Stress inversion of regional seismicity in the Sea of Marmara region, Turkey

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F19%3A00494881" target="_blank" >RIV/67985530:_____/19:00494881 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007%2Fs00024-018-1971-1" target="_blank" >https://link.springer.com/article/10.1007%2Fs00024-018-1971-1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00024-018-1971-1" target="_blank" >10.1007/s00024-018-1971-1</a>

Result language

angličtina

Original language name

Stress inversion of regional seismicity in the Sea of Marmara region, Turkey

Original language description

In this study we derive the stress tensor and its local variations throughout the Marmara region, Turkey. Based on a recently compiled 10-year earthquake catalogue, we directly invert first-motion polarity data and quantify confidence intervals for the principal stress orientations. We find a combined strike-slip and normal faulting stress field for the Marmara region generally reflecting the overall transtensional setting. However, the results clearly show moderate local variations of the stress field. The largest (sigma 1) and intermediate (sigma 2) principal stresses show an average regional trend of N125 degrees E and locally varying plunges. The least principal stress (sigma 3) is well resolved in its confidence interval and consistent throughout the region with an average trend of approximate to N35 degrees E and a subhorizontal plunge. The eastern Sea of Marmara shows local stress field orientations with pronounced strike-slip (northern part) and normal faulting (southern part) components. Along the central Marmara region, normal faulting tends to dominate, while a well resolved strike-slip stress regime is found in the western Sea of Marmara region. Regarding the faulting mechanism of an earthquake with magnitude up to 7.4 which is expected in this area in direct vicinity of the Istanbul metropolitan region, our results imply that neither strike-slip nor normal faulting kinematics can be excluded.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10507 - Volcanology

Project

<a href="/en/project/GC16-19751J" target="_blank" >GC16-19751J: Seismic anisotropy and attenuation retrieved from acoustic emissions and observations of natural and induced seismicity</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

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

Name of the periodical

Pure and Applied Geophysics

ISSN

0033-4553

e-ISSN

—

Volume of the periodical

176

Issue of the periodical within the volume

3

Country of publishing house

CH - SWITZERLAND

Number of pages

23

Pages from-to

1269-1291

UT code for WoS article

000462507200016

EID of the result in the Scopus database

2-s2.0-85060534269