Spatially varying crustal stress along the Zagros seismic belt inferred from earthquake focal mechanisms

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F23%3A00567607" target="_blank" >RIV/67985831:_____/23:00567607 - isvavai.cz</a>
Alternative codes found
RIV/67985530:_____/23:00567878
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0040195122004474" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0040195122004474</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.tecto.2022.229653" target="_blank" >10.1016/j.tecto.2022.229653</a>

Result language
angličtina
Original language name
Spatially varying crustal stress along the Zagros seismic belt inferred from earthquake focal mechanisms
Original language description
We determine the stress field of the Zagros fold-and-thrust belt (ZFTB) in the collisional zone between the Arabian and Iranian plates. Using 898 mainshock focal mechanisms, which occurred along the belt between 1956 and 2021, we calculate stress at 32 locations. The results reveal that the crustal stress in the Zagros belt is heterogeneous with variations in the orientation of SHmax as well as in the stress ratio. The interpolation of the Simpson’s index Aϕ points to three distinct domains: northern, central and southern, which are characterized by wrench, compressional, and wrench-compressional to compressional tectonic regimes, respectively. Tectonic stress in the study area is characterized by a horizontal to sub-horizontal maximum compression axis in the ~NESW to ~NNW-SSE direction. The GPS measurements of the strain tensor and the SHmax direction inferred from the stress inversion indicate that both the deformation pattern and the seismicity along the ZFTB zone are primarily affected by convergence of the Arabian and Iranian plates.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20701 - Environmental and geological engineering, geotechnics

Project
<a href="/en/project/GA22-10747S" target="_blank" >GA22-10747S: Inversion of focal mechanisms and seismic moment tensors for stress and its spatiotemporal variation</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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