Hamdullah LİVAOĞLU, Evrim YAVUZ, Fadime SERTÇELİK, Tahir Serkan IRMAK, İbrahim SERTÇELİK, Cengiz KURTULUŞ

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

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 0.2th 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.

Keywords:

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

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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.

Yayın Aralığı: Yılda 2 Sayı
Başlangıç: 2015
Yayıncı: Emrah DOĞAN

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