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ERZİNCAN VE ÇEVRESİNDE P DALGASI SOĞURULMASI

ABSORPTION OF THE P WAVE IN ERZİNCAN AND ITS SURROUNDING

Journal Name:

  • Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi

Publication Year:

  • 2008

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
In this study, we aimed to obtain quality factor and absorption coefficient of crust of Erzincan city and its surrounding. In total 89 near-field earthquake data recorded by the Erzincan Station of Atatürk University Earthquake Research Center (AUERC) were used for the calculations. Maximum amplitudes of Pn waves were used in order to compute the earthquake magnitude. The linear equations systems obtained for the all events were solved using the least-squares method. Thus, a local magnitude formula as a function of amplitude was described for the Erzincan station as (ML=0.5148logA+0.0039Δ+4.2104). Amplitude normalization process was performed for a reference value ML= 4, so as to correct effect of the magnitudes. The attenuation on calculation of absorption coefficient (γ) of 0.0176 km-1 and quality factor (Q) 28.5 were obtained with the assistance of normalized amplitudes values for the region.
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Abstract (Original Language): 
Bu çalışmada, Erzincan ve çevresinde kabuk için kalite faktörü ve soğurulma katsayısının bulunması amaçlanmıştır. Hesaplamalar için Atatürk Üniversitesi Deprem Araştırma Merkezi (AÜDAM) Erzincan istasyonuna ait 89 adet yakın alan deprem verisi kullanılmıştır. Deprem büyüklüğünün hesaplamak için Pn dalgasının en büyük genlik değeri kullanılmıştır. Tüm depremler için oluşturulan lineer denklem sistemi en küçük kareler yöntemi ile çözülmüştür. Böylece Erzincan istasyonu için genlik bağımlı bir lokal büyüklük eşitliği (ML=0.5148logA+0.0039Δ+4.2104) bulunmuştur. Genlikler üzerindeki büyüklük etkisini gidermek için ML= 4’e göre büyüklük normalizasyonu işlemi yapılmıştır. Normalize edilmiş genlikler yardımıyla bölge için soğurulma katsayısı (γ) 0.0176 km-1, kalite faktörü (Q) 28.5 olarak bulunmuştur.
FULL TEXT (PDF): 
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