Extended Tromograph Surveys for a Full Experimental Characterisation of the San Giorgio Cathedral in Ragusa (Italy)
Geophysical surveys are widely used to reconstruct subsoil seismo-stratigraphic structures with a non-invasive approach. In this study the geophysical surveys were carried out with the aim to characterise the San Giorgio Cathedral in Ragusa (Italy) and the area on which it is built from a dynamic po...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/2/889 |
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| author | Giacomo Imposa Sabrina Grassi Alberto Barontini Gabriele Morreale Salvatore Russo Paulo B. Lourenço Sebastiano Imposa |
| author_facet | Giacomo Imposa Sabrina Grassi Alberto Barontini Gabriele Morreale Salvatore Russo Paulo B. Lourenço Sebastiano Imposa |
| author_sort | Giacomo Imposa |
| collection | DOAJ |
| description | Geophysical surveys are widely used to reconstruct subsoil seismo-stratigraphic structures with a non-invasive approach. In this study the geophysical surveys were carried out with the aim to characterise the San Giorgio Cathedral in Ragusa (Italy) and the area on which it is built from a dynamic point of view. A 3D subsoil model was realised through the integration of two active (i.e., seismic tomography and multichannel analysis of surface waves) and one passive seismic technique (horizontal to vertical spatial ratio). The instrumentation used for the latter method consists of a tromograph (Tromino<sup>®</sup>), which is also employed for the characterisation of the building, focusing on the façade and the dome, by means of an ambient vibration test, processed through the standard spectral ratio and frequency domain decomposition methods. Integration of the 3D model, showing the distribution of areas with different physicomechanical characteristics, enables identifying anomalies that are likely attributable to the remains of the ancient Byzantine church of San Nicola. Four lower modes mainly involving the two investigated macroelements are identified. The experimental results outline the advantages of the use of the tromograph both for soil and structural characterisation, especially for massive masonry buildings located in areas with high seismic hazard. |
| first_indexed | 2024-03-09T11:17:27Z |
| format | Article |
| id | doaj.art-9a1147a313b1405fbebfa773a68a6ec3 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T11:17:27Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-9a1147a313b1405fbebfa773a68a6ec32023-12-01T00:29:18ZengMDPI AGSensors1424-82202023-01-0123288910.3390/s23020889Extended Tromograph Surveys for a Full Experimental Characterisation of the San Giorgio Cathedral in Ragusa (Italy)Giacomo Imposa0Sabrina Grassi1Alberto Barontini2Gabriele Morreale3Salvatore Russo4Paulo B. Lourenço5Sebastiano Imposa6Department of Architecture Construction Conservation, University IUAV of Venice, Dorsoduro 2206, 30123 Venice, ItalyDepartment of Biological, Geological and Environmental Sciences—Earth Science Section, University of Catania, Corso Italia, 57, 95129 Catania, ItalyDepartment of Civil Engineering, ISISE (Institute for Sustainability and Innovation in Structural Engineering), University of Minho, 4800-058 Guimarães, PortugalDepartment of Biological, Geological and Environmental Sciences—Earth Science Section, University of Catania, Corso Italia, 57, 95129 Catania, ItalyDepartment of Architecture Construction Conservation, University IUAV of Venice, Dorsoduro 2206, 30123 Venice, ItalyDepartment of Civil Engineering, ISISE (Institute for Sustainability and Innovation in Structural Engineering), University of Minho, 4800-058 Guimarães, PortugalDepartment of Biological, Geological and Environmental Sciences—Earth Science Section, University of Catania, Corso Italia, 57, 95129 Catania, ItalyGeophysical surveys are widely used to reconstruct subsoil seismo-stratigraphic structures with a non-invasive approach. In this study the geophysical surveys were carried out with the aim to characterise the San Giorgio Cathedral in Ragusa (Italy) and the area on which it is built from a dynamic point of view. A 3D subsoil model was realised through the integration of two active (i.e., seismic tomography and multichannel analysis of surface waves) and one passive seismic technique (horizontal to vertical spatial ratio). The instrumentation used for the latter method consists of a tromograph (Tromino<sup>®</sup>), which is also employed for the characterisation of the building, focusing on the façade and the dome, by means of an ambient vibration test, processed through the standard spectral ratio and frequency domain decomposition methods. Integration of the 3D model, showing the distribution of areas with different physicomechanical characteristics, enables identifying anomalies that are likely attributable to the remains of the ancient Byzantine church of San Nicola. Four lower modes mainly involving the two investigated macroelements are identified. The experimental results outline the advantages of the use of the tromograph both for soil and structural characterisation, especially for massive masonry buildings located in areas with high seismic hazard.https://www.mdpi.com/1424-8220/23/2/889heritageHVSRseismic tomographyMASWtromographambient vibration testing |
| spellingShingle | Giacomo Imposa Sabrina Grassi Alberto Barontini Gabriele Morreale Salvatore Russo Paulo B. Lourenço Sebastiano Imposa Extended Tromograph Surveys for a Full Experimental Characterisation of the San Giorgio Cathedral in Ragusa (Italy) Sensors heritage HVSR seismic tomography MASW tromograph ambient vibration testing |
| title | Extended Tromograph Surveys for a Full Experimental Characterisation of the San Giorgio Cathedral in Ragusa (Italy) |
| title_full | Extended Tromograph Surveys for a Full Experimental Characterisation of the San Giorgio Cathedral in Ragusa (Italy) |
| title_fullStr | Extended Tromograph Surveys for a Full Experimental Characterisation of the San Giorgio Cathedral in Ragusa (Italy) |
| title_full_unstemmed | Extended Tromograph Surveys for a Full Experimental Characterisation of the San Giorgio Cathedral in Ragusa (Italy) |
| title_short | Extended Tromograph Surveys for a Full Experimental Characterisation of the San Giorgio Cathedral in Ragusa (Italy) |
| title_sort | extended tromograph surveys for a full experimental characterisation of the san giorgio cathedral in ragusa italy |
| topic | heritage HVSR seismic tomography MASW tromograph ambient vibration testing |
| url | https://www.mdpi.com/1424-8220/23/2/889 |
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