Atmospheric infrasound observed during intense convective storms on 9–10 July 2011. (January 2015)

• Record Type: Journal Article
• Authors: Sindelarova, T.; Chum, J.; Skripnikova, K.; Base, J.
• Is Part Of: Journal of atmospheric and solar-terrestrial physics. Volume 122(2015:Jan.)
• Page Start: 66
• Page End: 74
• Publication Date: 2015-01
• Subjects: Atmospheric infrasound -- Convective storms -- Sprites; Geophysics -- Periodicals; Atmospheric physics -- Periodicals; Géophysique -- Périodiques; Météorologie physique -- Périodiques; Electronic journals; 551.51
• DOI: 10.1016/j.jastp.2014.10.014
• Languages: English
• ISSNs: 1364-6826

Abstract

Abstract: Atmospheric infrasound of frequencies 0.1–4 Hz observed in Central Europe during convective storms on 9–10 July 2011 from 21:00 to 02:57 UT was analysed. Azimuth of signal arrival followed positions of the convective storms passing over the region of measurements from south-west to north-east. Significant variations in azimuths of signal arrival (up to 105°) occurred periodically between 21:30 and 23:00 UT, at the time of maximum development of convective storms. Sprites (discharges in the mesosphere) seem to be potential sources of these infrasound signals. Stable infrasound arrivals were observed between 02:00 and 02:57 UT from direction where abating convective storms were located. Highlights: Infrasound generated by nearby convective storms was studied. Azimuth of signal arrival followed the positions of storms passing over the region. Distinct changes (up to 105°) were observed in azimuths of infrasound arrivals. The signals were possibly generated by sprites.