Articles | Volume 10, issue 3
https://doi.org/10.5194/se-10-713-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-10-713-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
23 May 2019
Research article |
| 23 May 2019
| 23 May 2019
Moment magnitude estimates for central Anatolian earthquakes using coda waves
Tuna Eken
CORRESPONDING AUTHOR
Department of Geophysical Engineering, the Faculty of Mines, Istanbul
Technical University, 34469 Maslak, Sarıyer, Istanbul, Turkey
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Gizem Izgi, Tuna Eken, Peter Gaebler, Tülay Eken-Kaya, and Tuncay Taymaz
EGUsphere, https://doi.org/10.5194/egusphere-2023-2577, https://doi.org/10.5194/egusphere-2023-2577, 2024
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In this manuscript, we investigate the complexity of the upper crustal block of Central Anatolia Region, Türkiye. We present the results of seismic attenuation by examining 1509 local earthquakes recorded at 72 broadband stations deployed within the framework of a passive seismic experiment. We emphasize the detailed 2D maps of intrinsic and scattering attenuation within the area where two devastating earthquakes (M7.8 and M7.5 Kahramanmaraş Earthquake Sequence) happened in 2023.
Ashwani Kant Tiwari, Arun Singh, Tuna Eken, and Chandrani Singh
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New splitting measurements are obtained using direct-S waves by correcting source-side contamination using data from southeastern Tibet, near Namcha Barwa. A highly deformed lithospheric and sub-lithospheric mantle reveals fast-axis patterns close to the surficial expressions of the local geology. Significant anisotropy observed at stations where null or no measurements were obtained in earlier studies indicates the importance of using direct-S waves for anisotropic measurements.
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We observed with seismic data in the entire region of Turkey and surroundings the lithosphere–asthenosphere boundary (LAB). It is located generally between 80 and 100km depth outside the subduction zone. No change of the LAB depth was observed across the North and East Anatolian faults. The LAB of the subducting African plate is observed down to about 150km depth from the Aegean to the east of Cyprus, with a tear at Cyprus.
Gizem Izgi, Tuna Eken, Peter Gaebler, Tülay Eken-Kaya, and Tuncay Taymaz
EGUsphere, https://doi.org/10.5194/egusphere-2023-2577, https://doi.org/10.5194/egusphere-2023-2577, 2024
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In this manuscript, we investigate the complexity of the upper crustal block of Central Anatolia Region, Türkiye. We present the results of seismic attenuation by examining 1509 local earthquakes recorded at 72 broadband stations deployed within the framework of a passive seismic experiment. We emphasize the detailed 2D maps of intrinsic and scattering attenuation within the area where two devastating earthquakes (M7.8 and M7.5 Kahramanmaraş Earthquake Sequence) happened in 2023.
Ashwani Kant Tiwari, Arun Singh, Tuna Eken, and Chandrani Singh
Solid Earth, 8, 435–452, https://doi.org/10.5194/se-8-435-2017, https://doi.org/10.5194/se-8-435-2017, 2017
Short summary
Short summary
New splitting measurements are obtained using direct-S waves by correcting source-side contamination using data from southeastern Tibet, near Namcha Barwa. A highly deformed lithospheric and sub-lithospheric mantle reveals fast-axis patterns close to the surficial expressions of the local geology. Significant anisotropy observed at stations where null or no measurements were obtained in earlier studies indicates the importance of using direct-S waves for anisotropic measurements.
R. Kind, T. Eken, F. Tilmann, F. Sodoudi, T. Taymaz, F. Bulut, X. Yuan, B. Can, and F. Schneider
Solid Earth, 6, 971–984, https://doi.org/10.5194/se-6-971-2015, https://doi.org/10.5194/se-6-971-2015, 2015
Short summary
Short summary
We observed with seismic data in the entire region of Turkey and surroundings the lithosphere–asthenosphere boundary (LAB). It is located generally between 80 and 100km depth outside the subduction zone. No change of the LAB depth was observed across the North and East Anatolian faults. The LAB of the subducting African plate is observed down to about 150km depth from the Aegean to the east of Cyprus, with a tear at Cyprus.
Related subject area
Subject area: Tectonic plate interactions, magma genesis, and lithosphere deformation at all scales | Editorial team: Seismics, seismology, paleoseismology, geoelectrics, and electromagnetics | Discipline: Seismology
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Short summary
Proper magnitude estimates for earthquakes can give insight into the seismic energy released at an earthquake source. This is, in fact, essential for better seismic hazard assessments in tectonically active regions. In the present work, I examine local earthquakes in central Anatolia to estimate their moment magnitudes. The main outcome of this study is an empirical relation that can provide a direct physical quantity of seismic energy in the study region.
Proper magnitude estimates for earthquakes can give insight into the seismic energy released at...
