Determining the main strand of the Eskişehir strike-slip fault zone using subsidiary structures and seismicity: a hypothesis tested by seismic reflection studies

The Eskişehir Fault Zone is one of the major neotectonic structures of Turkey, extending from İnegöl (Bursa) to Cihanbeyli (Konya). The fault zone presents a considerable seismic risk for the city of Eskişehir but the exact locations of active segments and the source of the major seismic event, the 1956 earthquake (M = 6.5) that occurred in the instrumental period (from 1900 to 2013), have been debated in recent literature. The structural data obtained from field studies indicate an approximately N60W-trending main strand of the right lateral strike-slip Eskişehir Fault Zone. This trend corresponds to the en echelon bends on the course of the Sarısu River. Using this concurrence, the positions of Bahçehisar and the Çukurhisar-Sultandere segments are proposed and checked by seismic reflection studies. The seismic sections disclosing positive flower structures confirm the hypothesized position of the Çukurhisar-Sultandere segment. The relocation of epicenters and focal mechanism solutions of seismic events in 1956, 1990, 2010, and 2013 indicate that the Çukurhisar-Sultandere segment might be the rupture source of the 1956 event and is a possible potential seismic source for an earthquake that could seriously affect the Eskişehir settlement.

Determining the main strand of the Eskişehir strike-slip fault zone using subsidiary structures and seismicity: a hypothesis tested by seismic reflection studies

The Eskişehir Fault Zone is one of the major neotectonic structures of Turkey, extending from İnegöl (Bursa) to Cihanbeyli (Konya). The fault zone presents a considerable seismic risk for the city of Eskişehir but the exact locations of active segments and the source of the major seismic event, the 1956 earthquake (M = 6.5) that occurred in the instrumental period (from 1900 to 2013), have been debated in recent literature. The structural data obtained from field studies indicate an approximately N60W-trending main strand of the right lateral strike-slip Eskişehir Fault Zone. This trend corresponds to the en echelon bends on the course of the Sarısu River. Using this concurrence, the positions of Bahçehisar and the Çukurhisar-Sultandere segments are proposed and checked by seismic reflection studies. The seismic sections disclosing positive flower structures confirm the hypothesized position of the Çukurhisar-Sultandere segment. The relocation of epicenters and focal mechanism solutions of seismic events in 1956, 1990, 2010, and 2013 indicate that the Çukurhisar-Sultandere segment might be the rupture source of the 1956 event and is a possible potential seismic source for an earthquake that could seriously affect the Eskişehir settlement.

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Kaynak Göster

Bibtex @ { tbtkearth143891, journal = {Turkish Journal of Earth Sciences}, issn = {1300-0985}, eissn = {1303-619X}, address = {}, publisher = {TÜBİTAK}, year = {2015}, volume = {24}, pages = {1 - 20}, doi = {10.3906/yer-1406-5}, title = {Determining the main strand of the Eskişehir strike-slip fault zone using subsidiary structures and seismicity: a hypothesis tested by seismic reflection studies}, key = {cite}, author = {Seyitoğlu, Gürol and Ecevitoğlu, G. Berkan and Kaypak, Bülent and Güney, Yücel and Tün, Muammer and Esat, Korhan} }
APA Seyitoğlu, G , Ecevitoğlu, G , Kaypak, B , Güney, Y , Tün, M , Esat, K . (2015). Determining the main strand of the Eskişehir strike-slip fault zone using subsidiary structures and seismicity: a hypothesis tested by seismic reflection studies . Turkish Journal of Earth Sciences , 24 (1) , 1-20 . DOI: 10.3906/yer-1406-5
MLA Seyitoğlu, G , Ecevitoğlu, G , Kaypak, B , Güney, Y , Tün, M , Esat, K . "Determining the main strand of the Eskişehir strike-slip fault zone using subsidiary structures and seismicity: a hypothesis tested by seismic reflection studies" . Turkish Journal of Earth Sciences 24 (2015 ): 1-20 <https://dergipark.org.tr/tr/pub/tbtkearth/issue/12038/143891>
Chicago Seyitoğlu, G , Ecevitoğlu, G , Kaypak, B , Güney, Y , Tün, M , Esat, K . "Determining the main strand of the Eskişehir strike-slip fault zone using subsidiary structures and seismicity: a hypothesis tested by seismic reflection studies". Turkish Journal of Earth Sciences 24 (2015 ): 1-20
RIS TY - JOUR T1 - Determining the main strand of the Eskişehir strike-slip fault zone using subsidiary structures and seismicity: a hypothesis tested by seismic reflection studies AU - Gürol Seyitoğlu , G. Berkan Ecevitoğlu , Bülent Kaypak , Yücel Güney , Muammer Tün , Korhan Esat Y1 - 2015 PY - 2015 N1 - doi: 10.3906/yer-1406-5 DO - 10.3906/yer-1406-5 T2 - Turkish Journal of Earth Sciences JF - Journal JO - JOR SP - 1 EP - 20 VL - 24 IS - 1 SN - 1300-0985-1303-619X M3 - doi: 10.3906/yer-1406-5 UR - https://doi.org/10.3906/yer-1406-5 Y2 - 2021 ER -
EndNote %0 Turkish Journal of Earth Sciences Determining the main strand of the Eskişehir strike-slip fault zone using subsidiary structures and seismicity: a hypothesis tested by seismic reflection studies %A Gürol Seyitoğlu , G. Berkan Ecevitoğlu , Bülent Kaypak , Yücel Güney , Muammer Tün , Korhan Esat %T Determining the main strand of the Eskişehir strike-slip fault zone using subsidiary structures and seismicity: a hypothesis tested by seismic reflection studies %D 2015 %J Turkish Journal of Earth Sciences %P 1300-0985-1303-619X %V 24 %N 1 %R doi: 10.3906/yer-1406-5 %U 10.3906/yer-1406-5
ISNAD Seyitoğlu, Gürol , Ecevitoğlu, G. Berkan , Kaypak, Bülent , Güney, Yücel , Tün, Muammer , Esat, Korhan . "Determining the main strand of the Eskişehir strike-slip fault zone using subsidiary structures and seismicity: a hypothesis tested by seismic reflection studies". Turkish Journal of Earth Sciences 24 / 1 (Mart 2015): 1-20 . https://doi.org/10.3906/yer-1406-5
AMA Seyitoğlu G , Ecevitoğlu G , Kaypak B , Güney Y , Tün M , Esat K . Determining the main strand of the Eskişehir strike-slip fault zone using subsidiary structures and seismicity: a hypothesis tested by seismic reflection studies. Turkish Journal of Earth Sciences. 2015; 24(1): 1-20.
Vancouver Seyitoğlu G , Ecevitoğlu G , Kaypak B , Güney Y , Tün M , Esat K . Determining the main strand of the Eskişehir strike-slip fault zone using subsidiary structures and seismicity: a hypothesis tested by seismic reflection studies. Turkish Journal of Earth Sciences. 2015; 24(1): 1-20.
IEEE G. Seyitoğlu , G. Ecevitoğlu , B. Kaypak , Y. Güney , M. Tün ve K. Esat , "Determining the main strand of the Eskişehir strike-slip fault zone using subsidiary structures and seismicity: a hypothesis tested by seismic reflection studies", Turkish Journal of Earth Sciences, c. 24, sayı. 1, ss. 1-20, Mar. 2015, doi:10.3906/yer-1406-5