Non-double-couple moment tensors of earthquakes calculated using empirical Green’s functions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F20%3A00509009" target="_blank" >RIV/67985530:_____/20:00509009 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.geoscienceworld.org/ssa/srl/article/91/1/390/575204/Non-Double-Couple-Moment-Tensors-of-Earthquakes" target="_blank" >https://pubs.geoscienceworld.org/ssa/srl/article/91/1/390/575204/Non-Double-Couple-Moment-Tensors-of-Earthquakes</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1785/0220190154" target="_blank" >10.1785/0220190154</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Non-double-couple moment tensors of earthquakes calculated using empirical Green’s functions

Popis výsledku v původním jazyce

We present a joint inversion for empirical Green's functions (EGFs) and high-resolution non-double-couple (non-DC) moment tensors. First, the EGFs are constructed using known moment tensors of earthquakes occurring in a small focal zone. Second, the estimated EGFs are applied to refine the original moment tensors used for constructing the EGFs. Because the EGFs describe the velocity model better than the standard GFs, the refined moment tensors are more accurate. The method is applied to real observations of earthquakes of the 2008 swarm in West Bohemia, Czech Republic, where tiny details in fracturing in the focal zone are revealed. Refined moment tensors indicate fault closing caused by compaction of fault gouge during fracturing process related to fault weakening by fluids in the focal zone. The application of the proposed inversion can improve moment tensors reported in existing local, regional, or global catalogs for areas with a concentrated seismicity.

Název v anglickém jazyce

Non-double-couple moment tensors of earthquakes calculated using empirical Green’s functions

Popis výsledku anglicky

We present a joint inversion for empirical Green's functions (EGFs) and high-resolution non-double-couple (non-DC) moment tensors. First, the EGFs are constructed using known moment tensors of earthquakes occurring in a small focal zone. Second, the estimated EGFs are applied to refine the original moment tensors used for constructing the EGFs. Because the EGFs describe the velocity model better than the standard GFs, the refined moment tensors are more accurate. The method is applied to real observations of earthquakes of the 2008 swarm in West Bohemia, Czech Republic, where tiny details in fracturing in the focal zone are revealed. Refined moment tensors indicate fault closing caused by compaction of fault gouge during fracturing process related to fault weakening by fluids in the focal zone. The application of the proposed inversion can improve moment tensors reported in existing local, regional, or global catalogs for areas with a concentrated seismicity.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10507 - Volcanology

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Seismological Research Letters

ISSN

0895-0695

e-ISSN

—

Svazek periodika

91

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

390-398

Kód UT WoS článku

000504758600030

EID výsledku v databázi Scopus

2-s2.0-85077127325