BibTex RIS Kaynak Göster
Yıl 2016, Cilt: 2 Sayı: 1, 37 - 48, 22.05.2016

Öz

Kaynakça

  • Angelier, J. and Mechler, P., (1977), Sur une methode graphique de recherche des contraintes principales egalcment utilisable en tectonique et en seismologie: la methode des diedres droits. Bull. Soc. Geol. Fr., 7(19): 1309-1318.
  • Angelier, J., (1979), Determination of the mean principal direction of stresses for a given fault population, Tectonophysics 56, T17–T26.
  • Angelier, J., Lyberis, N., Le Pichon, X., Barrier, E., and Huchon, P., (1982), The tectonic development of the Hellenic arc and the Sea of Crete: A synthesis: Tectonophysics,v. 86, p. 159–196.
  • Angelier, J., (1991), Inversion directe et recherche 4-D: comparaison physique et mathernatique de deux methodes de determination des tenseurs des paleocontraintes en tectonique de failles. C.R. Acad Sci., Paris, 312(11): 1213-1218.
  • Beekman, P.H. (1966), Hasan Dağı–Melendiz Dağı bolgesinde Pliosen ve Kuvaterner volkanizma faaliyetleri [Pliocene and Quaternary volcanism in Hasan Dağı-Melendiz Dağı region]. MTA Bulletin, 66, 88–103 [in Turkish with English abstract].
  • Bott, M. H. P., (1959), The mechanism of oblique-slip faulting. Geological Magazine, 96, 109-117.
  • Bozkurt, E. (2001), Neotectonics of Turkey—A synthesis, Geodin. Acta, 14, 3–30, doi:10.1016/S0985-3111(01)01066-X.
  • Carey-Gailhardis, E. and Mercier, J. L. (1987), A numerical method for determining the state of stress using focal mechanisms of earthquake populations. Earth planet. Sci. Lett. 82, 165-179.
  • Çemen, İ., Goncuoğlu, M.C. and Dirik, K. (1999), Structural evolution of the Tuz Golu basin in Central Anatolia, Turkey. The Journal of Geology, 107, 693–706.
  • Delvaux, D., 1993. The TENSOR program for reconstruction: examples from the East African and the Baikal rift zones.Terra Abstracts. Abstract Supplement, 1 to Terra Nova, 5: 216.
  • Delvaux D., Moeys, R., Stapel, G. et al. (1997), Paleostress reconstruction and geodynamics of the Baikal region, Central Asia, Part 2, Cenozoic rifting. Tectonophysics, 282, 1-38.
  • Delvaux, D. and Sperner, B. (2003), Stress tensor inversion from fault kinematic indicators and focal mechanism data: the TENSOR program. In: Nieuwland, D. (Ed.), New Insights into Structural Interpretation and Modelling: Geol. Soc. Lond. Spec. Publ., vol. 212, pp. 75–100.
  • Dreger, D. S., and Helmberger, D. V. (1993), Determination of Source Parameters at Regional Distances with Single Station or Sparse Network Data, J.Geophys. Res. 98, 8107-8125.
  • Dreger, D. and Romanowicz, B. (1994), Source Characteristics of Events in the San Francisco Bay Region, USGS Open-file report, 94-176, 301-309.
  • Dreger, D. S., (2003), TDMT_INV: Time domain seismic moment tensor INVersion. International Handbook of Earthquake and Engineering Seismology, ed. W. K. Lee, Boston: Academic Press 81B, 1,627.
  • Gephart, J. W. and Forsyth, D. W. (1984), An improved method for determining the regional stress tensor using earthquake focal mechanism data: Application to the San Fernando earthquake sequence, J. Geophys. Res. 89, 9,305-9,320.
  • Görür, N., Okay, F.Y., Seymen, İ. and Şengör, A.M.C. (1984), Palaeotectonic evolution of the Tuzgolu Basin complex, central Turkey: sedimentary record of a Neo-Tethyan closure. In: Dixon, J.E. and Robertson, A.H.F. (eds), The Geological Evolution of the Eastern Mediterranean. Geological Society of London, Special Publications, 17, 467–482.
  • Güven, İ. T., (1999), Yapay Sismogram Hesaplama Yöntemi ile Ankara ve Civarının Yerkabuğu Yapısının Modellenmesi, Master Thesis (in Turkish, unpublished).
  • Heidbach, O., Tingay, M., Barth, A., Reinecker, J., Kurfess, D., and Miller, B., (2010), Global crustal stress pattern based on the World Stress Map database release 2008, Tectonophysics, 482, 3-15.
  • Herrmann, R. B. and Wang, C. Y. (1985), A comparison of synthetic seismograms, Bull. Seism. Soc. Am. 75, 41-56.
  • Irmak,T.S. (2000). The source-rupture processes of recent large Turkey earthquakes. Individual studies by participants to the International Institute of Seismology and Earthquake Engineering, 36, 131-143.
  • Irmak, T. S. (2013). Focal mechanisms of small-moderate earthquakes in Denizli Graben (SW Turkey). Earth, Planets and Space, 65(9), 943-955.
  • Jackson, J., and McKenzie, D. (1984) Active tectonics of the Alpine-Himalayan belt between Turkey and Pakistan,Geophys. J. Royal Astronom. Soc. Vol. 77, pp. 185-264.
  • Jost, M. L., and Herrmann, R. (1989), A student's guide to and review of moment tensors, Seismological Research Letters, 60, 37-57.
