The quest for reference stations at the National Observatory of Athens, Greece

Ktenidou, Olga-Joan; Pikoulis, Erion-Vasilis; Papageorgiou, Antonia; Gkika, Fevronia; Liakopoulos, Spyros; Cekinmez, Ziya; Savvaidis, Panagiotis; Fragouli, Kalliopi-Elli; Chalaris, Fanis; Evangelidis, Christos P.

doi:10.5194/nhess-26-41-2026

Articles | Volume 26, issue 1

https://doi.org/10.5194/nhess-26-41-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Harmonized seismic hazard and risk assessment for Europe

https://doi.org/10.5194/nhess-26-41-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 26, issue 1

Research article

|

13 Jan 2026

Research article |

| 13 Jan 2026

The quest for reference stations at the National Observatory of Athens, Greece

Olga-Joan Ktenidou, Erion-Vasilis Pikoulis, Antonia Papageorgiou, Fevronia Gkika, Spyros Liakopoulos, Ziya Cekinmez, Panagiotis Savvaidis, Kalliopi-Elli Fragouli, Fanis Chalaris, and Christos P. Evangelidis

Data sets

Supplemental material and full station flatfile to accompany "The quest for reference stations at the National Observatory of Athens, Greece" Olga-Joan Ktenidou et al. https://doi.org/10.5281/zenodo.14773307

National Observatory of Athens Seismic Network National Observatory of Athens, Institute of Geodynamics, Athens - NOA-GI https://doi.org/10.7914/SN/HL

NOA catalogue: Database of revised events since 01/01/2008 Institute of Geodynamics of the National Observatory of Athens http://bbnet.gein.noa.gr/HL/databases/database

Short summary

Greek seismic data are invaluable to global databases. Recordings from stations on rock (i.e. not soft deposits) are needed in seismology in order to define reference ground conditions and ground motions, which serve as the basis for all hazard calculations. However, very little knowledge exists on how rock stations in Greece behave. This is the first time the network of the National Observatory is studied systematically and multiparametrically to reveal the most adequate reference stations.