Fault modeling around southern Anatolia using the aftershock sequence of the Kahramanmaraş earthquakes (Mw = 7.7 and Mw = 7.6) and an interpretation of potential field data

Büyüksaraç, Aydın; Bektaş, Özcan; Alkan, Hamdi

doi:10.1007/s11600-023-01192-4

Cited by 5 publications

(2 citation statements)

References 35 publications

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“…Later, a new main shock with a magnitude of Mw = 7.6 hit on the same day, a fourth shock with a magnitude of ML = 5.7, a fifth shock with a magnitude of Mw = 6.0, and a sixth main shock with a magnitude of Mw = 6.4 on February 20, 2023 (Figure 1). The earthquake, centered in Pazarcık, ruptured for 350 km, and the second earthquake ruptured along approximately 160 km of the Sürgü fault [53]. The earthquake affected millions of people in 11 different provinces.…”

Section: February 2023 Kahramanmaraş Disastersmentioning

confidence: 99%

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Seismic Damages in Masonry Structural Walls and Solution Suggestions

ARKAN,

IŞIK,

AVCIL

et al. 2023

Academic Platform Journal of Natural Hazards and Disaster Management

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Masonry structures are known as an ancient construction technology with a history dating back thousands of years. The main load-bearing members of masonry structures are walls obtained using different materials. These walls, which serve both load-bearing functions and are used to separate spaces, can be thick because they generally have low-strength properties. Masonry structures, which are commonly found in rural areas, are sensitive to earthquake effects and can receive damage at different levels. These masonry buildings, which were generally constructed without any engineering services, were exposed to significant damage under the influence of the Kahramanmaraş earthquake couple that occurred on February 6, 2023. This study examined the damage to the load-bearing walls of masonry buildings in the regions affected by this earthquake couple with the framework of cause-effect relationships and offered solutions. Poor masonry workmanship, insufficient use of horizontal/vertical bond beams, use of different wall materials together, heavy earthen roof effect, insufficient corner joints, amount of gaps, and use of low strength mortar have been determined as the main reasons for the damage occurring in masonry load-bearing walls. Performing earthquake-resistant building design principles is critical to minimizing such damage.

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Section: February 2023 Kahramanmaraş Disastersmentioning

confidence: 99%

“…Academic Platform Journal of Natural Hazards and Disaster Management 4(2),[49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64] 2023 …”

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confidence: 99%

Seismic Damages in Masonry Structural Walls and Solution Suggestions

ARKAN,

IŞIK,

AVCIL

et al. 2023

Academic Platform Journal of Natural Hazards and Disaster Management

Self Cite

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Geotechnical aspects and site investigations on Kahramanmaras earthquakes, February 06, 2023

Öser,

Sarğin,

Yildirim

et al. 2024

Nat Hazards

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Statistical and source characterization of the 2023 Kahramanmaraş Türkiye earthquake sequence

Rodríguez-Pérez,

Zúñiga

2024

Acta Geophys.

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We studied seismic features of the 2023 Kahramanmaraş Türkiye earthquake sequence by analyzing the spatiotemporal behavior of the b- and -p values and source characteristics of the mainshocks. We complemented our study by determining the regional stress field. The b-values in the region varied from 0.45 to 1.15. We observed a slight b-value decrease (Δb≈0.2) months before the two mainshocks. Our results exhibited complex b-value patterns on the fault planes and regular aftershock productivity rates (1.14 < p < 1.25). We compare static stress drop estimates derived from effective fault dimensions to those of finite-fault dimensions. Total effective stress drops (the sum of the stress drops of all fault segments) for the earthquake doublet were almost identical (~ 2.05 MPa), while those from finite-fault dimensions are somewhat lower (0.35 and 0.96 MPa). Based on a complete stress drop case, effective seismic efficiency was 0.65 and 0.43 for both mainshocks. The amount of partial stress drop was used to discriminate between different stress drop models. No clear model is discerned for the first mainshock, but a partial or even complete stress drop, assuming finite-fault dimensions, is supported by our measurements. Stress drop estimations derived from spectral analysis (25.46 and 34.39 MPa) agreed with global studies but larger than finite and effective fault estimates. Stress inversion results indicated that in the fault segments where the mainshocks occurred, the orientation of principal axes was consistent with a strike-slip regime. Conversely, the normal-faulting regime dominates adjacent areas of the main fault system.

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Fault modeling around southern Anatolia using the aftershock sequence of the Kahramanmaraş earthquakes (Mw = 7.7 and Mw = 7.6) and an interpretation of potential field data

Cited by 5 publications

References 35 publications

Seismic Damages in Masonry Structural Walls and Solution Suggestions

Seismic Damages in Masonry Structural Walls and Solution Suggestions

Geotechnical aspects and site investigations on Kahramanmaras earthquakes, February 06, 2023

Statistical and source characterization of the 2023 Kahramanmaraş Türkiye earthquake sequence

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