AI Summary & Key Takeaways
AI InsightSimultaneously with the measurements, the relationship between the variations of radon concentration and the seismic movements on the considered fault line is searched
📌 3 Key Takeaways
Abstract
Afyonkarahisar-Sultandagi region is one of the seismically most active regions in western Anatolia. The region suffered destructive earthquakes that occurred in both historical and instrumental periods. The last two destructive earthquakes in the region occurred on 03.02.2002 near western part of Çay and south of Lake Eber, with magnitudes of 6.5 and 6.2. These earthquakes that caused surface ruptures in Maltepe and Çay settlements and nearby areas in the western parts of the Sultandağı Fault, are the final members of the earthquake migration from southeast to northwest, which began in southeastern part of the Sultandağı Fault in 1921, and progressed northwestward in 1946 and 2000. The probability of continuing westward earthquake migration along the AfyonAkşehir Graben, active faults mapping in Afyonkarahisar vicinity and existing seismic gap within the western part of the Afyon-Akşehir Graben indicate the possibility of destructive earthquakes in future in Afyonkarahisar and nearby area. Therefore, multidisciplinary studies have been initiated by the researchers from Geomatics Engineering, Geology Engineering and Physics Departments of Afyon Kocatepe University. In these studies, 18 GNSS points have been constructed at the western parts of the Sultandagi Fault. The two campaigns of GNSS measurements carried out at these points in the years 2012-2013 and the primary velocity field has been determined. Two additional measurement campaigns will be conducted in the years 2014-2015 to improve the reliability of the velocity field. Therewithal, the fieldwork for Paleostress analysis began in 2013 and still continues. In addition, the changes of groundwater radon gas concentration are being measured systematically on the fault line. Simultaneously with the measurements, the relationship between the variations of radon concentration and the seismic movements on the considered fault line is searched
Özet
Afyonkarahisar-Sultandağı bölgesi Batı Anadolu'nun sismik açıdan en aktif bölgelerinden birisidir. Tarihsel ve aletsel dönemlerde çok sayıda yıkıcı depremden etkilenen bölge, son olarak 03.02.2002 tarihinde dışmerkezleri Eber Gölü güneyi ve Çay batısı olan 6.5 ve 6.2 büyüklüklerinde iki depremle sarsılmıştır. Sultandağı Fayı'nın batı bölümünde, Çay ve çevresinde yüzey kırığı oluşturan bu depremler, 1921 yılında Argıtanlı-Akşehir depremi ile başlayan, 1946 ve 2000 yıllarında Akşehir ve Sultandağı'nda etkili olarak Sultandağı Fayı üzerinde kuzeybatıya doğru ilerleyen deprem göçünün bir parçasıdır. Bu deprem göçünün batıya doğru devam etme olasılığı, Afyonkarahisar ve çevresinde haritalanan diri faylar ve bu alanda varolan sismik boşluk, gelecekte Afyonkarahisar ili civarında meydana gelebilecek yıkıcı bir deprem olasılığını ortaya koymaktadır. Bu nedenle Afyon Kocatepe Üniversitesi Harita Mühendisliği, Jeoloji Mühendisliği ve Fizik bölümünden araştırmacılarla Sultandağı'nın batı kısmının tektonik özelliklerini incelemek için multidisipliner çalışmalar başlatılmıştır