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@article{68161, author = {Opršal, Ivo and Labuta, Martin and Burjánek, Jan}, article_location = {Berlin, Německo}, article_number = {1}, keywords = {3D numerical modelling; 3D resonance; Ambient vibrations; Array measurements; Dispersion curves; F–K analysis; Maar volcanic structure response; Site effects; Spectral analysis}, language = {eng}, issn = {1343-8832}, journal = {Earth, Planets and Space}, title = {Modelling the seismic response of the Mýtina maar volcanic structure}, url = {https://link.springer.com/content/pdf/10.1186/s40623-023-01822-7.pdf}, volume = {75}, year = {2023} }
TY - JOUR ID - 68161 AU - Opršal, Ivo - Labuta, Martin - Burjánek, Jan PY - 2023 TI - Modelling the seismic response of the Mýtina maar volcanic structure JF - Earth, Planets and Space VL - 75 IS - 1 SP - 1-13 EP - 1-13 PB - Springer Nature SN - 13438832 KW - 3D numerical modelling KW - 3D resonance KW - Ambient vibrations KW - Array measurements KW - Dispersion curves KW - F–K analysis KW - Maar volcanic structure response KW - Site effects KW - Spectral analysis UR - https://link.springer.com/content/pdf/10.1186/s40623-023-01822-7.pdf N2 - 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. ER -
OPRŠAL, Ivo, Martin LABUTA and Jan BURJÁNEK. Modelling the seismic response of the Mýtina maar volcanic structure. \textit{Earth, Planets and Space}. Berlin, Německo: Springer Nature, 2023, vol.~75, No~1, p.~1-13. ISSN~1343-8832.
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