Determining and modeling tectonic movements along the central part of the North Anatolian Fault (Turkey) using geodetic measurements

Hakan Yavaşoĝlu; Ergin Tari; Okan Tüysüz; Ziyadin Çakir; Semih Ergintav

doi:10.1016/j.jog.2010.07.003

Determining and modeling tectonic movements along the central part of the North Anatolian Fault (Turkey) using geodetic measurements

Hakan Yavaşoĝlu^*, Ergin Tari, Okan Tüysüz, Ziyadin Çakir, Semih Ergintav

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

59 Citations (Scopus)

Abstract

The North Anatolian Fault (NAF), which extends from Karli{dotless}ova in Eastern Turkey to the Gulf of Saros in the Northern Aegean Sea, is one of the longest active strike-slip faults in the world with a length of about 1500. km. Within the North Anatolian Shear Zone (NASZ) there are long splays off the main trunk of the NAF veering towards the interior parts of Anatolia. Although the whole shear zone is still seismically active, the major seismicity is concentrated along the main branch of the NAF. Splays of the NAF dissect the shear zone into different continental blocks. The largest splay of the NAF was selected to analyze the distribution of movements between the faults delimiting these blocks. Four years of GPS measurements and modeling results indicate that the differential motion between the Anatolian collage and the Eurasian plate along the central part of the NAF is partitioned between fault splays and varies between 18.7 ± 1.6 and 21.5 ± 2.1 mm/yr with the main branch taking ~90% of the motion.

Original language	English
Pages (from-to)	339-343
Number of pages	5
Journal	Journal of Geodynamics
Volume	51
Issue number	5
DOIs	https://doi.org/10.1016/j.jog.2010.07.003
Publication status	Published - May 2011

Funding

This study is a result of the project entitled “Determination of kinematics along the North Anatolian Fault and its branches between Ladik and Ilgaz with GPS measurements” and funded by the Scientific and Technical Research Council of Turkey (TUBITAK) and Istanbul Technical University (ITU) with project numbers 101Y035 and 1636, respectively. We would like to thank all the participants in GPS measurements who helped during the fieldwork to make campaigns successful. We thank Bob King and Tom Herring for GAMIT analysis support and Afyon Kocatepe University and Geomatics Company for the equipment supports. Special thanks to Hamamözü, Osmancık and Alaca Municipalities for their logistic supports. The maps in this paper were produced using the public domain Generic Mapping Tools (GMT) software ( Wessel and Smith, 1995 )

Funders	Funder number
TUBITAK
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu
Istanbul Teknik Üniversitesi	101Y035, 1636

Keywords

Active tectonics
GPS
North Anatolian Fault
Slip rate
Turkey

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10.1016/j.jog.2010.07.003

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title = "Determining and modeling tectonic movements along the central part of the North Anatolian Fault (Turkey) using geodetic measurements",

abstract = "The North Anatolian Fault (NAF), which extends from Karli{dotless}ova in Eastern Turkey to the Gulf of Saros in the Northern Aegean Sea, is one of the longest active strike-slip faults in the world with a length of about 1500. km. Within the North Anatolian Shear Zone (NASZ) there are long splays off the main trunk of the NAF veering towards the interior parts of Anatolia. Although the whole shear zone is still seismically active, the major seismicity is concentrated along the main branch of the NAF. Splays of the NAF dissect the shear zone into different continental blocks. The largest splay of the NAF was selected to analyze the distribution of movements between the faults delimiting these blocks. Four years of GPS measurements and modeling results indicate that the differential motion between the Anatolian collage and the Eurasian plate along the central part of the NAF is partitioned between fault splays and varies between 18.7 ± 1.6 and 21.5 ± 2.1 mm/yr with the main branch taking ~90% of the motion.",

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AU - Tüysüz, Okan

AU - Çakir, Ziyadin

AU - Ergintav, Semih

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AB - The North Anatolian Fault (NAF), which extends from Karli{dotless}ova in Eastern Turkey to the Gulf of Saros in the Northern Aegean Sea, is one of the longest active strike-slip faults in the world with a length of about 1500. km. Within the North Anatolian Shear Zone (NASZ) there are long splays off the main trunk of the NAF veering towards the interior parts of Anatolia. Although the whole shear zone is still seismically active, the major seismicity is concentrated along the main branch of the NAF. Splays of the NAF dissect the shear zone into different continental blocks. The largest splay of the NAF was selected to analyze the distribution of movements between the faults delimiting these blocks. Four years of GPS measurements and modeling results indicate that the differential motion between the Anatolian collage and the Eurasian plate along the central part of the NAF is partitioned between fault splays and varies between 18.7 ± 1.6 and 21.5 ± 2.1 mm/yr with the main branch taking ~90% of the motion.

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Determining and modeling tectonic movements along the central part of the North Anatolian Fault (Turkey) using geodetic measurements

Abstract

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Keywords

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