Modelling the seismic response of the Mýtina maar volcanic structure

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F23%3A00572069" target="_blank" >RIV/67985530:_____/23:00572069 - isvavai.cz</a>

Výsledek na webu

<a href="https://earth-planets-space.springeropen.com/articles/10.1186/s40623-023-01822-7" target="_blank" >https://earth-planets-space.springeropen.com/articles/10.1186/s40623-023-01822-7</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1186/s40623-023-01822-7" target="_blank" >10.1186/s40623-023-01822-7</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Modelling the seismic response of the Mýtina maar volcanic structure

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Modelling the seismic response of the Mýtina maar volcanic structure

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10507 - Volcanology

Projekt

<a href="/cs/project/GA20-15818S" target="_blank" >GA20-15818S: Určování trojdimenzionálních lokálních efetků ze seismického šumu</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Earth, Planets and Space

ISSN

1880-5981

e-ISSN

1880-5981

Svazek periodika

75

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

16

Strana od-do

80

Kód UT WoS článku

000988490800001

EID výsledku v databázi Scopus

2-s2.0-85159947591