  • Kalafat, D., Kekovalı, K., Deniz, P., Güneş, Y., Pınar, A., and Horasan, A., (2008), 31 Temmuz 2005-1 Ağustos 2005 ve 20-27 Aralık 2007 Afşar-Bala (Ankara) Deprem Dizisi (July 31, 2005 - August 1, 2005 and December 20-27, 2007 Afşar-Bala (Ankara) Earthquake Sequence, İstanbul Yerbilimleri Dergisi, 21(2), 47-60 [in Turkish with English abstract].
  • Kalafat, D., Kekovalı, K., Güneş, Y., Yılmazer, M., Kara, M., Deniz, P., and Berberoğlu, M. (2009), Türkiye ve çevresi faylanma-kaynak parametreleri (mt) kataloğu (1938-2008) A Catalogue of Source Parameters of Moderate and Strong Earthquakes for Turkey and its Surrrounding Area (1938-2008), Kandilli Observatory and earthquake Research Institute report.
  • Koçyiğit, A. and Beyhan, A. (1998), A new intracontinental transcurrent structure: the Central Anatolian Fault Zone, Turkey. Tectonophysics, 284, 317– 336.
  • Koçyiğit, A. and Deveci, Ş. (2008), Ankara orogenic phase, its age and transition from thrusting-dominated palaeotectonic period to the strike-slip neotectonic period, Ankara (Turkey). Turkish Journal of Earth Sciences, 17, 433–459.
  • Koçyiğit, A. (2009), Ankara’nın depremselliği ve 2005–2007 Afşar (Bala-Ankara) depremlerinin kaynağı [Seismicity of Ankara and source of 2005–2007 Afşar (Bala- Ankara) earthquakes]. Harita Dergisi, 141, 1–12 [in Turkish with English abstract].
  • Korhan, U.S., Özel, N.M., and Necmioğlu, Ö., (2011), Detection and Identification of Low-magnitude Seismic Events near Bala, Central Turkey, Using Array-based Waveform Correlation, Seism.Res.Lett. 82(1), 97-103.
  • Langston, C.A., (1981), Source inversion of seismic waveforms: the Koyna, India, earthquakes of September 13, 1967. Bull. Seis. Soc. Am., 71:1-24.
  • McClusky, S. et al. (2000), GPS constraints on plate kinematics and dynamics in the eastern Mediterranean and Caucasus, J. Geophys. Res., vol. 105, pp. 5695–5719.
  • McKenzie, D. P. (1969), The relation between fault plane solutions for earthquakes and the directions of the principal stresses, Bull. Seism. Soc. Am. Vol. 59, no. 2, pp. 591-601.
  • McKenzie, D. P. (1972), Active tectonics of the Mediterranean Region, Geophys. J. Royal Astronom. Soc., 30, 109-185.
  • Michael, A. J. (1984), Determination of stress from slip data: Faults and folds, J. Geophys. Res. 89, 11,517-11,526.
  • Öztürk, S. and Bayrak, Y., (2006), 31 Temmuz 2005 Bala (Ankara) depremi, MD=4.9, artçı şok dizisinin istatistiksel olarak değerlendirilmesi ve artçı şok parametrelerinin bölgesel değişimleri, Journal of İstanbul Kültür University, 4(2), 145-155. [in Turkish]
  • Pasyanos, M. E., Dreger, D. S. and Romanowicz, B. (1996), Towards Real-Time Determination of Regional Moment Tensors, Bull. Seism. Soc. Am., 86, 1255-1269.
  • Plenefisch, T., and Bonjer K. P., (1997), The stress field in the Rhine Graben area inferred from earthquake focal mechanisms and estimation of frictional parameters. Tectonophysics, 275, 71-97.
  • Raleigh, C. B., Helay, J. H. and J.D. Bredehoeft, (1972), Faulting and crustal stress at Rangely, Colorado, in Flow and Fracture of Rocks, Geophys.Monog. Ser., vol. 16, edited by H. C. Heard et al., pp. 275-284, AGU, Washington D. C.
  • Reches, Z., (1987), Mechanical aspects of pull-apart basins and push-up swells with applications to the Dead Sea Transform, Tectonophysics, 141, 75 – 88.
  • Reilinger, R.E., McClusky., S., Oral, M.B., King, R.W. and Toksöz, M.N. (1997), Global Positioning System measurements of present-day crustal movements in the Arabia-Africa-Eurasia plate collision zone. Journal of Geophysical Research 102 (B5), 9983–9999.
  • Rivera, L., and Cisternas, A., (1990). Stress tensor and fault plane solutions for a population of earthquakes. Bull. Seismol. Soc.Am. 80 (3), 600–614.
  • Saikia, C. K., (1994), Modified frequency-wavenumber algorithm for regional seismograms using Filon’s quadrature; modeling of Lg waves in eastern North America, Geophysical Journal International, 118, 142-158.
  • Scherbaum, F., (1994), Basic Concepts in Digital Signal Processing for Seismologists: Springer-Verlag New York, Inc (Mar 5 1996).
  • Snoke, J. A., Munsey, J. W. Teague, A. G. and Bollinger, G. A. (1984), A program for focal mechanism determination by combined used of polarity and SV-P amplitude ratio data, Earthquake Notes 55, p. 15.
  • Şengör, A.M.C. and Yılmaz, Y. (1981), Tethyan evolution of Turkey: a plate tectonic approach. Tectonophysics 75, 181–241.
  • Tan, O., et al. (2010), Bala (Ankara) earthquakes: Implications for shallow crustal deformation in central Anatolian section of the Anatolian platelet (Turkey), Turk. J. Earth Sci., 19, 449–471, doi:10.3906/yer-0907-1.

