Modelling the seismic response of the Mýtina maar volcanic structure
Abstract In this study, we determine the properties of the maar volcanic structure using ambient vibration analysis. We performed several ambient vibrations surveys at Mýtina maar (West-Bohemia, Czechia) to map amplification by site-to-reference spectral ratios and to estimate average shear wave vel...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-05-01
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| Series: | Earth, Planets and Space |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s40623-023-01822-7 |
| _version_ | 1827948283035648000 |
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| author | Martin Labuta Ivo Oprsal Jan Burjánek |
| author_facet | Martin Labuta Ivo Oprsal Jan Burjánek |
| author_sort | Martin Labuta |
| collection | DOAJ |
| description | Abstract In this study, we determine the properties of the maar volcanic structure using ambient vibration analysis. We performed several ambient vibrations surveys at Mýtina maar (West-Bohemia, Czechia) to map amplification by site-to-reference spectral ratios and to estimate average shear wave velocities by array methods. As the maar diatreme is formed by a deep concave body of broken rock, strong 3D resonances develop. The site-to-reference amplification factors reach a value of 20 in the central part of the maar. Using the noise data, we demonstrate possibility of mapping the lateral dimensions of the maar infills by ambient noise measurements. To understand these observations, we developed a simplified 3D viscoelastic velocity model and simulated synthetic ambient vibrations by the finite difference method. The simulated response fitted both, measured fundamental frequencies and the amplification levels. The maximum depth of the crater was estimated to be at least 800 m. Graphical Abstract |
| first_indexed | 2024-04-09T12:51:51Z |
| format | Article |
| id | doaj.art-9c155f1da3ea4c6391be9a6634271c2c |
| institution | Directory Open Access Journal |
| issn | 1880-5981 |
| language | English |
| last_indexed | 2024-04-09T12:51:51Z |
| publishDate | 2023-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Earth, Planets and Space |
| spelling | doaj.art-9c155f1da3ea4c6391be9a6634271c2c2023-05-14T11:11:01ZengSpringerOpenEarth, Planets and Space1880-59812023-05-0175111310.1186/s40623-023-01822-7Modelling the seismic response of the Mýtina maar volcanic structureMartin Labuta0Ivo Oprsal1Jan Burjánek2Institute of Geophysics of the Czech Academy of ScienceInstitute of Geophysics of the Czech Academy of ScienceInstitute of Geophysics of the Czech Academy of ScienceAbstract In this study, we determine the properties of the maar volcanic structure using ambient vibration analysis. We performed several ambient vibrations surveys at Mýtina maar (West-Bohemia, Czechia) to map amplification by site-to-reference spectral ratios and to estimate average shear wave velocities by array methods. As the maar diatreme is formed by a deep concave body of broken rock, strong 3D resonances develop. The site-to-reference amplification factors reach a value of 20 in the central part of the maar. Using the noise data, we demonstrate possibility of mapping the lateral dimensions of the maar infills by ambient noise measurements. To understand these observations, we developed a simplified 3D viscoelastic velocity model and simulated synthetic ambient vibrations by the finite difference method. The simulated response fitted both, measured fundamental frequencies and the amplification levels. The maximum depth of the crater was estimated to be at least 800 m. Graphical Abstracthttps://doi.org/10.1186/s40623-023-01822-7Ambient vibrationsSite effects3D resonanceSpectral analysis3D numerical modellingMaar volcanic structure response |
| spellingShingle | Martin Labuta Ivo Oprsal Jan Burjánek Modelling the seismic response of the Mýtina maar volcanic structure Earth, Planets and Space Ambient vibrations Site effects 3D resonance Spectral analysis 3D numerical modelling Maar volcanic structure response |
| title | Modelling the seismic response of the Mýtina maar volcanic structure |
| title_full | Modelling the seismic response of the Mýtina maar volcanic structure |
| title_fullStr | Modelling the seismic response of the Mýtina maar volcanic structure |
| title_full_unstemmed | Modelling the seismic response of the Mýtina maar volcanic structure |
| title_short | Modelling the seismic response of the Mýtina maar volcanic structure |
| title_sort | modelling the seismic response of the mytina maar volcanic structure |
| topic | Ambient vibrations Site effects 3D resonance Spectral analysis 3D numerical modelling Maar volcanic structure response |
| url | https://doi.org/10.1186/s40623-023-01822-7 |
| work_keys_str_mv | AT martinlabuta modellingtheseismicresponseofthemytinamaarvolcanicstructure AT ivooprsal modellingtheseismicresponseofthemytinamaarvolcanicstructure AT janburjanek modellingtheseismicresponseofthemytinamaarvolcanicstructure |