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The Armutlu Network: An Investigation on S eismotectonic S etting of Armutlu-Yalova Region

This research paper explores the seismotectonic setting of the Armutlu-Yalova region through a comprehensive investigation. It examines factors such as Coulomb stress change, clustering of earthquakes, aftershock studies, and tectonic models.

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The Armutlu Network: An Investigation on S eismotectonic S etting of Armutlu-Yalova Region

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  1. The Armutlu Network: An Investigation on Seismotectonic Setting of Armutlu-Yalova Region Ş. Barış1, B. Tunç 1, H. Woith2, H. Grosser 2, S. Irmak 1, B. Lühr 2, D. Çaka 1, S. Tunç 1, E. Günther 2, M. F. Özer 1 and J. Zschau 2 International Seismological Workshop Managing Waveform Data & Related Metadata for Seismic Networks Helwan, Egypt, Nov. 8-17, 2009 1 Kocaeli University, Earth and Space Sciences Research Center-Turkey 2 GeoForschung Zentrum, Potsdam-Germany

  2. North-Anatolian Fault Zone (NAFZ) Regional Focus on the Armutlu Peninsula! modifiedfromLorenzo-Martin (2006)

  3. Migration of large earthquakes along the NAFZ

  4. Nov. 2009 The Armutlu-Experiment Tectonic Situation

  5. October 2008 The Armutlu-Experiment Motivation – Coulomb Stress Change Wang et al., 2006

  6. Motivation - Clustering

  7. Polat 2002 Aftershock Studies of Izmit 1999 Özalaybey 2002 Cakir 2003

  8. October 2008 The Armutlu-Experiment Motivation - Seismicity between 2002-2007

  9. COMMUNICATION TYPE

  10. SENSOR TYPE

  11. SENSOR TYPE

  12. Seismicity in 09/2005-07/2007

  13. 1985-2006 ~8500 eqs TOMOG3D, Zhao, D., 2002

  14. ~2800 eqs TOMOG3D, Zhao, D., 2002

  15. Number of events-Depth Distribution Before TOMOG3D After TOMOG3D

  16. Modified Joint Hypocenter Determination Method, Hurukawa, 2009 (First Trial)

  17. SeisComp 3 (07/2009) – Trial and Learning Phase

  18. Tectonic model Eisenlohr (1995) Aftershocks of the Oct. 24, 2006 event Sept. 2005 – Feb. 2006 seismicity (Armutlu network, preliminary results) Aug. 1999 aftershocks (Task Force) 1999 aftershocks (Polat et al. 2002, Özalaybey et al. 2002, Karabulut et al. 2002, Örgülü & Aktar 2001) 1999 western end of the 1999 Izmit rupture (ARMIJO et al. 2002) geologos Iznik-Mekece fault status 2006 November First attempt of an interpretation based on Eisenlohr (1995). The active faults are Riedel shears Within a rightlateral shear zone which rotates clockwise. Tectonic model from EISENLOHR (1995) TR geology

  19. R E S U L T S • Tectonic structure is very complicated • Certain clusters, but mostly diffused seismicity • Clockwise rotation • Need better 1-D crustal model, seismic experiment, improvement location procedure by using crosscorrelataion metheod, HypoDD or similar algorithm • Data exchange necessary with surrounding networks • Add new station for better coverage • Online transmission is installing • SeisComp is installed and testing • Near future data exchange with ORFEUS/IRIS/FDSN or similar organizations, common research projects?

  20. THANK YOU FOR YOUR ATTENTION!

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