Parametric table of the ITA18 GMM for PGA, PGV and Spectral Acceleration ordinates

The ITA18 flatfile is a parametric table which contains verified and reliable metadata and intensity measures of manually processed waveforms used to derive the ITA18 ground motion model (Lanzano et al. 2019a). The flat-file is constituted by the data included in ITACA v2.3 up to 2018 December 31st. Moreover, it is integrated with records of 12 wordwide (global) events (3 Turkey, 2 Japan, 2 New Zealend, 2 California, 1 Iceland, 1 Iran, and 1 Greece). If the earthquakes are recordd at the Italian boundaries, the records of the networks of the neighbouring countries, such as France, Switzerland, Slovenia, Albania, and Montenegro, are also added in order to improve the spatial and azimuthal sampling of the events. All the wavefors of this dataset were manually processed according to the standard ITACA scheme, described in Paolucci et al. (2011) and Puglia et al. (2018). The flat-file of the ITA18 records is formatted consistently with the Engineering Strong Motion flat-file (Lanzano et al. 2019b). The flat-file includes 5607 records, relative to 146 earthquakes and 1657 stations. ITA18 is the primary source of information of the ground-motion model of Italy (Lanzano et al., 2019a), which is valid for events in active shallow (event depth < 30 km) crustal regions; i.e. different regimes are excluded (volcanic events or subduction events in the southern Tyrrhenian sea).