Seismic moment tensor and focal mechanism for earthquake of February 22, 2024 in eastern Slovakia (12:54:15 UTC, 21.75E°E, 49.03°N, depth 9 km, ML3.0)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F25%3A00619350" target="_blank" >RIV/67985891:_____/25:00619350 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.24028/gj.v47i2.322470" target="_blank" >https://doi.org/10.24028/gj.v47i2.322470</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.24028/gj.v47i2.322470" target="_blank" >10.24028/gj.v47i2.322470</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Seismic moment tensor and focal mechanism for earthquake of February 22, 2024 in eastern Slovakia (12:54:15 UTC, 21.75E°E, 49.03°N, depth 9 km, ML3.0)

Popis výsledku v původním jazyce

The accuracy of the focal mechanism solution can depend very significantly on the number of stations used, especially in the case of weak earthquakes and sparse networks. We describe the procedure for retrieving the seismic moment tensor for the earthquake of February 22, 2024, which happened in Eastern Slovakia, using a limited number of seismic stations. We use records from only two stations of the Slovakian network: sk19 (49.25 degrees N, 21.93 degrees E) and sk20 (49.21 degrees N, 21.61 degrees E). The moment tensor inversion of high-frequency seismogram data in this study is based on a point source approach using the matrix method for the direct waves. The process involves generating records in displacements using the frequency and wave-number integration technique for an elastic horizontally layered medium. Amethod is presented for moment tensor inversion of only direct P-and S-waves, which is less sensitive to path effects modelling than reflected and converted waves, significantly improving the method's accuracy and reliability. The location and origin time of the event are considered known. Based on forward modelling, a numerical technique is developed for the inversion of observed waveforms for the of moment tensor M(t) components obtained by generalized inversion.

Název v anglickém jazyce

Seismic moment tensor and focal mechanism for earthquake of February 22, 2024 in eastern Slovakia (12:54:15 UTC, 21.75E°E, 49.03°N, depth 9 km, ML3.0)

Popis výsledku anglicky

The accuracy of the focal mechanism solution can depend very significantly on the number of stations used, especially in the case of weak earthquakes and sparse networks. We describe the procedure for retrieving the seismic moment tensor for the earthquake of February 22, 2024, which happened in Eastern Slovakia, using a limited number of seismic stations. We use records from only two stations of the Slovakian network: sk19 (49.25 degrees N, 21.93 degrees E) and sk20 (49.21 degrees N, 21.61 degrees E). The moment tensor inversion of high-frequency seismogram data in this study is based on a point source approach using the matrix method for the direct waves. The process involves generating records in displacements using the frequency and wave-number integration technique for an elastic horizontally layered medium. Amethod is presented for moment tensor inversion of only direct P-and S-waves, which is less sensitive to path effects modelling than reflected and converted waves, significantly improving the method's accuracy and reliability. The location and origin time of the event are considered known. Based on forward modelling, a numerical technique is developed for the inversion of observed waveforms for the of moment tensor M(t) components obtained by generalized inversion.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Geofizičeskij žurnal

ISSN

0203-3100

e-ISSN

2524-1052

Svazek periodika

47

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

UA - Ukrajina

Počet stran výsledku

6

Strana od-do

110-115

Kód UT WoS článku

001469781800015

EID výsledku v databázi Scopus

2-s2.0-105002991742