Discrimination of quarry blasts and earthquakes in Trabzon and its vicinity

Yıl 2011, Cilt: 15 Sayı: 1, 68 - 74, 01.06.2011

Ömer Faruk Kartal Gündüz Horasan

Öz

-

Anahtar Kelimeler

Trabzon Region, Earthquake, Quarry Blast, Linear Discriminant Function

Trabzon ve civarındaki deprem ve patlatma verilerinin birbirinden ayırt edilmesi

Öz

In this study, seismic activity in Trabzon and its vicinity is investigated and natural and artificial seismic activities are discriminated. Total of 125 digital vertical velocity seismograms of 65 seismic events with Md≤3.0 duration magnitude from earthquake catalog between 2006 to 2007 recorded by Trabzon (KTUT), Espiye (ESPY), Pazar (PZAR) broadband stations operated by Karadeniz Technical University were used in the study. The maximum S-wave and maximum P-wave amplitude ratio (S/P) of vertical velocity seismograms and power ratio (complexity, C) and spectral ratio (SR) were calculated. The earthquakes and the quarry blasts are discriminated by using the linear discriminant function on the graphics of S/P amp ratio to log S and C to Sr. At the end of this study 43 out of 65 events (66%) are determined as quarry blasts and 22 (34%) are as earthquakes.

Anahtar Kelimeler

Trabzon bölgesi, Deprem, Taş ocağı patlatması, Doğrusal ayırt etme fonksiyonu.

Kaynakça

• HORASAN, G., BOZTEPE-GÜNEY, A., KUSMEZER. A., MUSAOĞLU, N., Constamination of seismicity catalogs by quarry blast: An example from İstanbul and its vicinty, Northwestern Turkey. Journal of Asian Earth sciences 34: 90-99, doi:10.1016/j.jseaes.2008.03.012, 2009.
• WIEMER, S., And BAER, M., Mapping and removing quarry blast events from seismicity catalogs, Short Notes, Bull. S
• BAUMGARDT, D.R., YOUNG, G.B., Regional seismic waveform discriminants and case-based event identification using regional arrays. Bulletin Seismological Society of America Part B 80, 1874–1892, 1990.
• eism. Soc. Am 90, 2: 525-530, 2000.
• GITTERMAN, Y. and SHAPIRA, A., Spectral discrimination of underwater explosions, Isr. J. Earth Sci., 42, 37-44, 1993.
• ÖGÜTÇÜ, Z., HORASAN, G., KALAFAT, D., Investigation of micro seismic activity sources in Konya and its vicinity, Central Turkey, Natural Hazard, (in Press), 2011.
• KAYA,R., KESİMAL, A., YILMAZ, E., ERÇIKDI, B., Karadeniz sahil yolu projesi kapsamında Trabzonda işletilen taş ocaklarında yapılan patlatmaların çevresel açıdan incelenmesi, 2003.
• WESSEL, P., and SMITH, W.H.F., New version of the generic mapping tools (GMT) Version 3.0 released, Trans., AGU, EOS, 76, 329, 1995.
• SPSS V.17.0 SPSS for Windows. SPSS Inc. (Statistical Package for the Social Sciences). 2005.
• WÜSTER, J., Discrimination of chemical explosions and earthquakes in central Europe-a case study, Bull. Seismol. Soc. Am. 83, 1184-1212, 1993.
• SCHERBAUM, F. And JOHNSON, J., 1992, Programmable Interactive Toolbox for Seismological Analysis (PITSA). In: Lee, W.H.K. (eds), IASPEI Software Library, USA. V 5, 269 pp., 1992. [11]
• KÜSMEZER, A., BEKLER, F., ÖĞÜTÇÜ, Z., İstanbul ve civarındaki deprem ve patlatma verilerinin birbirinden ayırt edilmesi ve kataloglanması, Proje Sonuç Raporu, Projece No: 05T202 , Boğaziçi Üniversitesi Araştırma Fonu, s 79, 2006. BOZTEPE-GÜNEY, A.,