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As infrastructure faces the consequences of climate change there is an urgent need for monitoring methodologies that can provide accurate and timely information to the stakeholders and decision makers in order to mitigate the risk and ensure the safety. According to the World Meteorological Organization the last decade has been recorded as the warmest period in human history. As a consequence, particularly high temperatures and frequent weather extremes (drought, floods, etc.) jeopardize the infrastructure safety. At the same time, the need for reliable, cost-efficient and globally applied infrastructure monitoring methodologies is even more crucial in areas with high seismicity and or volcanic activity.In this framework the current project, named “PROION”, focuses on the infrastructure monitoring in the “Enceladus” Hellenic supersite. Τhis very active tectonic and seismic area includes geographically:the urban centers of Athens, Corinth and Patras (> 50% of the country's population), some of the most important archaeological monuments (Ancient Olympia and Mycenae) and some very important infrastructures such as Mornos and Evinos dams, Rio-Antirrio Bridge etc. The Enceladus Supersite area presents the highest seismicity in Europe, the highest recorded ground acceleration in Greece(0.77g) and a very high frequency of landslides.The aim of the project is the development of a platform for the continuous monitoring of high importance infrastructures such as public buildings and dams. The methodology combines instrumental and remote sensing measurements along with fuzzy logic networks methods and machine learning algorithms. Specifically, measurements obtained by three-axis accelerometers, low cost GNSS receivers and Persistent Scatterer Interferometry are fused and validated with high-precision 3D reference data derived from TLS surveys and UAV campaigns. The processing is based on soft computing algorithms while very accurate deformation maps are utilized for making decision about the current and the future state of each infrastructure. “PROION” project is financially supported by the European Union and the Hellenic government. «Acknowledgment: This research has been co‐financed by the European Union and Greek national funds through the Operational Program Competitiveness, Entrepreneurship and Innovation, under the call RESEARCH – CREATE – INNOVATE (project code: T2EΔK-02396 Μultiparametric monitoring platform with micro-sensors of eNceladus hellenIc supersite)».

On 17th November 2015, a strong earthquake affected the southern part of the Lefkada Island, Greece. After the earthquake extensive translational debris slides triggered cross most of west coast of the island in a distance of about 15 km. The majority of these slides concentrated at Egremni beach which is a famous touristic destination. The cliff is crossed by the Cephalonia Fault Zone and this is considered as a major factor provoking the steep slope, large-scale co-seismic and post-seismic mass wasting and disturbance of the forest of the cliff. Seven years after the 2015 event, the cliff remains at retreat due to limited forestation, seismicity and storms in the area. Monitoring of the cliff was performed between 2015 and 2021 including extensive field measurements, unmanned aerial vehicle (UAV) flight campaigns and a sediment trap. The high-resolution images acquired by the UAV were used for the creation of orthophoto maps and digital surface models (DSMs) of the cliff. The data indicates that Egremni cliff is slowly entering a stage of equilibrium due to climatic forcing, alongside minor seismicity and absence of forestation. Mass-wasting processes remained significant across the Lefkada west coast seven years after the 2015 earthquake sequence.