Coulomb stress change before and after 24.01.2020 Sivrice (Elazığ) Earthquake (Mw = 6.8) on the East Anatolian Fault Zone

Alkan, Hamdi; Büyüksaraç, Aydın; Bektaș, Özcan; Işık, Ercan

doi:10.1007/s12517-021-09080-1

Cited by 30 publications

(13 citation statements)

References 33 publications

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“…The region has one of the longest active faults in Turkey. The 1939 Erzincan earthquake, the largest recorded earthquake in Turkey, also occurred in this region (Alkan et al 2021). These similar seismicity data highlight the seismic risk of the region.…”

Section: Seismicity Of the Study Regionmentioning

confidence: 94%

Earthquake Risk Assessment Using GIS-Based Analytical Hierarchy Process (AHP): The Case of Bitlis Province (Türkiye)

Aydın,

Sevgi Birincioğlu,

Büyüksaraç

et al. 2024

International Journal of Environment and Geoinformatics

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The risk level of natural disasters such as earthquakes depends on many factors. Some of these are direct hazards, while others are vulnerability factors that increase the risk. In this regard, risk assessment should be performed by evaluating the hazard and vulnerability factors together. The Analytical Hierarchy Process (AHP) is a powerful tool for co-evaluating such multiple decision criteria. The spatial visualization of the results facilitates the direct assessment of risks as well. In the present study, the seismic risk assessment of the Bitlis province in Eastern Anatolia, which has a high seismic risk, was performed by using the GIS-based AHP method. Among many criteria, six effective criteria on earthquake risk such as seismicity, demographic and topographic criteria were taken into consideration based on expert decision makers. It is concluded that the results obtained from the study were quite successful in terms of determining the seismic risks of the study area. Accordingly, while the risks are high in densely populated settlements with high peak ground acceleration (PGA), the risk decreases according to soil and land use.

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Section: Seismicity Of the Study Regionmentioning

confidence: 94%

Earthquake Risk Assessment Using GIS-Based Analytical Hierarchy Process (AHP): The Case of Bitlis Province (Türkiye)

Aydın,

Sevgi Birincioğlu,

Büyüksaraç

et al. 2024

International Journal of Environment and Geoinformatics

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“…Specifically, there is a significant CFS increase zone with a maximum of 3.0 bar in the Puturge segment of the EAF, indicating an elevated risk of future rupture. It is noteworthy that the 2020 Mw 6.8 Sivrice earthquake has partially released the accumulated stress in this segment [43]. Therefore, the possibility of an imminent seismic rupture or earthquake is relatively minimal.…”

Section: Effects Of the 2023 Turkey-syria Earthquake On Nearby Faultsmentioning

confidence: 97%

Coseismic Faulting Model and Post-Seismic Surface Motion of the 2023 Turkey–Syria Earthquake Doublet Revealed by InSAR and GPS Measurements

et al. 2023

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On 6 February 2023 (UTC), an earthquake doublet, consisting of the Mw 7.8 Pazarcik earthquake and the Mw 7.5 Elbistan earthquake, struck south-central Turkey and northwestern Syria, which was the largest earthquake that occurred in Turkey since the 1939 Erzincan earthquake. The faulting model of this earthquake was estimated based on the coseismic InSAR and GPS displacements. In addition, the best-fitting coseismic faulting model indicates that both the Pazarcik earthquake and the Elbistan earthquake were controlled by predominated left-lateral strike-slip motion, with slip peaks of 9.7 m and 10.8 m, respectively. The Coulomb failure stress (CFS) change suggests that the Pazarcik earthquake has a positive effect in triggering the rupture of the seismogenic fault of the Elbistan earthquake. Furthermore, these two main shocks promoted the occurrence of the Mw 6.3 strong aftershock. Additionally, it is found that the 2023 Turkey-Syria earthquake doublet increased the rupture risk of the Puturge segment of the EAF fault and the northern segment of the Dead Sea Fault (DSF). It is crucial to note that the northern segment of the DSF has not experienced a large earthquake in several centuries, highlighting the need for heightened attention to the potential seismic hazard of this segment. Finally, a deformation zone adjacent to the DSF was identified, potentially attributed to the motion of a blind submarine fault.

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“…The East Anatolian Fault Zone (EAFZ), with a length of approximately 580 km, is located between Bingöl Karlıova and Hatay. Many major earthquakes have occurred throughout history in this fault zone, which is one of the most active fault zones in Türkiye [26][27][28][29][30][31]. Some historical earthquakes such as the 1822 Antakya earthquake, 1866 Karlıova earthquake, 1872 Amik earthquake, 1874 and 1875 Hazar Lake earthquakes, and 1893 Malatya earthquake have occurred over a magnitude of 7.…”

Section: Kahramanmaraş Earthquakesmentioning

confidence: 99%

Investigation of Precast Reinforced Concrete Structures during the 6 February 2023 Türkiye Earthquakes

Avcil

2023

Sustainability

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On 6 February 2023, two major earthquakes, MW7.7 and MW7.6, occurred in the Kahramanmaraş city region of southeast Türkiye. As a result of the earthquakes that affected the region, around 60,000 people died and thousands of buildings suffered various levels of damage. In this study, the collapse and failure mechanisms of precast reinforced concrete structures, most of which are industrial buildings, and the damages occurred in these structures, were investgated through on-site observations. As a result of the investigations carried out in the field immediately after the earthquake, it was understood that most of the damage was caused by the connection system of the precast structures. The most common damage is the separation of the roof beam from the column due to the weak column–beam connection system. At the end of the paper, studies to strengthen and improve suggestions for this poor behavior will be mentioned. Also, by analyzing a sample structure, the performance levels were determined by comparing it with the damage limit values in TBEC-2018.

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Coulomb stress change before and after 24.01.2020 Sivrice (Elazığ) Earthquake (Mw = 6.8) on the East Anatolian Fault Zone

Cited by 30 publications

References 33 publications

Earthquake Risk Assessment Using GIS-Based Analytical Hierarchy Process (AHP): The Case of Bitlis Province (Türkiye)

Earthquake Risk Assessment Using GIS-Based Analytical Hierarchy Process (AHP): The Case of Bitlis Province (Türkiye)

Coseismic Faulting Model and Post-Seismic Surface Motion of the 2023 Turkey–Syria Earthquake Doublet Revealed by InSAR and GPS Measurements

Investigation of Precast Reinforced Concrete Structures during the 6 February 2023 Türkiye Earthquakes

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