Seismic Characterization of the Blast Occured In Istanbul (Turkey) by the end of 2016

Yıl 2018, Cilt: 4 Sayı: 1, 46 - 53, 05.07.2018

Hamdullah Livaoğlu , Evrim Yavuz Fadime Sertçelik , Tahir Serkan Irmak , İbrahim Sertçelik , Cengiz Kurtuluş

Öz

On December 10, 2016; two terror originated attacks
hit Istanbul, Besiktas at sequential time intervals of 45 seconds shaking the
buildings, damaged surrounding structures and caused loss of lives. The first
blast was hit with a bomb loaded vehicle under sail in the eastern exit of the
Vodafone Park stadium. The second attack was occurred after 45 seconds in the western
exit of the stadium. These blasts produced seismic signals which were recorded
by two broadband instruments ISK and KAVV that are operated by Kandilli
Observatory and Earthquake Research Institute Regional Earthquake-Tsunami
Monitoring Center (KOERI-RETMC). These explosions were audible up to several
kilometers including significant acoustic energy at frequencies higher than 20
Hz. The blasts were analyzed in frequency and time domain to illustrate the
attack’s frequency characteristics and its amplitudes. The first attack’s (car
loaded) record in station KAVV's N-S component shows the fundamental peak
frequency in 17 Hz at 0.2^th second, 12 Hz at station ISK
respectively depicting single massive event and energy discharge as well. For
the second attack which was a suicide bomber, the results of Short Time Fourier
Transform analysis indicate that the energy releases focused both at higher
frequencies and involving infrasound at < 20 Hz. Due to amount of bomb, the
second blast corresponds to energy discharge at low amplitudes in comparison
with the first blast. In addition to that it was detected from the energy
estimation that the explosion for the first attack is equivalent to 225.6 kg
TNT.

Anahtar Kelimeler

blasts, Istanbul, spectra, time-frequency domain analysis, Turkey

Kaynakça

• Ottemöller, L., Evers, L. G. Seismo-acoustic analysis of the Buncefield oil depot explosion in the UK, 2005 December 11. Geophysical Journal International 172.3, 1123-1134.
• Sertçelik, F., Irmak, T.S., Livaoğlu, H., Yavuz, E., Sertçelik, İ., Kurtuluş C. (2016). Spectral Analysis of Recent Ankara (Turkey) Terrorist Attacks, Annual International Conference on Geological and Earth Sciences (GEOS 2016), doi:10.5176/2251-3353_geos16.22.
• Sertçelik, F., Irmak, T.S., Livaoğlu, H., Yavuz, E., Sertçelik, İ., Kurtuluş C. (2017) Seismological Analysis of May 12, 2016 Diyarbakir (SE Turkey) Blast, International Conference on Innovative Trends in Engineering, Technology, Computer and Applied Sciences (ITETCAS), Full Proceeding vol. 2 issue. 7, ISBN: 978-602-6427-34-2.
• URL-1: http://aa.com.tr/tr/gunun-basliklari/istanbulda-teror-saldirisi/703506, Anadolu Agency, last accessed: January 2018.
• Willmore, P. L. (1947). Seismic aspects of the Heligoland explosion. Nature, 160, 350.
• Aleqabi, G. I., Wysession, M. E., Ghalib, H. A. (2015). Characterization of Seismic Sources from Military Operations in Urban Terrain (MOUT): Examples from Baghdad. Bull. Seismol. Soc. Am. 106.1, 23-41.
• Boatwright, J., Fletcher, J. B. (1984). The partition of radiated energy between P and S waves. Bull. Seismol. Soc. Am.74.2, 361-376.
• Chakraborty, A., Okaya, D. (1995). Frequency-time decomposition of seismic data using wavelet-based methods. Geophysics 60.6, 1906-1916.
• Gabor, D. (1946). Theory of communication. Part 1: The analysis of information. Journal of the Institution of Electrical Engineers - Part III: Radio and Communication Engineering, 93(26), 429-441.
• Hinzen, K. G. (2014). Seismic analysis of the accidental WWII bomb explosion in Euskirchen, Germany, on 3 January 2014. Seismol. Res. Lett. 85(4), 825-835.Qamar, A. (1995). Space shuttle and meteoroid-tracking supersonic objects in the atmosphere with seismographs, Seismol. Res. Lett. 66, 6-12.
• Kanamori, H., Mori, J., Sturtevant, B., Anderson, D. L., Heaton, T. (1992). Seismic excitation by space shuttles, Shock Waves 2, 89–96.
• Kim, W. Y., Aharonian, V., Lerner-Lam, A. L., Richards, P. G. (1997). Discrimination of earthquakes and explosions in southern Russia using regional high-frequency three-component data from the IRIS/JSP Caucasus network. Bull. Seismol. Soc. Am. 87.3, 569-588.
• Koper, K. D., Wallace, T. C., Reinke, R. E., Leverette, J. A. (2002). Empirical scaling laws for truck bomb explosions based on seismic and acoustic data, Bull. Seismol. Soc. Am. 92, 527-542, doi: 10.1785/0120000242.
• Livaoğlu, H., Irmak, T. S., 2017. An empirical relationship between seismic bedrock depth and fundamental frequency for Değirmendere (Kocaeli-Turkey). Environmental Earth Sciences, 76(20), 681.
• Murphy, M. M., Westman, E. C., Iannacchione, A., Barczak, T. M. (2012). Relationship between radiated seismic energy and explosive pressure for controlled methane and coal dust explosions in an underground mine. Tunnelling and Underground Space Technology, 28, 278-286.
• Nechtschein, S., Bard, P. Y., Gariel, J. C., Meneroud, J. P., Dervin, P., Cushing, M., Gaubert, C., Vidal, S., Duval, A. M., 1995. A topographic effect study in the Nice region. In Proc of 5th Int Conf on Seismic Zonation.