On the Development of Multi-hazard Map at the Lefkada Island (Western Greece) by Combining Seismic and Landslide Hazard Maps
Description:
Developing natural hazard maps is essential for informed urban planning and risk mitigation. The present research examines Lefkada Island, western Greece, which is highly exposed to seismic activity and landslide hazards. Two hazard maps were developed for the island, one addressing seismic and the other landslide hazard. The HOMEROS project seeks to improve how these multi‑hazard risks are assessed by advancing methods in seismology, geology, and geomorphology. Using modern big‑data technologies and Open Science principles, the project aims to standardize research practices, boost collaboration, and enhance our ability to understand and predict natural hazards. Focusing on areas prone to strong earthquakes, and landslides in Greece, HOMEROS develops detailed earthquake catalogues and analyzes ground deformation to better evaluate seismic hazard. It also deepens knowledge of landslide hazard, supporting more effective mitigation and preparedness strategies. Seismic hazard was evaluated using a probabilistic method. Results were obtained by constructing a logic tree framework that considers area source models and active faults. Seismicity data were obtained through multiple techniques, and several Ground Motion Models were considered for both PGA and PGV. Existing landslides within the study area, along with multiple factors influencing their occurrence, were utilized to generate the landslide hazard map. Statistical analysis and Geographical Information System were used to support the evaluation of the selected factors and to produce a landslide hazard map. The findings indicate that areas most susceptible to landslides are primarily located in the western and central regions of the island. The combination of seismic and landslide hazard maps will be presented.
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: Hariklia D. Skilodimou
Student Presenter: No
Invited Presentation:
Poster Number: 47
Authors
Hariklia Skilodimou Presenting Author Corresponding Author hskilodimou@upatras.gr University of Patras |
Stefania-Alexandra Andriopoulou-Mounteanou s_andriopouloumounteanou@ac.upatras.gr University of Patras |
Zacharo Paliou zaxhpalhou@gmail.com University of Patras |
George Bathrellos gbathrellos@upatras.gr University of Patras |
Angelos Zymvragakis azymvragakis@geol.uoa.gr National and Kapodistrian University of Athens |
Ioannis Spingos ispingos@geol.uoa.gr National and Kapodistrian University of Athens |
George Kaviris gkaviris@geol.uoa.gr National and Kapodistrian University of Athens |
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On the Development of Multi-hazard Map at the Lefkada Island (Western Greece) by Combining Seismic and Landslide Hazard Maps
Category
Advancing Seismic Hazard and Risk Assessment through Multi-Disciplinary Approaches