Numerical Modeling of the 1939 Erzincan Earthquake

Date

2019-06-26

Author

Karim Zadeh Naghshineh, Shaghayegh
Askan Gündoğan, Ayşegül

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Erzincan İli, Kuzey Anadolu Fay Hattı, Kuzey Doğu Anadolu Fay Hattı ve Ovacık Fayları arasında derin bir basen yapısı içerisinde yer almakta olup, dünyanın sismik aktivite açısından en yoğun bölgelerinden birisidir. Bölgenin sismotektonik ve jeolojik koşulları, 1939 (Ms~7.8) ve 1992 (Mw= 6.6) depremleri dahil olmak üzere bir çok tarihi ve aletsel dönem depremlerine sebep olmuştur. 1939 Erzincan depremi çok yıkıcı bir deprem olmakla birlikte, aletsel dönemden önceye denk geldiği için bu depreme ait kayıt bulunmamaktadır. Diğer yandan, 1992 Erzincan depremi ise seyrek bir ağda kaydedilmiş olsa da, çeşitli açılardan detaylı olarak araştırılmıştır. Bu çalışmanın temel amacı Erzincan bölgesine ait sismik ve jeolojik parametreler kullanarak 1939 depreminin yer hareketi simülasyonlarını gerçekleştirmektir. Çalışmada temel yöntem olarak stokastik sonlu fay yöntemi kullanılmıştır. Dalga yayılım ve saha parametreleri, 1992 Erzincan depremi verileriyle doğrulanırken, kaynak parametreleri ise bölgedeki 1939 Erzincan depremi çalışmalarından derlenmiştir. Bu çalışmanın sonuçları, bölgede seçilen düğüm noktalarında modellenen ivme-zaman kayıtları, maksimum yer ivmesi ve maksimum yer hızı dağılımları ile bölgede hissedilen şiddet haritaları biçiminde ifade edilmektedir. Sayısal modeli doğrulamak amacıyla, simüle edilen yer hareketleri önce ampirik yer hareketi tahmin denklemleriyle karşılaştırmıştır. Daha sonra ise, modellenen şiddet haritası, 1939 Erzincan depremi verileriyle hazırlanmış olan gözlemsel şiddet haritası ile doğrulanmıştır

Subject Keywords

Tarihi depremle, 1939 Erzincan depremi, Yer hareketi simülasyonu, Hissedilen şiddet, Yer hareketi tahmin denklemleri

URI

http://www.idrcongress.org/uploads/apers-of-idrc-2019.pdf
https://hdl.handle.net/11511/85648

Conference Name

International Disaster Resilience Congress (IDRC2019), (26 - 28 Haziran 2019)

Collections

Department of Civil Engineering, Conference / Seminar

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Modeling of the 1939 Erzincan (Ms~7.8) Earthquake: Observations on Anticipated Ground Motions and Damage Distribution (2017-10-11) Located within a pull-apart basin at the conjunction of three active faults (North Anatolian, North East Anatolian and Ovacik Faults), Erzincan city center is one of the most hazardous regions in the world. Combination of the seismotectonic and geological settings of the region has resulted in series of significant seismic activities including the 27 December 1939 (Ms~7.8) and the 13 March 1992 (Mw=6.6) events. The former earthquake was in the preinstrumental era in the region with no available local seismo...
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Citation Formats

S. Karim Zadeh Naghshineh and A. Askan Gündoğan, “Numerical Modeling of the 1939 Erzincan Earthquake,” presented at the International Disaster Resilience Congress (IDRC2019), (26 - 28 Haziran 2019), Eskişehir, Türkiye, 2019, Accessed: 00, 2021. [Online]. Available: http://www.idrcongress.org/uploads/apers-of-idrc-2019.pdf.