Open Scientific Data: A Case Study on the Phoenix Drainage Basin (Greece) for Seismic and Flood Hazard Assessment
Description:
Natural hazards, such as earthquakes and floods pose significant threats to human safety and infrastructure worldwide. The HOMEROS project advances hazard assessment by integrating seismic and flood analyses using Open Science practices. This study focuses on the Phoenix drainage basin in northern Peloponnese (Central Greece), at the Western Gulf of Corinth (WGoC), aiming to identify high-hazard areas and to evaluate the vulnerability of settlements in relation to the seismic and flood hazard. To promote Open Science and reproducibility, the HOMEROS project disseminates all validated datasets and analysis results via a dedicated Zenodo repository, each linked to funders’ repositories and assigned persistent identifiers (DOIs) with comprehensive metadata and version control. Initial releases include GIS-based flood and seismic hazard maps under CC BY or CC BY-SA licenses, ensuring transparency, accessibility, and reusability. The datasets and the accompanying documentation for the seismic hazard and flood maps are hosted on Zenodo. The datasets also include shapefiles of rivers, drainage networks, road networks, and settlements for each study area. Seismic hazard is assessed via the probabilistic method. PGA and PGV results are obtained for return periods of 475 and 950 years through a comprehensive logic tree approach that integrates both source areas and faults alongside multiple Ground Motion Models (GMMs). Elevated seismic hazard levels are observed to the northeast of the basin, closer to the (WGoC). Areas with the most pronounced flooding hazard are predominantly situated in the northern and central parts of the drainage basin. In addition, 34% of settlements are in areas of high hazard flooding.
Acknowledgements: The authors acknowledge the OSCARS project, which has received funding from the European Commission’s Horizon Europe Research and Innovation programme under grant agreement No. 10112975
Session: Advancing Seismic Hazard and Risk Assessment through Multi-Disciplinary Approaches [Poster]
Type: Poster
Date: 4/15/2026
Presentation Time: 08:00 AM (local time)
Presenting Author: George Kaviris
Student Presenter: No
Invited Presentation:
Poster Number: 54
Authors
George Kaviris Presenting Author Corresponding Author gkaviris@geol.uoa.gr National and Kapodistrian University of Athens |
Angelos Zymvragakis azymvragakis@geol.uoa.gr National and Kapodistrian University of Athens |
Ioannis Spingos ispingos@geol.uoa.gr National and Kapodistrian University of Athens |
Stefania-Alexandra Andriopoulou-Mounteanou s_andriopouloumounteanou@ac.upatras.gr University of Patras |
Zacharo Paliou zaxhpalhou@gmail.com University of Patras |
Hariklia Skilodimou hskilodimou@upatras.gr University of Patras |
George Bathrellos gbathrellos@upatras.gr University of Patras |
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Open Scientific Data: A Case Study on the Phoenix Drainage Basin (Greece) for Seismic and Flood Hazard Assessment
Category
Advancing Seismic Hazard and Risk Assessment through Multi-Disciplinary Approaches