Tectonic stress field related to the eastern Türkiye from 1976 to 2024

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F25%3A00619748" target="_blank" >RIV/67985530:_____/25:00619748 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s10950-025-10282-3" target="_blank" >https://link.springer.com/article/10.1007/s10950-025-10282-3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10950-025-10282-3" target="_blank" >10.1007/s10950-025-10282-3</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Tectonic stress field related to the eastern Türkiye from 1976 to 2024

Popis výsledku v původním jazyce

In this study, we assess the state of the stress field in eastern Türkiye and discuss whether the stress field in the region has changed over time. To assess the governing stress field, we applied stress tensor inversion techniques using focal mechanisms from earthquake catalogs. The focal mechanisms were grouped into subregions based on spatial and temporal factors. We employed a damped regional-scale stress tensor inversion algorithm and an iterative joint inversion technique to determine the stress field for eastern Türkiye. Near the North Anatolian Fault Zone, the stress field exhibits strike-slip faulting with a slight counterclockwise rotation of the principal stress axes. From 1983 to 2016, reverse faulting was observed near Erzincan, transitioning to strike-slip faulting after 2017 due to changes in Smid and Smin axes. Near the East Anatolian Fault Zone, the stress field remains strike-slip, but after two major earthquakes in 2023, normal faulting emerged in areas with longitude less than 37 ◦E, likely due to stress perturbations. In the easternmost region near the Zagros Fold Belt, reverse faulting dominates the north and south, while strike-slip faulting characterizes the central part. High R-values suggest frequent interchange of Smid and Smin axes. The damped inversion method effectively smoothens stress axis transitions in data-sparse regions but introduces errors in isolated areas, where the iterative method proves more reliable. These findings illuminate eastern Türkiye’s evolving tectonic stress field.nn

Název v anglickém jazyce

Tectonic stress field related to the eastern Türkiye from 1976 to 2024

Popis výsledku anglicky

In this study, we assess the state of the stress field in eastern Türkiye and discuss whether the stress field in the region has changed over time. To assess the governing stress field, we applied stress tensor inversion techniques using focal mechanisms from earthquake catalogs. The focal mechanisms were grouped into subregions based on spatial and temporal factors. We employed a damped regional-scale stress tensor inversion algorithm and an iterative joint inversion technique to determine the stress field for eastern Türkiye. Near the North Anatolian Fault Zone, the stress field exhibits strike-slip faulting with a slight counterclockwise rotation of the principal stress axes. From 1983 to 2016, reverse faulting was observed near Erzincan, transitioning to strike-slip faulting after 2017 due to changes in Smid and Smin axes. Near the East Anatolian Fault Zone, the stress field remains strike-slip, but after two major earthquakes in 2023, normal faulting emerged in areas with longitude less than 37 ◦E, likely due to stress perturbations. In the easternmost region near the Zagros Fold Belt, reverse faulting dominates the north and south, while strike-slip faulting characterizes the central part. High R-values suggest frequent interchange of Smid and Smin axes. The damped inversion method effectively smoothens stress axis transitions in data-sparse regions but introduces errors in isolated areas, where the iterative method proves more reliable. These findings illuminate eastern Türkiye’s evolving tectonic stress field.nn

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

Journal of Seismology

ISSN

1383-4649

e-ISSN

1573-157X

Svazek periodika

29

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

20

Strana od-do

1073-1092

Kód UT WoS článku

001422992500001

EID výsledku v databázi Scopus

2-s2.0-85218179454