Modelling the seismic response of the Mýtina maar volcanic structure

@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.