The NOAFAULTs database of active faults of Greece was first published in 2013 (versions 1.0 & 1.1; http://dx.doi.org/10.12681/bgsg.11079). The version 2.1 was published in 2018 http://doi.org/10.5281/zenodo.3483136). Version 3.0 was published in 2020 http://doi.org/10.5281/zenodo.4304613 Version 4.0 was published in 2022 https://zenodo.org/record/6326260 NOAFAULTs was created towards compiling a digital database of fault geometry and additional attributes (kinematics, slip rate, associated seismicity etc.) primarily to support seismicity monitoring at the National Observatory of Athens (NOA). It has been constructed from published fault maps in peer-reviewed journals since 1972 while the number of the scientific papers that have contributed with fault data in version 5.0 is 140. The standard commercial software ARCGIS has been used to design and populate the database. The fault layer was produced at NOA by on-screen digitization of fault traces at the original map-scale and is available through our web portal application https://arcg.is/04Haer supported by ESRI. In this version, a number of 2916 active faults are included. 91% of the active faults are normal faults, 6% are strike-slip faults and only 3% represent the reverse faults. Also, reliable data on slip rates are available for 215 faults. Data on instrumental and historical seismicity are linked to 175 and 132 active faults, respectively. In addition, a) surface-rupturing geological data and b) data on the proximity of epicentres of strong seismic events to the traces of active faults allows the identification of 111 rupturing faults (seismic faults) that included in this version of the database. The NOAFAULTs database shows that nearly 54% of its active faults imply high seismic risk level in the broader area of Greece. These active faults can generate surface faulting or strong ground motions that can cause serious damage to buildings and infrastructures and therefore represent a significant hazard, particularly in the densely populated and industrialized areas of Greece.

{"references": ["Ganas A., Oikonomou I.A. and Tsimi Ch, 2013. NOAfaults: a digital database for active faults in Greece. Bulletin of the Geological Society of Greece, vol. 47 (2), 518-530, \u0394\u03b5\u03bb\u03c4\u03af\u03bf \u0395.\u0393.\u0395., \u03c4\u03cc\u03bc\u03bf\u03c2 XLVII - 13o \u0394\u03b9\u03b5\u03b8\u03bd\u03ad\u03c2 \u03a3\u03c5\u03bd\u03ad\u03b4\u03c1\u03b9\u03bf \u03c4\u03b7\u03c2 \u0395\u03bb\u03bb\u03b7\u03bd\u03b9\u03ba\u03ae\u03c2 \u0393\u03b5\u03c9\u03bb\u03bf\u03b3\u03b9\u03ba\u03ae\u03c2 \u0395\u03c4\u03b1\u03b9\u03c1\u03af\u03b1\u03c2, \u03a7\u03b1\u03bd\u03b9\u03ac, 5-8 \u03a3\u03b5\u03c0\u03c4\u03b5\u03bc\u03b2\u03c1\u03af\u03bf\u03c5 2013 p.518-530, http://dx.doi.org/10.12681/bgsg.11079", "Ganas, A., Tsironi, V., Kollia, E., Delagas, M., Tsimi, Ch., Oikonomou, Ath. 2018. Recent upgrades of the NOA database of active faults in Greece (NOAFAULTs). 19th General Assembly of WEGENER, September 2018, Grenoble, sciencesconf.org:wegener2018:219400"]}

The following contributors are gratefully acknowledged: Ms Varvara Tsironi MSc, Ms Eirini Efstathiou MSc, Ms Elisavet Kollia MSc, Ms Christina Tsimi MSc, Mr. Sotiris Valkaniotis PhD, Mr George Evangelou, Mr Michael Delagas MSc, Ms Athanassia Oikonomou, Ms Fotini Kounavi MSc, Ms Vasiliki Kanavou, Ms Emmanuella Konstantakopoulou, Mr Vassilios Georgakopoulos and Mr Nikolaos Madonis.