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Earthquake-explosion discrimination using waveform cross-correlation technique for mines in southeast of Tehran

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Abstract

The presence of man-made explosions in a seismic catalogue leads to errors in statistical analyses of seismicity. Recently, the need to monitor man-made explosions used for mining, road excavating, and other constructional applications has been become a demanding challenge for the seismologists. In this way, we gain new insight into the cross-correlation technique and conduct this approach to discriminate explosions from seismic datasets. Following this, improved P-wave arrival times are used for more precise relocation. In this study, the waveform cross-correlation technique provides a reliable means for discriminating explosions which have cross-correlation coefficients (CC) of 0.6 or greater with their own corresponding stacked waveforms. The results illustrate that approximately 80 % of seismicity of southeast of Tehran, recorded by the Iranian Seismological Center (IRSC), includes events which have cross-correlation coefficients of ≥0.6 with their corresponding stacked waveforms. Furthermore, with improved P-wave arrival time, there is a better chance to relocate explosions precisely in the region under study.

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Acknowledgments

We are grateful to the Iranian Seismological Center, Institute of Geophysics, University of Tehran (IRSC, IGUT), and Tehran Disaster Management and Mitigation Organization (TDMMO) for providing the used data in this investigation. Additionally, a word of appreciation must be profoundly given to Dr. Farzam Yaminifard for his invaluable assistance in this study. We would like to couch our heartfelt gratitude to the anonymous reviewers for their constructive suggestions which helped further improved the manuscript.

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Authors and Affiliations

  1. Earth Physics Department, Institute of Geophysics, University of Tehran, Post Box 14155-6466, Tehran, Iran

    A. Kahbasi & A. Moradi

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  1. A. Kahbasi
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  2. A. Moradi
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Correspondence to A. Moradi.

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Kahbasi, A., Moradi, A. Earthquake-explosion discrimination using waveform cross-correlation technique for mines in southeast of Tehran. J Seismol 20, 569–578 (2016). https://doi.org/10.1007/s10950-015-9544-6

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  • DOI: https://doi.org/10.1007/s10950-015-9544-6

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