Dual-proxy estimation of Vs30: the case study of the Marche Region (central Italy)
This study focuses on generating a shear-wave velocity averaged within the uppermost 30 m of the ground surface (Vs30) map for the Marche region (central Italy) using two commonly acknowledged proxies: topographic slope and lithological classification. The analysis is based on a comprehensive datase...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2024-12-01
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| Series: | Journal of Maps |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/17445647.2024.2349787 |
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| Summary: | This study focuses on generating a shear-wave velocity averaged within the uppermost 30 m of the ground surface (Vs30) map for the Marche region (central Italy) using two commonly acknowledged proxies: topographic slope and lithological classification. The analysis is based on a comprehensive dataset of geophysical tests from the Italian seismic microzonation dataset, employed as a training set. Through regression analysis, Vs30 values are modelled as a function of lithology and topographic slope, with a random effect accounting for the combination of these variables. The resulting Vs30 raster map illustrates the spatial distribution of shear-wave velocities across the region, offering a representation of the subsurface seismic characteristics essential for various applications, including local seismic hazard assessment, prediction of seismic ground motion parameters, microzonation mapping, real-time shakemap generation, and seismic design of engineering structures. |
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| ISSN: | 1744-5647 |