Moment and moment magnitude of seismic events located by stacking

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F14%3A00438579" target="_blank" >RIV/67985891:_____/14:00438579 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1190/GEO2014-0179.1" target="_blank" >http://dx.doi.org/10.1190/GEO2014-0179.1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1190/GEO2014-0179.1" target="_blank" >10.1190/GEO2014-0179.1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Moment and moment magnitude of seismic events located by stacking

Popis výsledku v původním jazyce

Determination of moment and moment magnitude for seismic events located by stacking has been an unsolved problem because current methodologies cannot be applied. To solve this problem, we have developed a methodology for moment magnitude M-w estimation of (micro) seismic events. Our method was designed for stacking waveforms. We found that magnitude can be determined from the stack of amplitudes corrected for radiation pattern and propagation effects such as geometric spreading, attenuation, and free-surface boundary. From the stack of corrected waveforms, we found the low-frequency limit corresponding to the stack of particle displacement and calculated seismic moment. We found that an unstacked method of estimating moment magnitude on each trace andaveraging these estimates was consistent with the method we developed although it was limited to higher magnitude events and more sensitive to noise. We benchmarked our methodology with a case study and found improvement in M-w estimation

Název v anglickém jazyce

Moment and moment magnitude of seismic events located by stacking

Popis výsledku anglicky

Determination of moment and moment magnitude for seismic events located by stacking has been an unsolved problem because current methodologies cannot be applied. To solve this problem, we have developed a methodology for moment magnitude M-w estimation of (micro) seismic events. Our method was designed for stacking waveforms. We found that magnitude can be determined from the stack of amplitudes corrected for radiation pattern and propagation effects such as geometric spreading, attenuation, and free-surface boundary. From the stack of corrected waveforms, we found the low-frequency limit corresponding to the stack of particle displacement and calculated seismic moment. We found that an unstacked method of estimating moment magnitude on each trace andaveraging these estimates was consistent with the method we developed although it was limited to higher magnitude events and more sensitive to noise. We benchmarked our methodology with a case study and found improvement in M-w estimation

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DC - Seismologie, vulkanologie a struktura Země

OECD FORD obor

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Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Geophysics

ISSN

0016-8033

e-ISSN

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Svazek periodika

79

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

"A57"-"A61"

Kód UT WoS článku

000345908500003

EID výsledku v databázi Scopus

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