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2026-07-20T00:00:00 Science et technologie Science and technology Scienza e tecnologia Ciencia y tecnología Wissenschaft und Technologie The ASI dataset is a table containing the Acceleration Spectrum Intensity (ASI) computed for 1,222 million grid points in Italy. For each node of the grid, the 5%-damped elastic acceleration response spectrum was computed using the ESM REXEL-target-spectrum Web-Service (https://esm-db.eu/esmws/rexel-target-spectrum/1/) and according to the Italian Building Code, also considering the corresponding subsoil category and topographic class. The ASI parameter was evaluated as its integral average and was estimated over three overlapping period ranges (0.1-0.5s, 0.4-0.8s, 0.7-1.1s). The continuous ASI values were, subsequently, classified into five seismic hazard classes. Istituto Nazionale di Geofisica e Vulcanologia (INGV) N/A terremoti Acceleration Spectrum Intensity (ASI) values for Italy in three structural period ranges (0.1-0.5s, 0.4-0.8s, 0.7-1.1s) 1.0 ingv_1222 INGV INGV ingv Istituto Nazionale di Geofisica e Vulcanologia 10.13127/asi123 MULTIPOLYGON (((6.6266 47.0933, 18.5218 47.0933, 18.5218 35.4943, 6.6266 35.4943, 6.6266 47.0933))) {"type": "MultiPolygon","coordinates": [[[ [6.6266,47.0933], [18.5218,47.0933], [18.5218,35.4943], [6.6266,35.4943], [6.6266,47.0933] ]]]} 2026-07-01T00:00:00 Istituto Nazionale di Geofisica e Vulcanologia (INGV) http://www.ingv.it/it/ ingv