Present-Day Stress Field in the Bala – Ankara (Turkey) Region from Inversion of Focal Mechanisms

Yıl 2016, Cilt: 2 Sayı: 1, 37 - 48, 22.05.2016

Öz

The focal mechanisms of the small-moderate earthquakes occurring in the brittle part of the crust are the expression of the present regional stress field and how these stresses act on existing structures in the crust. Especially for the middle and lower crust, for which borehole measurements are not possible, the analysis of focal mechanisms is the only tool for in-situ stress measurements. For this reason, the focal mechanisms of the 2007-2008 earthquakes (23 earthquakes) are obtained from both first motion analysis of vertical P waves (4 earthquakes) and time domain regional body waveforms inversion (19 earthquakes). Using other sources in total 37 earthquake focal mechanisms were obtained to determine active tectonics and the present-day stress field in the Bala-Ankara region. The focal mechanism of the analyzed earthquakes occurred in the Bala-Ankara region obtained both from first motion analysis and time domain moment tensor analysis indicate that the predominant earthquake mechanism is the strike-slip mechanism. All earthquakes occur at shallow depths. Only two events occur at 26 km and 36 km depths. The slip rate is calculated as 0.83 mm/year. The state of recent stress and ongoing deformation in Bala-Ankara region is primarily controlled by the north-northwest drift of the African and Arabian plates respectively. In terms of stress orientations, the Bala-Ankara region is affected by stresses with a general NW-SE orientation of horizontal maximum principal axis (SHmaxN169oE) and NE-SW orientation of minimum principal axis (SHminN79oE). However, the extensional features (a few normal faulting focal mechanisms) are observed and these features reflect local stress inhomogeneous compared to the regional stress which is strike-slip.

