NOAFAULTS KMZ layer Version 7.0

The NOAFAULTs database of active faults of Greece was first published in 2013 at BGSG (versions 1.0 & 1.1; http://dx.doi.org/10.12681/bgsg.11079). Version 2.1 (see map below) 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 ; Version 5.0 was published in 2023 https://doi.org/10.5281/zenodo.8075517 ; Version 6.0 was published in 2024 https://zenodo.org/records/13168947 . NOAFAULTs was created towards compiling a digital database of fault traces, 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 7.0 is 158. 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 (as drawn by the reference paper it was taken from) and is available through our web portal application https://arcg.is/04Haer supported by ESRI.

In this version, in order to streamline the process, avoid inconsistencies during data input, and ensure a homogeneous database, we decided to automatically calculate certain fields from the attribute table. Specifically, the Strike and Dip-Direction fields were derived programmatically. First, the digitization of the faults was carried out to align with the dip-direction of each. With this method of digitization, the user also could apply a symbol to each fault that correctly corresponds to its dip-direction, enhancing the accuracy and interpretability of the fault representation. Then, by calculating the line bearing of the fault and applying a ±180° function to the result, the Strike was determined. Subsequently, using the calculated strike and appropriate functions, the Dip-Direction of each fault was generated. If the dip angle was not provided by the scientific source, we assigned standard values: 60° for Normal faults, 30° for Reverse faults, and 90° for Strike-Slip faults. Consequently, the Rake field was assigned values of -90° for Normal, 90° for Reverse, and 0° or 180° for Strike-Slip faults, depending on relative sense of motion.

Four new