Memorandum of Understanding

Memorandum of Understanding for the collaboration of the Central and Eastern European Infrasound Network

Between the Zentralanstalt für Meteorologie und Geodynamik (ZAMG), Vienna, Austria, Institute of Atmospheric Physics of the Czech Academy of Sciences (CAS IAP), Prague, Czech Republic, Research Centre for Astronomy and Earth Sciences of the Hungarian Academy of Sciences (MTA CSFK), Budapest, Hungary, National Institute for Earth Physics (NIEP), Bucharest, Romania

The parties have agreed to establish the Central and Eastern European Infrasound Network (CEEIN).

The CEEIN currently consists of the following stations:

Country Station code Lat Lon Aperture (km) No. of elements Date of installation Other
Hungary PSZI 47.92 19.89 0.25 4 2017.05.25. co-located with seismometer
Romania IPLOR 45.8512 26.6498 2.4 6 2009-2012 co-located with seismic array
Romania BURARI 47.6151 25.2159 1.2 4 2016.07.27. co-located with seismic array
Romania I67RO 46.6712 23.1224 0.9 4 2016.09.29. PTS mobile temporary array co-located with NIEP seismometer
Czech Republic PVCI 50.53 50.53 0.2 3 2014.04.13. co-located with seismometer operated by Institute of Geophysics,CAS co-located with potential gradient (electric field) measurement
Czech Republic WBCI 50.25 12.44 6 4 2016.09.28. co-located with seismometer operated by Institute of Geophysics,CAS co-located with potential gradient (electric field) measurement
Hungary PSZI 47.92 19.89 0.25 4 2017.05.25. co-located with seismometer
Czech Republic Ionospheric Doppler Sounder 50.03 14.46 - 5 Data available from 2012.01 Czech Republic Ionospheric Doppler Sounder 50.03 14.46 5 Data available from 2012.01 Complementary measurements to WBCI. Enables to observe infrasound in the ionosphere – extension of CEIN
Austria ZAMG 47.78 16.03 0.7 4 to be installed later in 2018 mobile station
The parties encourage the following activities in particular:
  • Form a working group within the upcoming ARISE IA framework.
  • Real-time data exchange of infrasound records within the group and ARISE IA
  • Production of the annual Central European Infrasound Bulletin
  • Collaboration in scientific research, such as
    • infrasound propagation in local and regional distances
    • study of seismo-acoustic sources using co-located seismic and infrasound instruments, i. e. explosions, landslides, avalanches and earthquakes
    • identification of infrasound sources
      • bolides (in collaboration with the Institute of Astronomy of the MTA CSFK)
      • lightning and sprites (supplemented by the data of the sprite observation system of the MTA CSFK GGI, co-located potential gradient (electric field) measurements at PVCI and WBCI)
      • thunderstorms
      • mountain waves
    • discrimination between natural and anthropogenic events
    • participating in the European volcano monitoring studies
    • jointly collecting of a list containing reference infragenic sources observed in Central and Eastern Europe (events of special interest)
    • vertical coupling between the ionosphere and lower atmosphere (based on WBCI data and Doppler sounding data)

Bulletins