Estimating earthquake hazard parameters from instrumental data for different regions in and around Turkey

Bayrak, Yusuf; Öztürk, Serkan; Çınar, Hakan; Kalafat, Doğan; Tsapanos, Theodoros M.; Koravos, G. Ch.; Leventakis, George

doi:10.1016/j.enggeo.2009.02.004

Cited by 61 publications

(28 citation statements)

References 30 publications

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“…However, present day GPS data and strain analysis show us that it is not strictly uniform and homogenous from east to west. Many studies prove that the geological settings are different for each segment (Bozkurt, 2001;Sengor et al, 2004;Bayrak et al, 2009 andPeyret et al, 2013). Therefore, the velocity and seismicity of each segment of the NAFZ is also different.…”

Section: Tectonic Settingsmentioning

confidence: 99%

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Strain Rate Analysis on the Çankiri-Bingöl Segment of the North Anatolian Fault in Turkey

Yavaşoğlu¹

2015

Earth sci. res. j.

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The North Anatolian Fault Zone (NAFZ) is one of the most important fault zones of Turkey and the world. It has produced several high magnitude earthquakes that have resulted in massive loss of lives and resources. National and international research on the North Anatolian Fault zone that Turkey resides on have been realized to better understand and predict the earthquakes produced by it. This study focuses on the Çankırı -Bingöl segment of the NAFZ. The aim of this study is to calculate the strain and latent earthquake potential of the studied area. For this purpose, geodetic data coming from several individual projects have been merged. Strain values have been calculated from the combined data and regions on the fault zone, and strain accumulations have been presented graphically. After calculation, Çankırı, Amasya and Kelkit regions were analyzed. The compressional and extensional deformation has been shown in north and south part of Çankırı basin, respectively. Eastern adjacent area of the Çankırı basin, Amasya region, has the primary branch of the NAF and its subbranches. In the Amasya region, the deformation is mostly on the main branch and the earthquake potential has risen to it. The Kelkit Valley has complex structures and inhomogeneous dispersion. Southeastern and Northwestern part of the Kelkit Valley has varied deformation in micro scale. Consequently, the study results indicate that strain accumulation is concentrated on areas such as the Çankırı basin, Amasya region, and various areas in the Kelkit Valley from west to east. La Zona de la Falla de Anatolia del Norte (NAFZ, del inglés North Anatolian Fault Zone) es una de las zonas de fallas más importantes de Turquía y del mundo. Esta falla ha generado varios terremotos de gran magnitud que han resultado en pérdidas humanas y de recursos. La investigación nacional e internacional de la Zona de la Falla de Anatolia del Norte, que atraviesa Turquía, se ha realizado con el fin de un mejor entendimiento y predicción de los terremotos que allí se originan. Este análisis se enfoca en el segmento Çankırı-Bingöl de la NAFZ. El objetivo es calcular la tensión y el potencial de terremoto del área de estudio. Con este propósito se recopiló la información geodésica de varios proyectos individuales. Los valores de tensión se calcularon de la información combinada de las regiones que componen la zona de falla y se presentan gráficamente las acumulaciones de tensión. Tras el cálculo de estos valores se analizaron las regiones Çankırı, Amasya y Kelkit. La deformación de compresión y la de extensión aparecen al norte y al sur de la cuenca Çankırı, respectivamente. El área ubicada al Este de la cuenca Çankırı, la región de Amasya, posee la rama principal de la NAFZ y sus subdivisiones. En la región de Amasya la deformación se presenta en la rama principal de la NAFZ, donde se eleva el potencial de movimientos sísmicos. El valle de Kelkit tiene estructuras complejas y dispersión no homogénea. El sudeste y el noroeste del valle Kelkit muestran una deformación variada a ...

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Section: Tectonic Settingsmentioning

confidence: 99%

“…The NAFZ system has a strike-slip and right lateral tectonic settings because of two important mechanisms: The first is the Arabian plate push it in the East, and the second, it escape to the west along the Hellenic arc. (McClusky et al, 2000;Bozkurt, 2001;Sengor et al, 2004;Bayrak et al, 2009 and.…”

Section: Tectonic Settingsmentioning

confidence: 99%

Strain Rate Analysis on the Çankiri-Bingöl Segment of the North Anatolian Fault in Turkey

Yavaşoğlu¹

2015

Earth sci. res. j.

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“…These empirical conversion relations provide homogeneity of the earthquake catalogue in terms of unified scale. For instance, different conversion relationships have been developed on a regional scale with different methods by Richter (1956a, 1956b), Kanamori (1983), Ambraseys (1990), Papescu et al (2003), Ulusay et al (2004), Deniz (2006), Scordilis (2006), Kalafat et al (2007), Grünthal (2009), Akkar et al (2010), Das (2011Das ( ), Çıvgın (2015, and Bayrak et al (2005Bayrak et al ( , 2009). On the other hand, various regression analyses have been performed for local scale by using different methods and databases.…”

Section: Introductionmentioning

confidence: 99%

The new empirical magnitude conversion relations using an improved earthquake catalogue for Turkey and its near vicinity (1900–2012)

Kadirioğlu¹,

Kartal²

2016

Turkish J Earth Sci

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Empirical magnitude conversion relationships are one of the important parameters for not only seismological studies but also seismic hazard analysis and development of the attenuation relationships. Particularly, for seismic hazard analysis, conversion of various types of magnitudes to moment magnitude, which is the most reliable and common magnitude scale, is a key requirement. Within this scope, different magnitude conversion equations have been derived by various researchers in the literature. In this study, new empirical magnitude conversion formulas for conversion from m b , M L , M d , and M S to M w were derived by using a recently established earthquake catalogue. The most important feature of the new relationships is the use of the maximum data with respect to the literature. It is a wellknown fact that having a greater number of data increases the sensitivity of the equations derived. Both orthogonal regression (OR) and ordinary least squares (OLS) were used to derive conversion equations, and the results obtained from these two methods were compared. In the derivation, 489 events with magnitudes in M w scale taken from the Harvard GCMT Catalogue were used. Residual graphs created for both methods showed that the OR method gives better results than OLS for conversion from M S to M w . On the other hand, the OLS method showed preferable performance for conversions from m b , M L , and M d to M w . The equations proposed in this study were also compared with other empirical relations in the literature.

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“…Bayrak et al (2009) Alptekin, 1978;Erdik et al, 1999;Kayabalı, 2002;Bayrak et al, 2005;Bayrak et al, 2009). Bayrak et al (2009) used different 24 source regions considering the different previous zonation studies for modeling of seismic hazard in Turkey and 3 seismic source zones in these 24 regions are related to NAFZ. In this study, we divided NAFZ into nine seismic zones for detailed study as seen in Figure 2.…”

Section: Data Source Zonation and Completeness Analysismentioning

confidence: 99%

The North Anatolian Fault Zone: an Evaluation of Earthquake Hazard Parameters

Bayrak¹,

Çınar²,

Bayrak³

2011

New Frontiers in Tectonic Research - At the Midst of Plate Convergence

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Estimating earthquake hazard parameters from instrumental data for different regions in and around Turkey

Cited by 61 publications

References 30 publications

Strain Rate Analysis on the Çankiri-Bingöl Segment of the North Anatolian Fault in Turkey

Strain Rate Analysis on the Çankiri-Bingöl Segment of the North Anatolian Fault in Turkey

The new empirical magnitude conversion relations using an improved earthquake catalogue for Turkey and its near vicinity (1900–2012)

The North Anatolian Fault Zone: an Evaluation of Earthquake Hazard Parameters

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