2018) are presented. Previously non-tidal variations were divided into local and averaged parts .The analysis is carried out separately for the initial values of variations and local and averaged parts. All outliers of variation values beyond the mean values are excluded. Emissions of variations are mainly due to earthquakes. The elimination of emissions showed that the amplitude spectra did not change throughout the year. The residual variations are probably related to the natural fluctuations of the atmosphere, which are mostly determined by meteor showers.