Historical background and current situation

G.I. is one of the oldest Institutes in Greece operating continuously since 1893. In 1897 the first seismograph was installed in Athens and in 1899 the first seismic network started to operate. Since then, systematic and detailed seismic observations started for the region extending from 34° to 42° N and 19° to 30° E. The location of the Head Office of I.G is on the hill of Nymphs, opposite to Acropolis, at the center of Athens. It is the main center in Greece, for the continuous monitor of the seismicity of the country and reporting to national and international authorities. Moreover Institute’s aim is the study and research in the fields of: seismology, physics of the earth's interior, geophysics, plate tectonics, volcanology and geothermy, neotectonics, tsunamis, seismotectonics. and Strong Motion and Engineering Seismology


Drums, GEIN

Aim - Activities of G.I.

Main tasks of G.I. are collection and processing of various seismological - geophysical parameters, the elaboration of research projects and relevant studies, the training and services provided to third bodies. The contribution of I.G to the Higher Education is also strong. A lot of undergraduate, postgraduate and PhD theses have been carried out at the Institute. I.G collaborates with Universities and Research Centres in Greece and abroad in order to carry out scientific research on various seismological and geophysical themes. The I.G operates around the clock, 365 days a year. The I.G has also a crucial mission, which is to inform the Government, the General Secretariat of Civil Protection, the Earthquake Planning and Protection Organization (E.P.P.O) and the Public about the seismic activity of Greece.


Structure of G.I.

The structure of the institute is as following: The Director, the Researchers and the administration and technical staff. There is also a scientific council consisting of five researchers (elected every three years by the researchers of the Institute) consulting the Director

  • The Director

  • The Research Scientists

  • Τhe Scientific Technical staff

  • The Administration and Technical staff




STS-2 Seismometer

Facilities and management fulfilling G.I's aims:

GI operates the following networks:

  • The Seismic Network

  • The strong motion network

  • The network with the GPS stations

  • The Tsunameters network

  • The seismological portable network

The Seismic Network consists of forty five (45) telemetric, digital seismic stations, equipped with broadband, 3D component seismometers. Two stations are linked with international networks; Athens is a WWSSN station and Anogia of Crete a MEDNET station code name IDI. IDI serves as an auxiliary station for CTBTO/UN. The Athens station is equipped with a prototype, Wood-Anderson seismograph for the calculation of local earthquake magnitude. Teleseismic events are also recorded. By the beginning of 2006, a national project was launched, named: “Hellenic Unified Seismological Network-HUSN”, financed by the Ministry of Development (EPAN 4.5) to unify the Seismological networks of the Greek Institutions (Institute of Geodynamics and the Seismological laboratories of the Universities of Athens, Thessaloniki and Patras) where IG is the main coordinating institution. By the end of 2007, was made possible the successful interconnection of the seismological networks of the four Institutions and began to give results. Today HUSN consists of 120 stations. In this way it created the conditions for:

  • direct, detailed and more reliable information for the state and public,

  • common observations of the seismicity and exchange of all available elements between the institutions,

  • collection of data for research and possibility of their direct disposal in the scientific community andmoreprecisely a detailed study of the seismicity of the country,

  • more detailed and precise recording of the seismic activity of the broader area of Greece,

  • the unified calculation of seismic parameters, the publication of common announcements of the occurrence of strong earthquakes, the compilation of a national bulletin of earthquakes and

  • more generally the qualitative upgrading of seismological data and seismological research

Stations Map

GEIN NOA Computer Room

Data collected from all stations, corresponding to earthquakes occurring in the territory of Greece and the bordering areas, are analyzed routinely in detail. In-house software is used for processing the digital records. The results are listed in the monthly seismological bulletins of the Institute. These bulletins are distributed regularly all over the world, including many Seismological Centres, Universities, different Research Centres, Organizations and libraries. In terms of everyday use of the digital waveform records there is a software procedure to auto¬matic update catalogue and web-pages with manual measurements and results. Also, there is software for pro¬ducing automatically MT solution for events with local magnitude over 4 using the available regional broadband waveform records. Various cases of events in Greece have been presented in the http://bbnet.gein.noa.gr



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