Seismic site effects in the Red Zone of Amatrice hill detected via the mutual sustainment of experimental and computational approaches

摘要: This paper presents the results of numerical analyses ground motion in Red Zone sector Amatrice hill, violently struck by 2016–2017 Central Italy seismic sequence. The methodologies used processing data to define model are firstly described. obtained from computational then presented and discussed comparing them with experimental set weak recordings. Computational were performed via both a 2D-numerical FEM pseudo-three-dimensional hybrid (SiSeRHMap) which develops multispectral maps taking into account topographic effects. Starting available geological geophysical measurements, an original specific subsoil GIS was developed utilised perform analyses. preliminary map for fundamental periods computed is good agreement data. A restricted motions acquired accelerometric station located reference site as input analyses, while signals corresponding events recorded at top hill targets reliability evaluation analysis outputs. In area characterized complex topographical context, shows performance compared 2D-FEM prediction response. Agreement generally also regards results, relation amplitude shape spectral amplification that change depending on sector. Considering predictive models, high amplification, due effects, observed performing back-simulation 24th August 2016 main shock. highlight maximum factors, based definition Housner intensity, occur interval 0–0.5 s covering period range buildings this area.