EGU General Assembly 2020
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Short-duration infrasound signals observed at the array PVCI

Tereza Sindelarova1, Csenge Czanik2, Michal Kozubek1, Katerina Podolska1, Jiri Base1, and Dan Kouba1
Tereza Sindelarova et al.
  • 1The Czech Academy of Sciences, Institute of Atmospheric Physics , Prague 4, Czechia (
  • 2Geodetic and Geophysical Institute, Research Centre for Astronomy and Earth Sciences, Budapest, Hungary

We present the most interesting cases from observations of short-duration infrasound signals at the array PVCI (50.53°N 14.57°E).  The array is equipped with three sensors and it has an aperture of 200 m. The optimum detection range of the array is 0.02-4 Hz.

On 24 August 2016 at 01:36:32 UTC, a strong earthquake occurred in Central Italy; the epicentre was located at 42.75°N and 13.22°E. The azimuth from PVCI to the epicentre was 187° and the distance was 871 km. At 02:23-02:40 UTC, signals from the azimuths around 195° were recorded at the array. The time interval corresponds to the expected stratospheric signal arrival.

On 3 March 2016 at 21:51-21:53 UTC, PVCI registered signal from the azimuth of 199°. The signal elevation was 30-35°. We assume that the signal source was the bolide EN060316 that entered the atmosphere above Upper Austria and Bavaria. 

Two large accidental explosions occurred in the region recently; both of them were recorded by PVCI and other member stations of the CEEIN network. On 26-27 September 2017, an ammunition depot exploded in Kalynivka, Central Ukraine. Signals from the azimuths of 85-90° were recorded on 26 September 2017 at 21:02-21:05 UTC and at 23:16-23:21 UTC. On 1 September 2018 around 03:15 UTC, an explosion occurred in the refinery near Ingolstadt, Germany. A high amplitude signal arrived at PVCI at 03:30:48 UTC from the azimuth of 243°.

How to cite: Sindelarova, T., Czanik, C., Kozubek, M., Podolska, K., Base, J., and Kouba, D.: Short-duration infrasound signals observed at the array PVCI, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-2582,, 2020.


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