Seismological Laboratory

Real-time Shaking Maps (PGA & PGR distribution)
Hellenic Macroseismic Database
Brief description List of Earthquakes

Real-time Ground Shaking Maps of Peak Ground Acceleration (PGA in g units) and Peak Ground Rotations (PGR in mrad/s2) for earthquakes with magnitude M ≥ 4.0 in Greece and broader area. The list of earthquakes includes events of the last 30 days. Seismological data are derived in real-time from the Seismological Laboratory of the University of Athens. Ground Shaking Maps are produced automatically without human intervention. Events may have not been reviewed by a seismologist. The algorithm is written and developed in MATLAB environment. The calculation of PGA and PGR is based on various studies calibrated for Greece, as well as recorded data.

Current version of algorith: v6.0. Version v1.0 was originally developed under the framework of the project GRECO-RISKS Hellenic Natural-Hazards-Risk-Management System of Systems

During the HELPOS project the algorithmm was substantially updated. A short guide on how to read the website and earhtqauke reports can be found here. Information about the algortihm and the process can be found in the following references.

Please read carefully copyright and disclaimer terms. Use with your own responsibility.

How to cite:

  • Sakkas, G., Kouskouna, V., Kaviris, G., Sakellariou, N., and Misailidis, I. (2019). Real-Time Shaking Maps of PGA and PGR in Greece. Proceedings of the 15th International Congress of the Geological Society of Greece. Athens, 22-24 May 2019.
  • Sakkas, G., Kouskouna, V., Kaviris, G., Sakellariou, N., and Misailidis, I. (2018). A Real-Time PGA and PGR Distribution Application or Greece. 36th General Assembly of the European Commission, 2-7 September 2018, Valletta-Malta (Poster Session).
  • Sakkas, G. (2016). Calculation and analysis of the seismic motion rotational components in Greece.

For questions please contact V. Kouskouna or G. Sakkas.

Selected Earthquake Events of Greece

Larisa Mw 6.1 (March 2020, revised event)

Larisa Mw 6.3 (March 2020, revised event)

Samos Mw 6.9 (October 2020, revised event)

Athens Mw 5.1 (July 2019, revised event)

Zakinthos Earthquake (October 2018, revised event)

Kos Earthquake Mw 6.6 (July 2017, revised event)

Mitilini Earthquake Mw 6.3 (June 2017, revised event)

Konitsa earthquake Mw 5.3 (October 2016)

Pyrgos Earthquake Mw 5.1 (February 2016)

Leukada Earthquake Mw 5.9 (November 2015)

Kasos-Karpathos Earthquake Mw 6.1 (April 2015)

Copyright: This web page and all content are owned by the authors and the University of Athens. The contents can be used for scientific purposes only, quoting the reference indicated above. Any commercial and profit use is explicitly forbidden unless there is a written permission of the authors. The data cannot be used, even partly, for serving as input in the compilation of other databases or catalogues or webpages without the written permission of the authors. It is forbidden to reproduce the web page, even partly, or to use it for establishing copies of the original unless there is a written permission of the authors.
Disclaimer: Although the authors and the University of Athens make every possible effort to supply the best available information, no warranty, expressed or implied, is provided as to the accuracy, completeness and reliability of the data supplied. Users are cautioned to consider carefully the nature of the data content before using it for decisions that concern personal or public safety or in relation with business involving substantial financial or operational consequences. Conclusions drawn from this data, or actions undertaken on the basis of its content, are the sole responsibility of the user.