Description and objectives

The MARADONA research project represents a comprehensive endeavor aimed at crafting dynamic multi-hazard risk maps and devising methodologies for optimal multi-objective strategies to mitigate risks. In the context of the framework of the WP7 of the RETURN Spoke 3, this project aims at contributing to risk management by integrating state-of-the-art methodologies in the evaluation of risks at an urban or sub-regional scale.

At the heart of this investigation lies seismic hazard and its potential catastrophic implications, including ripple effects triggered by seismic occurrences. The project’s methodology involves a trial implementation in a benchmark anthropized area in ltaly, encompassing the creation of shaking maps, vulnerability models for buildings and infrastructure, and exposure models for socio-economie losses. lt tackles the challenge of prioritizing actions against diverse natural hazards by crafting a uniform multi-risk framework and methodology for optimal intervention strategies.

By integrating time dynamics into risk analysis, the project transcends the constraints of static methods, offering a more precise depiction of evolving risk conditions aver time. This approach aligns with the objective of constructing resilient urban landscapes capable of adapting to and mitigating various risks aver prolonged periods.

Dynamic risk maps are essential tools not only driving resource allocation policies and seismic retrofitting measures but also ensuring financial sustainability while curbing socio-economie repercussions of earthquakes.

At the core of this research is the customization and refinement of seismic fragility models to mirror the dynamic behavior of various structures and infrastructures in the specified region. lt involves formulating vulnerability models far different building types, bridges, and industriai facilities, accounting for multiple uncertainties. The amalgamation of diverse state-dependent fragility and loss functions through logie tree approaches addresses mainshock-aftershock sequences, providing comprehensive scenario-based estimations of risk.

Moreover, the project emphasizes the socio-economie impact of natural disasters on macroeconomie variables such as: i) human capitai ( knowledge, skills); ii) business – production factors and production outcome (physical capitai: equipment and machinery used in production processes, warehouses, etc.; labour: percentage of employed; output: production and value-added of different productive sectors in the studied area); iii) State (extraordinary government interventions; healthcare spending per capita; spending on infrastructures per capita; education spending per capita; social spending per capita; iv) citizens (incarne per capita; social and cultura! capitai variables). lt underscores the significance of multi-faceted exposure models that consider both physical infrastructure exposure and long-lasting socio-economie implications post-disaster event. The research also investigates cascading effects resulting from seismically induced phenomena like soil liquefaction and triggering landslides, exploring their socio-economie impacts on the affected region and population.

Additionally, the project delves into the assessment of disruptions to industriai facilities caused by earthquakes, evaluating direct structural damage and subsequent recovery. Furthermore, it appraises indirect losses arising from interruptions in transportation networks, employing a performance-based methodology to gauge delays and their consequences.

In conclusion, the MARADONA research project displays potential in enhancing risk management by formulating dynamic multi-hazard risk maps and optimal multi-objective interventi on strategies. lts comprehensive approach, integrating seismic hazards, vulnerability, and socio-economie factors, offers a sturdy framework far mitigating risks and building resilient urban landscapes. Overall, the effectiveness of the research project lies in its comprehensive approach, leveraging diverse methodologies, models, and interactive maps to understand, assess, and mitigate seismic hazard and the associateci risks on infrastructure, socio-economie aspects, and decision­ making processes.