New technology in debris-flow modelling: A WebGIS integrated solution for TRENT2D

Successful debris-flow hazard management in mountain regions is often based on the use of mathematical models. However, advanced models are generally quite complex to be applied, not entirely user-friendly and require high-performing hardware. Overcoming these drawbacks can lead to a wider diffusion of advanced modelling tools. In this work, a smart and easy-to-use modelling solution is proposed for the model TRENT2D, which simulates debris flows and hyperconcentrated flows over a mobile bed with a two-phase approach. TRENT2D was re-developed as a service and equipped with WebGIS technology. This solution transfers computational burden from local computers to a server and simplifies the management of georefer-enced inputs and outputs of the model. In addition, the new infrastructure was enriched with a BUWAL-type hazard-mapping procedure, allowing to model and evaluate hazard scenarios in a unique and complete work-ing environment.