Kaynakça

  • Angelier, J. and Mechler, P., (1977), Sur une methode graphique de recherche des contraintes principales egalcment utilisable en tectonique et en seismologie: la methode des diedres droits. Bull. Soc. Geol. Fr., 7(19): 1309-1318.
  • Angelier, J., (1979), Determination of the mean principal direction of stresses for a given fault population, Tectonophysics 56, T17–T26.
  • Angelier, J., Lyberis, N., Le Pichon, X., Barrier, E., and Huchon, P., (1982), The tectonic development of the Hellenic arc and the Sea of Crete: A synthesis: Tectonophysics,v. 86, p. 159–196.
  • Angelier, J., (1991), Inversion directe et recherche 4-D: comparaison physique et mathernatique de deux methodes de determination des tenseurs des paleocontraintes en tectonique de failles. C.R. Acad Sci., Paris, 312(11): 1213-1218.
  • Beekman, P.H. (1966), Hasan Dağı–Melendiz Dağı bolgesinde Pliosen ve Kuvaterner volkanizma faaliyetleri [Pliocene and Quaternary volcanism in Hasan Dağı-Melendiz Dağı region]. MTA Bulletin, 66, 88–103 [in Turkish with English abstract].
  • Bott, M. H. P., (1959), The mechanism of oblique-slip faulting. Geological Magazine, 96, 109-117.
  • Bozkurt, E. (2001), Neotectonics of Turkey—A synthesis, Geodin. Acta, 14, 3–30, doi:10.1016/S0985-3111(01)01066-X.
  • Carey-Gailhardis, E. and Mercier, J. L. (1987), A numerical method for determining the state of stress using focal mechanisms of earthquake populations. Earth planet. Sci. Lett. 82, 165-179.
  • Çemen, İ., Goncuoğlu, M.C. and Dirik, K. (1999), Structural evolution of the Tuz Golu basin in Central Anatolia, Turkey. The Journal of Geology, 107, 693–706.
  • Delvaux, D., 1993. The TENSOR program for reconstruction: examples from the East African and the Baikal rift zones.Terra Abstracts. Abstract Supplement, 1 to Terra Nova, 5: 216.
  • Delvaux D., Moeys, R., Stapel, G. et al. (1997), Paleostress reconstruction and geodynamics of the Baikal region, Central Asia, Part 2, Cenozoic rifting. Tectonophysics, 282, 1-38.
  • Delvaux, D. and Sperner, B. (2003), Stress tensor inversion from fault kinematic indicators and focal mechanism data: the TENSOR program. In: Nieuwland, D. (Ed.), New Insights into Structural Interpretation and Modelling: Geol. Soc. Lond. Spec. Publ., vol. 212, pp. 75–100.
  • Dreger, D. S., and Helmberger, D. V. (1993), Determination of Source Parameters at Regional Distances with Single Station or Sparse Network Data, J.Geophys. Res. 98, 8107-8125.
  • Dreger, D. and Romanowicz, B. (1994), Source Characteristics of Events in the San Francisco Bay Region, USGS Open-file report, 94-176, 301-309.
  • Dreger, D. S., (2003), TDMT_INV: Time domain seismic moment tensor INVersion. International Handbook of Earthquake and Engineering Seismology, ed. W. K. Lee, Boston: Academic Press 81B, 1,627.
  • Gephart, J. W. and Forsyth, D. W. (1984), An improved method for determining the regional stress tensor using earthquake focal mechanism data: Application to the San Fernando earthquake sequence, J. Geophys. Res. 89, 9,305-9,320.
  • Görür, N., Okay, F.Y., Seymen, İ. and Şengör, A.M.C. (1984), Palaeotectonic evolution of the Tuzgolu Basin complex, central Turkey: sedimentary record of a Neo-Tethyan closure. In: Dixon, J.E. and Robertson, A.H.F. (eds), The Geological Evolution of the Eastern Mediterranean. Geological Society of London, Special Publications, 17, 467–482.
  • Güven, İ. T., (1999), Yapay Sismogram Hesaplama Yöntemi ile Ankara ve Civarının Yerkabuğu Yapısının Modellenmesi, Master Thesis (in Turkish, unpublished).
  • Heidbach, O., Tingay, M., Barth, A., Reinecker, J., Kurfess, D., and Miller, B., (2010), Global crustal stress pattern based on the World Stress Map database release 2008, Tectonophysics, 482, 3-15.
  • Herrmann, R. B. and Wang, C. Y. (1985), A comparison of synthetic seismograms, Bull. Seism. Soc. Am. 75, 41-56.
  • Irmak,T.S. (2000). The source-rupture processes of recent large Turkey earthquakes. Individual studies by participants to the International Institute of Seismology and Earthquake Engineering, 36, 131-143.
  • Irmak, T. S. (2013). Focal mechanisms of small-moderate earthquakes in Denizli Graben (SW Turkey). Earth, Planets and Space, 65(9), 943-955.
  • Jackson, J., and McKenzie, D. (1984) Active tectonics of the Alpine-Himalayan belt between Turkey and Pakistan,Geophys. J. Royal Astronom. Soc. Vol. 77, pp. 185-264.
  • Jost, M. L., and Herrmann, R. (1989), A student's guide to and review of moment tensors, Seismological Research Letters, 60, 37-57.
