A Digital Twin for GEOphysical extremes (DT-GEO) is a European project that aims to analyse and forecast the impact of tsunamis, earthquakes, volcanoes, and anthropogenic seismicity. Main objective of DT-GEO is to deploy a pre-operational prototype of Digital Twin, implemented through 12 self-contained Digital Twin Components (DTCs) addressing specific hazardous phenomena, for its future integration into the Destination Earth initiative. DTCs will combine real-time data streams and high-fidelity models to conduct precise data-informed early warning systems, forecasts, and hazard assessments across multiple time scales. Also foreseen is integration of project assets and outcomes into the European Plate Observing System (EPOS) and HPC/virtual cloud computing (EuroHPC) Research Infrastructures.

Section 2.5 is involved into the development of the Digital Twin Component DTC-T1 implementing the workflow of the novel tsunami forecasting methodology coined Probabilistic Tsunami Forecasting (PTF). The workflow is planned for employment in the Tsunami Early Warning Centres. It provides probabilities of exceedance of given tsunami intensities at given coastal locations. PTF performs data assimilation of (near-) real time earthquake and tsunami observations into the tsunami simulation workflow operating ensembles of precomputed or on-the-fly simulated tsunami propagation scenarios.