Flatfile of ground motion parameters from HIC (Hybrid Integral Composite) kinematic rupture scenarios in Central Italy

Description

This page provides details on the flatfile collecting synthetic ground motion parameters from kinematic rupture scenarios for Central Italy.
The scenarios are generated using the Hybrid Integral Composite (HIC) model by Gallovič and Brokešová (2008) for a hypothetical representative event of Mw 6.2 (Amatrice 2016-like), in a shallow extensional tectonic setting.
The synthetic seismograms are computed in 1D crustal velocity models, including region-specific profiles and creating thousands of rupture scenarios by varying the source parameters, i.e.: i) the fault area, ii) the nucleation point position, iii) the slip distribution, iv) the rupture velocity, and v) the subsource corner frequencies. The resulting distributions of synthetic spectral accelerations, as discussed in Čejka et al (2024), agree with the empirical ground motion model of Sgobba et al. (2021) for Central Italy in terms of the mean and total variability.

Figure: The eight slip distributions associated with the simulated rupture scenarios obtained by changing the distribution of sub-sources for fault sizes a) 25x12 km2 on the left and b) 20x10 km2 on the right. From Cejka et al (2024).

Products

Central Italy Synthetic HIC-flatfile: parametric table in CSV format (semicolon separated) containing spectral acceleration ordinates SA calculated assuming 5% damping in the range of periods 0.2-10 s along with associated metadata; it also includes supporting dictionaries for some fields of the table.

Citation
If you use data available in the flatfile, cite as:
Čejka F., Sgobba S., Pacor F., Felicetta C., Valentová L., and Gallovič F. (2024). Flatfile of ground motion parameters from HIC kinematic rupture scenarios in Central Italy. Istituto Nazionale di Geofisica e Vulcanologia (INGV). https://doi.org/10.13127/hic-scenarios

  • HIC flatfile
  • md5 checksum: d93c45df5dc11f38eb874e58e5ec8a99
References
  • Čejka F., Sgobba S., Pacor F., Felicetta C., Valentová L. , Gallovič F. (2024) Constraining between-event variability of kinematic rupture scenarios by empirical ground motion model: a case study in Central Italy. Bulletin of the Seismological Society of America, 114 (4): 2138-2150. https://doi.org/10.1785/0120230251
  • Sgobba S., Lanzano G., Pacor F. (2020) Empirical nonergodic shaking scenarios based on spatial correlation models: An application to Central Italy. Earthquake Engng Struct Dyn. 50:60-80 https://doi.org/10.1002/eqe.3362
  • Gallovič F., Brokešová J. (2008) Probabilistic aftershock hazard assessment II: application of strong ground motion simulations. J Seismol 12, 65-78. https://doi.org/10.1007/s10950-007-9070-2

Acknowledgments

This study has been developed within the Istituto Nazionale di Geofisica e Vulcanologia (INGV) research project “Ricerca Libera” 2021 project HSE-GMM (S. Sgobba) “A Hybrid Simulation- Empirical approach to model variability of ground motion in near-source region”. The project was also supported by the Czech Science Foundation (project 23-06345S) and Charles university project SVV 115–09/260581, as well as by INGV in the frame of the project SECURE (Regional-Scale Earthquake Ground Motion PrediCtions ThroUgh Pyhsics-based and EmpiRical ApproachEs: A Case study Central Italy) within Pianeta Dinamico (Working Earth) - Geosciences for the Understanding of the Dynamics of the Earth and the Consequent Natural Risks (CUP code D53J19000170001), funded by the Italian Ministry of University and Research (MIUR).

License

Creative Commons License The flatfile is licensed under the terms of the "Creative Commons Attribution 4.0 International (CC BY 4.0)" License. This means that you are free to share (reproduce, distribute, communicate to the public, publicly display, perform and play this material in any medium and format) and adapt (remix and build upon the material for any purpose, even commercially). The licensor cannot revoke these freedoms as long as you follow the license terms. You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.

Disclaimer

This site provides access to the parametric tables of the HIC-based rupture scenarios and associated spectra for the Central Italy region. Although all data have been checked by analysts, no warranty, implicit or explicit is attached to the data. Every risk due to the improper use of data or the use of inaccurate information is assumed by the user.