Physical stratigraphy and geotechnical properties controlling the local seismic response in explosive volcanic settings: the Stracciacappa maar (central Italy)
| Autor: | M. Moscatelli 1, G. Vignaroli 1, 2, A. Pagliaroli 3, R. Razzano 1, 4, A. Avalle 1, 5, I. Gaudiosi 1, S. Giallini 1, 3, M. Mancini 1, M. Simionato 1, P. Sirianni 1, G. Sottili 6, J. Bellanova 7, G. Calamita 7, A. Perrone 7, S. Piscitelli 7, G. Lanzo 4 |
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| Přispěvatelé: | Moscatelli M., Vignaroli G., Pagliaroli A., Razzano R., Avalle A., Gaudiosi I., Giallini S., Mancini M., Simionato M., Sirianni P., Sottili G., Bellanova J., Calamita G., Perrone A., Piscitelli S., Lanzo G. |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Sabatini Volcanic District
Monti Sabatini 0211 other engineering and technologies Borehole 02 engineering and technology 010502 geochemistry & geophysics 01 natural sciences Seismic wave Passive seismic Maar volcanoes local seismic response Geotechnical engineering Seismic risk 0105 earth and related environmental sciences 021110 strategic defence & security studies Seismic microzonation 2D numerical simulations Geology Volcanic maar Geotechnical Engineering and Engineering Geology Maar Tectonics Ground motion amplification Stratigraphy Italy Local seismic response 2D numerical simulation |
| Zdroj: | Bulletin of engineering geology and the environment 80 (2021): 179–199. doi:10.1007/s10064-020-01925-5 info:cnr-pdr/source/autori:M. Moscatelli 1, G. Vignaroli 1,2, A. Pagliaroli 3, R. Razzano 1,4, A. Avalle 1,5, I. Gaudiosi 1, S. Giallini 1,3, M. Mancini 1, M. Simionato 1, P. Sirianni 1, G. Sottili 6, J. Bellanova 7, G. Calamita 7, A. Perrone 7, S. Piscitelli 7, G. Lanzo 4/titolo:Physical stratigraphy and geotechnical properties controlling the local seismic response in explosive volcanic settings: the Stracciacappa maar (central Italy)/doi:10.1007%2Fs10064-020-01925-5/rivista:Bulletin of engineering geology and the environment (Print)/anno:2021/pagina_da:179/pagina_a:199/intervallo_pagine:179–199/volume:80 |
| DOI: | 10.1007/s10064-020-01925-5 |
| Popis: | Nowadays, policies addressed to prevention and mitigation of seismic risk need a consolidated methodology finalised to the assessment of local seismic response in explosive volcanic settings. The quantitative reconstruction of the subsoil model provides a key instrument to understand how the geometry and the internal architecture of outcropping and buried geological units have influence on the propagation of seismic waves. On this regard, we present a multidisciplinary approach in the test area of the Stracciacappa maar (Sabatini Volcanic District, central Italy), with the aim to reconstruct its physical stratigraphy and to discuss how subsoil heterogeneities control the 1D and 2D local seismic response in such a volcanic setting. We first introduce a new multidisciplinary dataset, including geological (fieldwork and log from a 45-m-thick continuous coring borehole), geophysical (electrical resistivity tomographies, single station noise measurements, and 2D passive seismic arrays), and geotechnical (simple shear tests performed on undisturbed samples) approaches. Then, we reconstruct the subsoil model for the Stracciacappa maar in terms of vertical setting and distribution of its mechanical lithotypes, which we investigate for 1D and 2D finite element site response analyses through the application of two different seismic scenarios: a volcanic event and a tectonic event. The numerical modelling documents a significant ground motion amplification (in the 1–1.5 Hz range) revealed for both seismic scenarios, with a maximum within the centre of the maar. The ground motion amplification is related to both 1D and 2D phenomena including lithological heterogeneity within the upper part of the maar section and interaction of direct S-waves with Rayleigh waves generated at edges of the most superficial lithotypes. Finally, we use these insights to associate the expected distribution of ground motion amplification with the physical stratigraphy of an explosive volcanic setting, with insights for seismic microzonation studies and local seismic response assessment in populated environments. |
| Databáze: | OpenAIRE |
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