DOI: 10.5281/zenodo.10199520
title: Greek Tsunami Impact Database 1800-2020

description: Τhe Tsunami Impact Database of Greece covers the time period from AD 1800 to 2020. Sixteen tsunami events have been inserted so far in the database for the reference period. Most of the tsunami events were caused by earthquakes and only two have been triggered by gravitative marine slides.
For each tsunami event the database provides (1) Parameters of the Tsunami Sources, e.g. earthquakes or landslides, and (2) Tsunami Impact Data. Data for the sections (1) and (2) have been taken from several catalogues, papers, books, technical reports and other publications (see reviews, literature compilations or original observational data in Galanopoulos, 1957, 1960, Papadopoulos, 2003, Ambraseys, 1960, Papadopoulos et al., 2007, 2010, Dogan et al., 2019, 2021, Triantafyllou et al., 2021).  
The Parameters of the Earthquake Tsunami Sources include earthquake origin time, epicentral coordinates, focal depth, moment magnitude Mw, and earthquake maximum intensity Io. For the tsunamigenic earthquakes that occurred in the time interval from AD 1800 to 1899 source parameters have been taken from the SHEEC (Stucchi et al., 2013). For the post-1900 time period, earthquake source parameters have been adopted from the ISC-GEM (2023) catalogue or from the GCMT project (https://www.globalcmt.org/) for the post- 1975 time interval. The Parameters of the Landslide Tsunami Sources include date and geographical coordinates.  
For all sources the database include also the region and sub-region as well as the next categorization of the seismic source by following the categorization adopted within the pan-European tsunami projects GITEC (https://cordis.europa.eu/project/id/EV5V0175), GITEC-TWO (https://cordis.europa.eu/project/id/ENV4960297) and TRANSFER (https://cordis. europa.eu/project/id/37058): ER=earthquake, EL= earthquake landslide, ES= earthquake marine slide, GS= gravitative marine slide. A short description of each event is also provided and a reliability score, Rel, for the tsunami event is given in a 4-degree scale (for further explanations οn how this scale is arranged see in other publications, e.g. Papadopoulos, 2003).  
Depending on the data availability an effort has been made to introduce quantitative impact data to the extent it is possible (e.g., numbers of fatalities and injuries, numbers of buildings or vessels damaged, etc.). From the impact of a tsunami event the maximum tsunami intensity, K, has been estimated according to the 12-grade scale of Papadopoulos and Imamura (2001). For each tsunami event corresponding references (Ref) are also provided.
description: References
Ambraseys, N.N., 1960. The seismic sea-wave of July 1956 in the Greek Archipelago. Journal Geophysical Research, 65 (4), 1257-1265.
Dogan, G.G., Annunziato, A., G.A. Papadopoulos, Guler, H.G., Yalciner, A.C., Cakir, T.E., Sozdinler, C.O., Ulutas, E., Arikawa, T., Suzen, M.L., Guler, I., Probst,  P., Kânoğlu, U., Synolakis, C., 2019. The 20th July 2017 Bodrum-Kos Tsunami Field Survey. Pure and Appl. Geophys., 176, 2925–2949, 2019, https://doi.org/10.1007/s00024-019-02151-1
Dogan, G.G., Yalciner, A.C., Yuksel, Y. et al. 2021. The 30 October 2020 Aegean Sea Tsunami: Post-Event Field Survey Along Turkish Coast. Pure Appl. Geophys. 178, 785–812, https://doi.org/10.1007/s00024-021-02693-3
Galanopoulos, A. G., 1957.  The seismic sea-wave of 9 July 1956. Praktika Academy Athens, 32, 90-101 (in Greek with Engl. abstr.).  
Galanopoulos, A. G., 1960. Tsunamis observed on the coasts of Greece from Antiquity to present time. Ann. di Geof., 13, 369-386.
GCMT, 2021. Global Centroid Moment Tensors (https://www.globalcmt.org/)
International Seismological Centre, 2023. The ISC-GEM Global Instrumental Earthquake Catalogue, #Version 10.0-Released on 21 March 2023. Available online: https://doi.org/ 10.31905/D808B825  
Papadopoulos, G.A., 2003. Tsunami Hazard in the Eastern Mediterranean: Strong Earthquakes and Tsunamis in the Corinth Gulf, Central Greece. Natural Hazards 29, 437-464.
Papadopoulos, G. A., Daskalaki, E., Fokaefs, A., Giraleas, N., 2007. Tsunami Hazard in the Eastern Mediterranean: Strong Earthquakes and Tsunamis in the East Hellenic Arc and Trench System. Natural Hazards and Earth System Science, 7, 57–64.  
Papadopoulos G. A., Daskalaki, E., Fokaefs, A., Giraleas, N., 2010. Tsunami hazard in the Eastern Mediterranean Sea: strong earthquakes and tsunamis in the west Hellenic arc and trench system. Journal of Earthquakes & Tsunamis 4, 145–179.
Papadopoulos, G. A., Imamura, F., 2001. A proposal for a new tsunami intensity scale. Proc. Internat. Tsunami Symposium, Aug 7-10, 2001, Seattle, 569-577.
Stucchi, M. et al., 2013. The SHARE European Earthquake Catalogue (SHEEC) 1000–1899. Journal of Seismology, doi: 10.1007/s10950-012-9335-2.
Triantafyllou, I., Gogou, M., Mavroulis, S., Lekkas, E., Papadopoulos, G.A., Thravalos, M., 2021. The Tsunami Caused by the 30 October 2020 Samos (Aegean Sea) Mw7.0 Earthquake: Hydrodynamic Features, Source Properties and Impact Assessment from Post-Event Field Survey and Video Records. J. Mar. Sci. Eng., 9, 68. https://doi.org/10.3390/jmse9010068.
description: The contribution by Mrs G. Diakogianni,  Mrs A. Fokaefs and  Mrs A. Papageorgiou is acknowledged.