Tectonic activity inferred from velocity field of GNSS measurements in Southwest of Turkey
- PDF / 3,023,160 Bytes
- 13 Pages / 439.37 x 666.142 pts Page_size
- 30 Downloads / 180 Views
Tectonic activity inferred from velocity field of GNSS measurements in Southwest of Turkey ˙ Tiryakio˘glu · S. Erdo˘gan · N.O. Aykut · T. Baybura · B. Akpinar · E. Gülal · I. ˙ Yilmaz · T. Öcalan · Ü.Y. Kalyoncuo˘glu · A.K. Telli · E. Ata · K. Gümü¸s · F. Taktak · I. M.N. Dolmaz · Ö. Elitok · H. Erdo˘gan · M. Soycan
Received: 29 March 2012 / Accepted: 19 November 2012 / Published online: 15 January 2013 © Akadémiai Kiadó, Budapest, Hungary 2013
Abstract Turkey occupies a critical segment in the Alpine-Himalayan orogenic belt that is characterized by many active fault lines. Numerous earthquakes of varying magnitudes have occurred on these fault lines over the years. A significant portion of these earthquakes have been recorded along the Fethiye Burdur Fault Zone (FBFZ). Unfortunately, the latest earthquakes that happened on the FBFZ led to a large loss of human life and extensive economic losses. Southwest Anatolia, including the FBFZ, is monitored by 44 Global Navigation Satellite System (GNSS) stations, comprised of 16 permanent and 28 campaign stations. Measurements have been conducted by combining observations from 2003 to 2006 (Erdogan et al. in J. Earthq. Eng. 12(2):109–118, 2008) with new observations from 2009 and 2010. The combined processes have yielded an updated velocity field of the region. In E. Gülal () · N.O. Aykut · B. Akpinar · A.K. Telli · E. Ata · K. Gümü¸s · F. Taktak · T. Öcalan · M. Soycan Department of Geomatics Engineering Davutpasa, Yildiz Technical University, Esenler, Istanbul, Turkey e-mail: [email protected] N.O. Aykut e-mail: [email protected] B. Akpinar e-mail: [email protected] A.K. Telli e-mail: [email protected] E. Ata e-mail: [email protected] K. Gümü¸s e-mail: [email protected] F. Taktak e-mail: [email protected] T. Öcalan e-mail: [email protected] M. Soycan e-mail: [email protected]
110
Acta Geod Geophys (2013) 48:109–121
addition, the effects of the post 2007 earthquakes on the GNSS stations were also investigated. The strain analysis based on the observations made between 2003 and 2010 display high consistency with the earthquakes that occurred in the region. Also, it was observed that the strain analysis is in accordance with the North-South opening created as a result of the African plate being submerged under the Anatolian plate in the southern of the island of Crete. Keywords Burdur-Fethiye fault zone · Active tectonics · GNSS observations · Analysis of the velocity field · Strain data analysis 1 Introduction Repeated Global Navigation Satellite System (GNSS) observations allow the measurement of crustal deformations. The observations are used in the analysis of strains on the ground, which are powerful parameters for the prediction of the seismic hazards. The use of strain analysis, combined with other geophysical parameters, increases the capability of prediction methods. The accuracy of the point velocities has a direct influence on the accuracy of the strain analysis. Therefore, it is extremely important to obtain the most accurate pos
Data Loading...
