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Antonella Congacha
Ph.D. Student in Space Science and Technology, University of Trento & University of Calabria
About Me
My research activity consists of the description of extreme events like tsunamis using a high-resolution numerical simulation. In an specific way I explore multiple risk scenarios associated with Marsili-induced tsunamis. To model tsunami behaviour, I used the Shallow Water Equations (SWEs), a set of hyperbolic partial differential equations commonly used to simulate large-scale fluid flows. Solutions are obtained using numerical techniques such as the finite volume and cut-cells methods. The Surface Gradient Method (SGM) is used on it for its robustness and accuracy in representing complex topographies and geophysical flows. The numerical simulation developed couples SGM with high-order shock-capturing techniques and validates the implementation against standard benchmark tests. The model solves the depth-averaged Shallow Water Equations using a shock-capturing HLL scheme combined with the cut-cell technique to represent coastal boundaries accurately. Realistic bathymetric data were employed to simulate tsunami propagation over an area of approximately 69 km², encompassing northern Sicily, western Calabria, and the Aeolian Islands, considering as the source of this natural hazard, the underwater volcano, Marsili.