1887

Abstract

Summary

Geometrical spreading factor and anelastic attenuation coefficient have been defined for an area of Turkey bounded by coordinates 31° E –35° E and 38.5° N – 41° N. By this way, a new reliable relation estimating typical local magnitudes for earthquakes within this area has been defined. The data used are coming from a local temporary network consisted of six broad-band stations which operated for the period 2007 – 2010. The records of the network have been converted to synthetic Wood-Anderson seismograms and maximum amplitudes of the two horizontal components have been used. The result showed that the seismic wave attenuation is, basically, due to geometrical spreading (n = 1.455) while anelastic attenuation is rather negligible (K = 1.178×10–5). The new local magnitude scale defined here is valid for the study area and holds for hypocentral distances from 8 km up to 200 km, while it can be also used – with caution – for hypocentral distances up to 250 km. The performed evaluation procedure proved the reliability and robustness of the final relation.

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2017-11-05
2020-07-11
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References

  1. Bakun, W.H. and Joyner, W.B.
    [1984] The ML scale in central California. Bulletin of the Seismological Society of America, 74, 1827–1843.
    [Google Scholar]
  2. Baumbach, M., Bindi, D., Grosser, H., Milkereit, C., Parolai, S., Wang, R., Karakisa, S., Zünbül, S. and Zschau, J.
    [2003] Calibration of an ML Scale in Northwestern Turkey from 1999 Izmit Aftershocks. Bulletin of the Seismological Society of America, 93(5), 2289–2295.
    [Google Scholar]
  3. Bindi, D., Parolai, S., Görgün, E., Grosser, H., Milkereit, C., Bohnhoff, M. and Durukal, E.
    [2007] ML Scale in Northwestern Turkey from 1999 Izmit Aftershocks: Updates. Bulletin of the Seismological Society of America, 97(1B), 331–338.
    [Google Scholar]
  4. Castellaro, S., Mulargia, F. and Kagan, Y.Y.
    [2006] Regression problems for magnitudes, Geophysical Journal International, 165, 913–930.
    [Google Scholar]
  5. ErgünM., Oral, E.Z., Çifçi, G.
    [1995] Eastern Mediterranean structure and its place in plate tectonics. Jeofizik, 9-10, 71–78 (article in Turkish with an abstract in English).
    [Google Scholar]
  6. Fletcher, R.
    [1970] A new approach to variable metric algorithms. Computer Journal, 13, 317–322.
    [Google Scholar]
  7. Gardner, J.K. and Knopoff, L.
    [1974] Is the sequence of earthquakes in Southern California, with aftershocks removed, Poissonian?, Bulletin of the Seismological Society of America, 64(5), 1363–1367.
    [Google Scholar]
  8. Görgün, E., Çomoğlu, M., Küsmezer, A., Kekovalı, K. and Kalafat, D.
    [2010] Local and duration magnitudes in Western Anatolia, Abstract S21C-2054 presented at 2010 Fall Meeting, AGU, San Francisco, Calif., 13–17Dec.
    [Google Scholar]
  9. James, F.
    [1998] MINUIT: Function minimization and error analysis, Reference Manual Ver. 94.1, CERN Geneva, Switzerland.
    [Google Scholar]
  10. Kılıç, T., Ottemöller, L., Havskov, J., Yanık, K., Kılıçarslan, F., Alver, F. and Özyazıcıoğlu, M.
    [2017] Local magnitude scale for earthquakes in Turkey. Journal of Seismology, 21(1), 35–46.
    [Google Scholar]
  11. KOERI, Bogazici University Kandilli Observatory and Earthquake Research Institute, National Earthquake Monitoring Center website
    KOERI, Bogazici University Kandilli Observatory and Earthquake Research Institute, National Earthquake Monitoring Center website, http://www.koeri.boun.edu.tr/sismo. (Last accessed, 02.04.2017)
  12. Madansky, A.
    [1959] The fitting of straight lines when both variables are subject to error, Journal of the American Statistical Association, 54, 173–205.
    [Google Scholar]
  13. McClusky, S., Balassanian, S., Barka, A., Demir, C., Ergintav, S., Georgiev, I., Gurkan, O., Hamburger, M., Hurst, K., Kahle, H., Kastens, K., Kekelidze, G., King, R., Kotzev, V., Lenk, O., Mahmoud, S., Mishin, A., Nadariya, M., Ouzounis, A., Paradissis, D., Peter, Y., Prilepin, M., Reilinger, R., Sanli, I., Seeger, H., Tealeb, A., Toksöz, M.N., Veis, G.
    [2000] Global Positioning System constraints on plate kinematics and dynamics in the eastern Mediterranean and Caucasus. Journal of Geophysical Research, 105, 5695–5719.
    [Google Scholar]
  14. McKenzie, D.
    [1972] Active tectonics of the Mediterranean region. Geophysical Journal of the Royal Astronomical Socciety, 30, 190–185.
    [Google Scholar]
  15. Nelder, J.A. and Mead, R.
    [1965] A simplex method for function minimization. Computer Journal, 7, 308–313.
    [Google Scholar]
  16. Richter, C.F.
    [1935] An Instrumental Earthquake Magnitude Scale. Bulletin of the Seismological Society of America, 25, 1–32.
    [Google Scholar]
  17. [1958] Elementary Seismology. W.H. Freeman and Co., San Francisco, California.
    [Google Scholar]
  18. Seyitoğlu, G., Kaypak, B., Işık, V., Esat, K. and Çıvgın, B.
    [2009] Earthquake Monitoring Network of Ankara (AnkNET). International Earthquake Symposium Kocaeli 2009, Abstracts, p. 102.
    [Google Scholar]
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