| Key nodal members | 
        
            
                |  | Laboratoire de Détection et de Géophysique | LDG | France | Arpajon | 
 
            
                |  | GeoForschungsZentrum | GFZ | Germany | Berlin | 
 
            
                |  | Istituto Nazionale di Geofisica e Vulcanologia | INGV | Italy | Milan | 
 
            
                |  | Istituto Nazionale di Geofisica e Vulcanologia | INGV | Italy | Rome | 
 
            
                |  | Instituto Geografico Nacional | IGN | Spain | Madrid | 
 
        
        
 
        
            | Members by right | 
        
            
                |  | Observatories and Research Facilities for EUropean Seismology | ORFEUS | Netherlands | Utrecht | 
 
            
                |  | European Seismological Commission | ESC | Switzerland | Geneve | 
 
            
                |  | International Seismological Centre | ISC | United Kingdom | Thatcham | 
 
            
                |  | U.S. Geological Survey | USGS | United States | Washington | 
 
        
        
 
        
            | Active members | 
        
            
                |  | Institute of Geosciences | IGEO | Albania | Tirana | 
 
            
                |  | Centre de Recherche en Astronomie, Astrophysique et Geophysique | CRAAG | Algeria | Algiers | 
 
            
                |  | National Survey for Seismic Protection | NSSP | Armenia | Yerevan | 
 
            
                |  | GeoSphere Austria | GSA | Austria | Vienna | 
 
            
                |  | Republican Seismic Survey Center of Azerbaijan National Academy of Sciences | RSSC | Azerbaijan | Baku | 
 
            
                |  | Center of Geophysical Monitoring | CGM | Belarus | Minsk | 
 
            
                |  | Royal Observatory of Belgium | ORB/ROB | Belgium | Brussels | 
 
            
                |  | Republic Hydrometeorological Institute | RHI | Bosnia and Herzegovina | Banja Luka | 
 
            
                |  | Federal Meteorological Institute | FMI | Bosnia and Herzegovina | Sarajevo | 
 
            
                |  | National Institute in Geophysics, Geodesy and Geography - BAS | NIGGG | Bulgaria | Sofia | 
 
            
                |  | Andrija Mohorovicic Geophysical Institute and Croatian Seismological Survey | AMGI & CSS | Croatia | Zagreb | 
 
            
                |  | Geological Survey Department | GSD | Cyprus | Nicosia | 
 
            
                |  | Geophysical Institute of the Academy of Sciences | GFU | Czech Republic | Prague | 
 
            
                |  | Institute of Physics of the Earth, Brno | IPE | Czech Republic | Brno | 
 
            
                |  | Geological Survey of Denmark and Greenland | GEUS | Denmark | Copenhagen | 
 
            
                |  | Observatoire Geophysique d'Arta | CERD | Djibouti | Djibouti | 
 
            
                |  | National Research Institute of Astronomy and Geophysics | NRIAG | Egypt | Cairo | 
 
            
                |  | Institute of Seismology | ISF | Finland | Helsinki | 
 
            
                |  | Bureau Central Sismologique Francais | BCSF | France | Strasbourg | 
 
            
                |  | ISTerre, Institut des Sciences de la Terre | ISTerre | France | Grenoble | 
 
            
                |  | Seismic Monitoring Centre of Georgia | SMC | Georgia | Tbilisi | 
 
            
                |  | Federal Institute for Geosciences and Natural Resources | BGR | Germany | Berlin | 
 
            
                |  | National Observatory of Athens | NOA | Greece | Athens | 
 
            
                |  | Laboratory of Seismology, University of Patras | UPSL | Greece | Patra | 
 
            
                |  | University of Thessaloniki | AUTH | Greece | Thessaloniki | 
 
            
                |  | Institute of Engineering Seismology and Earthquake Engineering | ITSAK | Greece | Thessaloniki | 
 
            
                |  | HUN-REN EPSS Kövesligethy Radó Seismological Observatory | BUD | Hungary | Budapest | 
 