  • Kalafat, D., Kekovalı, K., Deniz, P., Güneş, Y., Pınar, A., and Horasan, A., (2008), 31 Temmuz 2005-1 Ağustos 2005 ve 20-27 Aralık 2007 Afşar-Bala (Ankara) Deprem Dizisi (July 31, 2005 - August 1, 2005 and December 20-27, 2007 Afşar-Bala (Ankara) Earthquake Sequence, İstanbul Yerbilimleri Dergisi, 21(2), 47-60 [in Turkish with English abstract].
  • Kalafat, D., Kekovalı, K., Güneş, Y., Yılmazer, M., Kara, M., Deniz, P., and Berberoğlu, M. (2009), Türkiye ve çevresi faylanma-kaynak parametreleri (mt) kataloğu (1938-2008) A Catalogue of Source Parameters of Moderate and Strong Earthquakes for Turkey and its Surrrounding Area (1938-2008), Kandilli Observatory and earthquake Research Institute report.
  • Koçyiğit, A. and Beyhan, A. (1998), A new intracontinental transcurrent structure: the Central Anatolian Fault Zone, Turkey. Tectonophysics, 284, 317– 336.
  • Koçyiğit, A. and Deveci, Ş. (2008), Ankara orogenic phase, its age and transition from thrusting-dominated palaeotectonic period to the strike-slip neotectonic period, Ankara (Turkey). Turkish Journal of Earth Sciences, 17, 433–459.
  • Koçyiğit, A. (2009), Ankara’nın depremselliği ve 2005–2007 Afşar (Bala-Ankara) depremlerinin kaynağı [Seismicity of Ankara and source of 2005–2007 Afşar (Bala- Ankara) earthquakes]. Harita Dergisi, 141, 1–12 [in Turkish with English abstract].
  • Korhan, U.S., Özel, N.M., and Necmioğlu, Ö., (2011), Detection and Identification of Low-magnitude Seismic Events near Bala, Central Turkey, Using Array-based Waveform Correlation, Seism.Res.Lett. 82(1), 97-103.
  • Langston, C.A., (1981), Source inversion of seismic waveforms: the Koyna, India, earthquakes of September 13, 1967. Bull. Seis. Soc. Am., 71:1-24.
  • McClusky, S. et al. (2000), GPS constraints on plate kinematics and dynamics in the eastern Mediterranean and Caucasus, J. Geophys. Res., vol. 105, pp. 5695–5719.
  • McKenzie, D. P. (1969), The relation between fault plane solutions for earthquakes and the directions of the principal stresses, Bull. Seism. Soc. Am. Vol. 59, no. 2, pp. 591-601.
  • McKenzie, D. P. (1972), Active tectonics of the Mediterranean Region, Geophys. J. Royal Astronom. Soc., 30, 109-185.
  • Michael, A. J. (1984), Determination of stress from slip data: Faults and folds, J. Geophys. Res. 89, 11,517-11,526.
  • Öztürk, S. and Bayrak, Y., (2006), 31 Temmuz 2005 Bala (Ankara) depremi, MD=4.9, artçı şok dizisinin istatistiksel olarak değerlendirilmesi ve artçı şok parametrelerinin bölgesel değişimleri, Journal of İstanbul Kültür University, 4(2), 145-155. [in Turkish]
  • Pasyanos, M. E., Dreger, D. S. and Romanowicz, B. (1996), Towards Real-Time Determination of Regional Moment Tensors, Bull. Seism. Soc. Am., 86, 1255-1269.
  • Plenefisch, T., and Bonjer K. P., (1997), The stress field in the Rhine Graben area inferred from earthquake focal mechanisms and estimation of frictional parameters. Tectonophysics, 275, 71-97.
  • Raleigh, C. B., Helay, J. H. and J.D. Bredehoeft, (1972), Faulting and crustal stress at Rangely, Colorado, in Flow and Fracture of Rocks, Geophys.Monog. Ser., vol. 16, edited by H. C. Heard et al., pp. 275-284, AGU, Washington D. C.
  • Reches, Z., (1987), Mechanical aspects of pull-apart basins and push-up swells with applications to the Dead Sea Transform, Tectonophysics, 141, 75 – 88.
  • Reilinger, R.E., McClusky., S., Oral, M.B., King, R.W. and Toksöz, M.N. (1997), Global Positioning System measurements of present-day crustal movements in the Arabia-Africa-Eurasia plate collision zone. Journal of Geophysical Research 102 (B5), 9983–9999.
  • Rivera, L., and Cisternas, A., (1990). Stress tensor and fault plane solutions for a population of earthquakes. Bull. Seismol. Soc.Am. 80 (3), 600–614.
  • Saikia, C. K., (1994), Modified frequency-wavenumber algorithm for regional seismograms using Filon’s quadrature; modeling of Lg waves in eastern North America, Geophysical Journal International, 118, 142-158.
  • Scherbaum, F., (1994), Basic Concepts in Digital Signal Processing for Seismologists: Springer-Verlag New York, Inc (Mar 5 1996).
  • Snoke, J. A., Munsey, J. W. Teague, A. G. and Bollinger, G. A. (1984), A program for focal mechanism determination by combined used of polarity and SV-P amplitude ratio data, Earthquake Notes 55, p. 15.
  • Şengör, A.M.C. and Yılmaz, Y. (1981), Tethyan evolution of Turkey: a plate tectonic approach. Tectonophysics 75, 181–241.
  • Tan, O., et al. (2010), Bala (Ankara) earthquakes: Implications for shallow crustal deformation in central Anatolian section of the Anatolian platelet (Turkey), Turk. J. Earth Sci., 19, 449–471, doi:10.3906/yer-0907-1.
Toplam 47 adet kaynakça vardır.

