Erzincan-Elazığ-Bingöl İlleri arası ve çevresinin Gutenberg-Richter b-değeri hesabı

Öz

Gutenberg-Richter b-değeri bir bölgenin yerel sismisitesini anlamak için kullanılan önemli parametrelerden biridir. Makalede, Erzincan-Elazığ-Bingöl İlleri arası ve çevresinin (38.33○K-39.87○K ve 39.19○D-41.58○D) Gutenberg-Richter b-değeri haritası oluşturulmuştur. Bu amaç için bölgede 01 Ocak 2000-14 Mart 2024 yılları arasında meydana gelen depremlerin (Ml>1) oluşum sıklığı ve büyüklüğü arasındaki Gutenberg-Richter (G-R) ilişkisi kullanılmıştır. Deprem verileri Kandilli Rasathanesi ve Deprem Araştırma Enstitüsü deprem kataloğundan alınmıştır. Çalışma alanı için tüm hesaplamalarda ZMap yazılımı kullanılmıştır. Bölge için b-değerleri 0.5 ile 1.8 arasında değişmektedir. Tamlık magnitüdü (Mc) ise 1.5-3.2 arasında hesaplanmıştır. En düşük b-değerleri (<0.6-0.8) Erzincan’ın kuzey-doğusunda yer alan Yedisu fay segmenti çevresi ve Elazığ-Bingöl arasında yer alan Palu fay segmentinin güney doğusunda gözlenmiştir. Sonuç olarak, çalışma alanında üst kabukta yüksek gerilme birikimi olduğu saptanmıştır.

Anahtar Kelimeler

• Gutenberg-Richter b-değeri
• Sismisite
• Erzincan-Elazığ-Bingöl İlleri
• Tamlık magnitüdü (Mc)
• Yedisu ve Palu fay segmenti

Gutenberg-Richter b-value estimation of the region between Erzincan-Elazığ-Bingöl Provinces and its surrounding

Öz

Gutenberg-Richter b-value is one of the important parameters used to understand the local seismicity of a region. In this paper, the Gutenberg-Richter b-value map of the Erzincan-Elazığ-Bingöl provinces and its surroundings (38.33○N-39.87○N and 39.19○D-41.58○D) was created. For this purpose, the Gutenberg-Richter (G-R) relationship between the frequency of occurrence and magnitude of earthquakes (Ml>1) between January 01, 2000 and March 14, 2024 was used. Earthquake data were taken from the earthquake catalog of the Kandilli Observatory and Earthquake Research Institute. ZMap software was used in all calculations for the study area. The b-values for the region vary between 0.5 and 1.8. The magnitude of completeness (Mc) was calculated between 1.5-3.2. The lowest b-values (<0.6-0.8) were observed around the Yedisu fault segment located north-east of Erzincan and south-east of the Palu fault segment located between Elazığ and Bingöl. Consequently,it is determined in the study rea that there are high stress accumulation in the upper crust.

Anahtar Kelimeler

• Seismicity
• Gutenberg-Richter b-value
• Erzincan-Elazığ-Bingöl Provinces
• Magnitude of completeness (Mc)
• Yedisu and Palu fault segments

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