Neotectonic structures in İzmir Gulf and surrounding regions (western Turkey): Evidences of strike-slip faulting with compression in the Aegean extensional regime

Ocakoğlu, Neslihan; Demirbağ, Emin; Kuşçu, İsmail

doi:10.1016/j.margeo.2005.06.004

Cited by 86 publications

(67 citation statements)

References 23 publications

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“…Tuzla Fault, the activity of which has been agreed by the majority of researchers (Ş aroglu et al 1992;Barka et al 1998;Benetatos et al 2006;Aktug and Kılıçoglu 2006) is one of the most important faults in the area. The earthquake occurred on Doganbey promontory (Ocakoglu et al 2006). Strike-slip faults in Turkey generally have great lengths longer than then 50 km and so that researchers accepted that the Tuzla fault continue under the sea bed (Aktug and Kılıçoglu 2006).…”

Section: Study Areamentioning

confidence: 99%

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Natural radioactivity levels of great soil groups in Seferihisar Geothermal Region, Turkey

et al. 2015

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In this study, measurement of natural radioactivity and analyses of physical properties of soil were carried on great soil groups around the Seferihisar Geothermal Region. The radioactivity levels in soils were analyzed using scintillation gamma spectroscopy. The activity concentrations for 226 Ra, 232 Th, and 40 K range from 7.1 to 32.0 Bq kg -1 , 15.2 to 35.9 Bq kg -1 and 223.1 to 802.2 Bq kg -1 , respectively. Obtained data was compared with average values given by UNSCEAR and the other studies. The radium equivalent activity (Ra eq ) in soil samples ranges from 42.2 to 144.7 Bq kg -1 which are lower than the suggested maximal admissible value of 370 Bq kg -1 recommended by OECD. In addition, the value of external exposure dose has been determined from the content of natural radionuclides in soil. The absorbed dose rates change between 20.6 and 70.9 nGy h -1 with a mean value of 46.7 nGy h -1 which is lower than the global average value of 55 nGy h -1 . The annual effective dose rates varied from 25.2 to 87.0 lSv year -1 with an average value of 57.3 lSv year -1 . Obviously, all the calculated values were lower than this value, and therefore the environment of Tuzla Fault can be regarded as an area with normal natural background radiation.

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Section: Study Areamentioning

confidence: 99%

“…1). In the area several fault line are determined to be active faults and many reverse fault are related to paleo-tectonic activities (Ocakoglu et al 2006;İçhedef et al 2014;Tarakçı et al 2014).…”

Section: Geological Settingsmentioning

confidence: 99%

Natural radioactivity levels of great soil groups in Seferihisar Geothermal Region, Turkey

et al. 2015

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“…Izmir as a high populated city settled on seismically active faults. Thus, there is always high seismic risk underlined in many studies [10][11][12][13][14][15] in Izmir, like the North Anatolian Fault Zone.…”

Section: Micro-tectonics Features Of the Region Of Interestmentioning

confidence: 99%

Geodetic Network Design and Optimization on the Active Tuzla Fault (Izmir, Turkey) for Disaster Management

Halicioglu¹

2008

Sensors

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Both seismological and geodynamic research emphasize that the Aegean Region, which comprises the Hellenic Arc, the Greek mainland and Western Turkey is the most seismically active region in Western Eurasia. The convergence of the Eurasian and African lithospheric plates forces a westward motion on the Anatolian plate relative to the Eurasian one. Western Anatolia is a valuable laboratory for Earth Science research because of its complex geological structure. Izmir is a large city in Turkey with a population of about 2.5 million that is at great risk from big earthquakes. Unfortunately, previous geodynamics studies performed in this region are insufficient or cover large areas instead of specific faults. The Tuzla Fault, which is aligned trending NE-SW between the town of Menderes and Cape Doganbey, is an important fault in terms of seismic activity and its proximity to the city of Izmir. This study aims to perform a large scale investigation focusing on the Tuzla Fault and its vicinity for better understanding of the region's tectonics. In order to investigate the crustal deformation along the Tuzla Fault and Izmir Bay, a geodetic network has been designed and optimizations were performed. This paper suggests a schedule for a crustal deformation monitoring study which includes research on the tectonics of the region, network design and optimization strategies, theory and practice of processing. The study is also open for extension in terms of monitoring different types of fault characteristics. A one-dimensional fault model with two parameters -standard OPEN ACCESSSensors 2008, 8 4743 strike-slip model of dislocation theory in an elastic half-space -is formulated in order to determine which sites are suitable for the campaign based geodetic GPS measurements. Geodetic results can be used as a background data for disaster management systems.

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“…Onshore faults mapped by Chatzipetros et al (2013) on Lemnos, Agios Efstratios, Lesvos and Chios Islands allow inferring their offshore prolongation. Ocakoglu et al (2004Ocakoglu et al ( , 2005 provided new data on faulting for the regions of Izmir Bay and Kusadasi.…”

Section: Introductionmentioning

confidence: 99%

Offshore Faulting in the Aegean Sea: A Synthesis Based on Bathymetric and Seismic Profiling Data

Sakellariou

Tsampouraki-Kraounaki

2017

geosociety

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Neotectonic structures in İzmir Gulf and surrounding regions (western Turkey): Evidences of strike-slip faulting with compression in the Aegean extensional regime

Cited by 86 publications

References 23 publications

Natural radioactivity levels of great soil groups in Seferihisar Geothermal Region, Turkey

Natural radioactivity levels of great soil groups in Seferihisar Geothermal Region, Turkey

Geodetic Network Design and Optimization on the Active Tuzla Fault (Izmir, Turkey) for Disaster Management

Offshore Faulting in the Aegean Sea: A Synthesis Based on Bathymetric and Seismic Profiling Data

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