EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Can ground infrasound measurements be a useful complementary technology in studies of streamer events?

Tereza Sindelarova1, Michal Kozubek1, Katerina Podolska1, Istvan Bondar2, Marcell Pasztor2,3, and Lisa Kuchelbacher4
Tereza Sindelarova et al.
  • 1The Czech Academy of Sciences, Institute of Atmospheric Physics , Prague, Czechia (
  • 2Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences, Eötvös Loránd Research Network (ELKH), Budapest, Hungary
  • 3ELTE Eötvös Loránd University, Institute of Geography and Earth Sciences, Department of Geophysics and Space Science, Budapest, Hungary
  • 4German Aerospace Center, Earth Observation Center, Department of Atmosphere, Oberpfaffenhofen, Germany

Streamer events are induced by breaking of planetary waves near the tropopause. Streamers are significant transient disturbances to the seasonal circulation patterns in the tropopause-stratosphere region at mid latitudes. They modify dynamics of the polar jet stream and of the lower stratosphere.  At streamers’ flanks, strong wind shear occurs and gravity waves can be excited.  Western Europe and the surrounding regions of the North Atlantic are typical regions where streamer events develop.

Long range infrasound propagation is mainly controlled by temperature and wind fields in the atmosphere. Zonal winds in the stratosphere and jet stream near the tropopause belong to key factors that drive infrasound propagation.

A feasibility study on utilisation of ground infrasound measurements in research of streamer events was performed under the ESA’s Aeolus+Inovation project Lidar Measurements to Identify Streamers and Analyse Atmospheric Waves. Three western stations of the Central and Eastern European Infrasound Network WBCI (50.25°N 12.44°E), PVCI (50.53°N 14.57°E), and PSZI (47.92°N 19.89°E) were included in the study of streamer events from February 2020 to March 2021. WBCI is a large aperture array used for observations of low frequency infrasound in the frequency range of 0.0033-0.4 Hz. The stations PVCI and PSZI operate in the infrasound band of 0.05-5 Hz. We focused on statistical comparison of infrasound arrival parameters in periods influenced by streamer events and on calm days.

The presented analysis of the data of the three infrasound stations located in Central Europe did not identify significant first order phenomena related to streamer events. Considering further streamer events and including more stations is necessary to find out if ground infrasound observations could serve for monitoring of streamer events.


How to cite: Sindelarova, T., Kozubek, M., Podolska, K., Bondar, I., Pasztor, M., and Kuchelbacher, L.: Can ground infrasound measurements be a useful complementary technology in studies of streamer events?, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-751,, 2022.