Volcanic Earthquakes Ground Motion Datasets

Description

Volcanic regions are characterized by complex seismic activity associated with both tectonic structures and magmatic processes. This so-called volcano-tectonic seismicity shows a wide variability in terms of occurrence rate, magnitude range, focal depth, and spatial distribution, reflecting the dynamic nature of active volcanic systems. Although these earthquakes are typically of moderate magnitude, they can generate significant ground shaking, especially in near-source areas, where shallow events may produce strong local effects and contribute to seismic hazard.
The systematic collection, processing, and dissemination of ground-motion data in volcanic environments are therefore essential to improve the understanding of seismic hazard and its variability in these areas. In particular, the availability of homogeneous datasets integrating waveform-derived intensity measures and metadata enables advanced seismological and engineering analyses, which are often limited by the scarcity of data in volcanic contexts within standard strong-motion databases.

This web portal provides access to a collection of datasets specifically developed for the study of ground motion generated by volcano-tectonic earthquakes. The datasets include parametric tables of intensity measures (e.g., PGA, PGV, spectral ordinates) and associated metadata, derived from uniformly processed seismic recordings. These products are designed to support a wide range of applications, including the empirical characterization of ground motion in volcanic areas, the testing and calibration of ground-motion prediction models, the development of regionalized and non-ergodic approaches, the estimation of empirical amplification factors for seismic microzonation studies, and the investigation of source, path, and site effects, including possible anisotropic propagation patterns.
The portal is conceived as a dynamic and expandable repository, where additional datasets from other volcanic regions, including international case studies, may be progressively integrated. All products are developed following consistent processing procedures and are disseminated according to FAIR principles, ensuring accessibility, interoperability, and reusability for both research and applied purposes.

Acknowledgments

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License

The datasets are 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 product associated with the ground motion in the volcanic areas, such as parametric tables containing intensity measures and associated earthquake, station and waveform metadata. Although all the parameters 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.

References

• http://doi.org/10.1029/2007GL030041

Contacts

Scientific: giovanni.lanzano@ingv.it
Technical: chiara.felicetta@ingv.it