E. Golikova¹ , S. Kulichkov²

¹Geophysical Survey of the Russian Academy of Sciences, Moscow, Russian Federation
²A.M. Obukhov Institute of Atmospheric Physics of the Russian Academy of Science, Moscow, Russian Federation

Abstract:

The infrasound data from atmospheric storms obtained at the I43 IMS station were analyzed. The corresponding data of infrasound and internal gravity waves at the group of microbarographs in the Moscow region were analyzed. Infrasound at a frequency of about 0.3 Hz from convective storms during August 12, 2016 was observed. The corresponding results of recording internal gravity waves from atmospheric storms are presented. The recordings made on four microbarographs of the Obukhov Institute of Atmospheric Physics, Royal Academy of Sciences, Moscow. The distance between the four microbarographs is from 7 to 54 kilometres. Fluctuations of atmospheric pressure were detected during the approach of an atmospheric storm towards the recording network, and then its moving away. The regularity of changes in the parameters of internal gravity waves (coherence, azimuth arrival, amplitude and horizontal velocity of propagation waves) is obtained. The high coherence of internal gravity waves between recording points separated by 60 kilometres at periods of more than 30 minutes is obtained.