Ayrıntılar

Bölüm Olgu Sunumları
Yazarlar

Tahir Serkan Irmak

Yayımlanma Tarihi 22 Mayıs 2016
Yayımlandığı Sayı Yıl 2016 Cilt: 2 Sayı: 1

Kaynak Göster

APA Irmak, T. S. (2016). Present-Day Stress Field in the Bala – Ankara (Turkey) Region from Inversion of Focal Mechanisms. Eastern Anatolian Journal of Science, 2(1), 37-48.
AMA Irmak TS. Present-Day Stress Field in the Bala – Ankara (Turkey) Region from Inversion of Focal Mechanisms. Eastern Anatolian Journal of Science. Mayıs 2016;2(1):37-48.
Chicago Irmak, Tahir Serkan. “Present-Day Stress Field in the Bala – Ankara (Turkey) Region from Inversion of Focal Mechanisms”. Eastern Anatolian Journal of Science 2, sy. 1 (Mayıs 2016): 37-48.
EndNote Irmak TS (01 Mayıs 2016) Present-Day Stress Field in the Bala – Ankara (Turkey) Region from Inversion of Focal Mechanisms. Eastern Anatolian Journal of Science 2 1 37–48.
IEEE T. S. Irmak, “Present-Day Stress Field in the Bala – Ankara (Turkey) Region from Inversion of Focal Mechanisms”, Eastern Anatolian Journal of Science, c. 2, sy. 1, ss. 37–48, 2016.
ISNAD Irmak, Tahir Serkan. “Present-Day Stress Field in the Bala – Ankara (Turkey) Region from Inversion of Focal Mechanisms”. Eastern Anatolian Journal of Science 2/1 (Mayıs 2016), 37-48.
JAMA Irmak TS. Present-Day Stress Field in the Bala – Ankara (Turkey) Region from Inversion of Focal Mechanisms. Eastern Anatolian Journal of Science. 2016;2:37–48.
MLA Irmak, Tahir Serkan. “Present-Day Stress Field in the Bala – Ankara (Turkey) Region from Inversion of Focal Mechanisms”. Eastern Anatolian Journal of Science, c. 2, sy. 1, 2016, ss. 37-48.
Vancouver Irmak TS. Present-Day Stress Field in the Bala – Ankara (Turkey) Region from Inversion of Focal Mechanisms. Eastern Anatolian Journal of Science. 2016;2(1):37-48.