1. Wilson Infrasound Observatories, Alaska Volcano Observatory, Geophysical Institute; University of Alaska; Fairbanks AK USA
2. National Center for Physical Acoustics; University of Mississippi; University MS USA
3. Seismology Division; The Geophysical Institute of Israel; P.O.B. 182, Lod 71100 Israel
4. International Data Centre, CTBTO; Vienna Austria
5. Infrasound Lab, HIGP, SOEST; University of Hawaii at Manoa; Manoa HI USA
6. Upper Atmospheric Modeling Section, Naval Research Laboratory; Washington DC USA
7. International Monitoring System Division, CTBTO; Vienna Austria