February 6, 2023 Mw 7.7 Pazarcık earthquake: characteristic features of the surface rupture along the Çakmak Fault (Adıyaman-Gölbaşı-Akçabel)

Elif Akgün; Mustafa Softa

Article Details

February 6, 2023 Mw 7.7 Pazarcık earthquake: characteristic features of the surface rupture along the Çakmak Fault (Adıyaman-Gölbaşı-Akçabel)

Authors:

Elif Akgün | Mustafa Softa

Publisher:

Gumushane University

Main Topics:

Yapısal Jeoloji ve Tektonik

Journal:

Gümüşhane Üniversitesi Fen Bilimleri Dergisi Vol.15 Issue 3, pp.653-666

Document Type:

Article

Publication Date:

9/2025

Document Language:

Turkish

Document ID (Org No.):

2001358137

pISSN:

2146-538X

Keywords:

Abstract:

 This study examines in detail the surface rupture observed between the Gölbaşı district of Adıyaman province and Akçabel town, which resulted from the February 6, 2023, KahramanmaraşPazarcık Mw: 7.7 earthquake along the East Anatolian Fault System. The deformation along the surface rupture, identified through 1:25,000 scale mapping and field studies, was measured in terms of left-lateral displacement and vertical slip values. These measurements were interpreted in conjunction with a stress state analysis based on instrumental earthquake data. The studies conducted on the surface rupture revealed the following findings: i the surface rupture, mapped over approximately 15 km between the Gölbaşı district of Adıyaman province and Akçabel town, aligns with the Çakmak fault defined in this study; ii the largest left-lateral displacement and vertical slip values observed along the surface rupture were 425 cm and 102 cm, respectively, near Çakmak town; and iii stress analysis indicated that the fault underwent deformation due to the influence of a WNW-ENE extensional force and NNE-SSW compression, consistent with a transtensional tectonic regime.

 This study examines in detail the surface rupture observed between the Gölbaşı district of Adıyaman province and Akçabel town, which resulted from the February 6, 2023, KahramanmaraşPazarcık Mw: 7.7 earthquake along the East Anatolian Fault System. The deformation along the surface rupture, identified through 1:25,000 scale mapping and field studies, was measured in terms of left-lateral displacement and vertical slip values. These measurements were interpreted in conjunction with a stress state analysis based on instrumental earthquake data. The studies conducted on the surface rupture revealed the following findings: i the surface rupture, mapped over approximately 15 km between the Gölbaşı district of Adıyaman province and Akçabel town, aligns with the Çakmak fault defined in this study; ii the largest left-lateral displacement and vertical slip values observed along the surface rupture were 425 cm and 102 cm, respectively, near Çakmak town; and iii stress analysis indicated that the fault underwent deformation due to the influence of a WNW-ENE extensional force and NNE-SSW compression, consistent with a transtensional tectonic regime.

 This study examines in detail the surface rupture observed between the Gölbaşı district of Adıyaman province and Akçabel town, which resulted from the February 6, 2023, KahramanmaraşPazarcık Mw: 7.7 earthquake along the East Anatolian Fault System. The deformation along the surface rupture, identified through 1:25,000 scale mapping and field studies, was measured in terms of left-lateral displacement and vertical slip values. These measurements were interpreted in conjunction with a stress state analysis based on instrumental earthquake data. The studies conducted on the surface rupture revealed the following findings: i the surface rupture, mapped over approximately 15 km between the Gölbaşı district of Adıyaman province and Akçabel town, aligns with the Çakmak fault defined in this study; ii the largest left-lateral displacement and vertical slip values observed along the surface rupture were 425 cm and 102 cm, respectively, near Çakmak town; and iii stress analysis indicated that the fault underwent deformation due to the influence of a WNW-ENE extensional force and NNE-SSW compression, consistent with a transtensional tectonic regime.

 Bu çalışmada, Doğu Anadolu Fay Sistemi üzerinde gerçekleşen 6 Şubat 2023 KahramanmaraşPazarcık Mw: 7.7 depremine bağlı olarak Adıyaman ili Gölbaşı ilçesi ile Akçabel beldesi arasında net bir şekilde izlenen yüzey kırığı detaylı şekilde incelenmiştir. 125.000 ölçekli haritalama ve arazi çalışmalarıyla tespit edilen yüzey kırığı boyunca gelişen deformasyon sol yanal yer değiştirme miktarları ve düşey atım değerleri ile ölçülerek, fayın aletsel dönem deprem verilerine dayalı gerilme durumu analizi ile birlikte yorumlanmıştır. Yüzey kırığı üzerinde gerçekleştirilen çalışmalarda, i Adıyaman ili Gölbaşı ilçesi ile Akçabel beldesi arasında 15 km haritalanan yüzey kırığının bu çalışmada tanımlanan Çakmak fayını izlediği, ii yüzey kırığının üzerinde gözlenen en büyük sol yanal yer değiştirmenin ve düşey atım değerlerinin Çakmak beldesi yakınlarında sırasıyla 425 cm ve 102 cm olarak ölçüldüğü, iii stres analizleri sonucunda fayın BKB-DKD yönlü gerilme kuvveti ve KKD-GGB yönlü sıkışma etkisi altında transtansiyonel tektonik rejim etkisinde deforme olduğu saptanmıştır.

Article Details

February 6, 2023 Mw 7.7 Pazarcık earthquake: characteristic features of the surface rupture along the Çakmak Fault (Adıyaman-Gölbaşı-Akçabel)

Authors:

Elif Akgün | Mustafa Softa

Publisher:

Gumushane University

Main Topics:

Yapısal Jeoloji ve Tektonik

Journal:

Gümüşhane Üniversitesi Fen Bilimleri Dergisi Vol.15 Issue 3, pp.653-666

Document Type:

Article

Publication Date:

9/2025

Document Language:

Turkish

Document ID (Org No.):

2001358137

pISSN:

2146-538X

East Anatolian Fault System

Çakmak fault

Pazarcık earthquake

Surface ruptureDoğu Anadolu Fay Sistemi

Çakmak fayı

Pazarcık depremi

Yüzey kırığı

Issues

Article Details

Authors: Elif Akgün | Mustafa Softa

Publisher: Gumushane University

Main Topics: Yapısal Jeoloji ve Tektonik

Journal: Gümüşhane Üniversitesi Fen Bilimleri Dergisi Vol.15 Issue 3, pp.653-666

Document Type: Article

Publication Date: 9/2025

Document Language: Turkish

Document ID (Org No.): 2001358137

pISSN: 2146-538X

Issues

Authors:

Elif Akgün | Mustafa Softa

Publisher:

Gumushane University

Main Topics:

Yapısal Jeoloji ve Tektonik

Journal:

Gümüşhane Üniversitesi Fen Bilimleri Dergisi Vol.15 Issue 3, pp.653-666

Document Type:

Article

Publication Date:

9/2025

Document Language:

Turkish

Document ID (Org No.):

2001358137

pISSN:

2146-538X