            
                |  | Icelandic Meteorological Office | IMO | Iceland | Reykjavík | 
 
            
                |  | Dublin Institute for Advanced Studies | DIAS | Ireland | Dublin | 
 
            
                |  | Geological Survey of Israel | GSI | Israel | Jerusalem | 
 
            
                |  | National Data Center of Israel, Soreq Nuclear Research Center | NDC | Israel | Yavne | 
 
            
                |  | Istituto Nazionale di Oceanografia e Geofisica Sperimentale | OGS | Italy | Trieste | 
 
            
                |  | Jordan Seismological Observatory | JSO | Jordan | Amman | 
 
            
                |  | Seismological Institute of Kosovo | GSK | Kosovo | Pristina | 
 
            
                |  | Geophysics Centre at Bhannes | SGB | Lebanon | Beirut | 
 
            
                |  | Libyan Center for Remote Sensing and Space Science | LCRSSS | Libya | Tripoli | 
 
            
                |  | European Center for Geodynamics and Seismology | ECGS | Luxembourg | Luxembourg | 
 
            
                |  | Department, University of Malta | UM | Malta | Valletta | 
 
            
                |  | Academy of Sciences of Republic of Moldova | ASM-CIP | Moldova | Chisinau | 
 
            
                |  | Direction de l'Environnement |  | Monaco | Monaco | 
 
            
                |  | Institute of Hydrometeorology and Seismology | MSO | Montenegro | Podgorica | 
 
            
                |  | Centre National pour la Recherche Scientifique et Technique | CNRST | Morocco | Rabat | 
 
            
                |  | Département des Sciences de la Terre |  | Morocco | Rabat | 
 
            
                |  | Royal Netherlands Meteorological Institute | KNMI | Netherlands | Amsterdam | 
 
            
                |  | Seismological Observatory | SKO | North Macedonia | Skopje | 
 
            
                |  | Norwegian Seismic Array | NORSAR | Norway | Lillestrom | 
 
            
                |  | University of Bergen | BER | Norway | Bergen | 
 
            
                |  | Institute of Geophysics, Polish Academy of Sciences | IGPAS | Poland | Warsaw | 
 
            
                |  | Instituto de Meteorologia | IMP | Portugal | Lisbon | 
 
            
                |  | Universidade de Evora |  | Portugal | Évora | 
 
            
                |  | Faculdade de Ciências da Universidade de Lisboa |  | Portugal | Lisbon | 
 
            
                |  | National Institute for Earth Physics | NIEP | Romania | Bucharest | 
 
            
                |  | Geophysical Survey of the Russian Academy of Sciences | GSRAS | Russia | Moscow | 
 
            
                |  | Seismological Survey of Serbia | SSS | Serbia | Belgrade | 
 
            
                |  | Earth Science Institute, SAS, Department of Seismology | ESI SAS | Slovakia | Bratislava | 
 
            
                |  | Agencija Republike Slovenije za okolje | ARSO | Slovenia | Ljubljana | 
 
            
                |  | Institut Cartografic i Geologic de Catalunya | ICGC | Spain | Barcelona | 
 
            
                |  | Swedish National Seismic Network | SNSN | Sweden | Uppsala | 
 
            
                |  | Schweizerischer Erdbebendienst | ETH | Switzerland | Zurich | 
 
            
                |  | Institut National de la Météorologie | INMT | Tunisia | Tunis | 
 
            
                |  | Disaster and Emergency Management Presidency, Earthquake Department | ERD | Turkey | Ankara | 
 
            
                |  | Kandilli Observatory and Earthquake Research Institute | KOERI | Turkey | Istanbul | 
 
            
                |  | Main Centre for Special Monitoring | MCSM | Ukraine | Kyiv | 
 
            
                |  | Dubai Municipality |  | United Arab Emirates | Abu Dhabi | 
 
            
                |  | British Geological Survey | BGS | United Kingdom | Edinburgh | 
 
            
                |  | National Seismological Observatory Centre | NSOC | Yemen | Sanaa | 
 
        
        
 
        
            | Corporate members | 
        
            
                |  | GeoSIG Ltd | GEOSIG | Switzerland | Schlieren |