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Title: AN ESTIMATION OF THE EFFECTIVE ATTENUATION FOR P WAVES APPLIED TO THE CENTRAL PART OF THE EAST EUROPEAN CRATON BASED ON THE QUARRY BLASTS DATA
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AN ESTIMATION OF THE EFFECTIVE ATTENUATION FOR P WAVES APPLIED TO THE CENTRAL PART OF THE EAST EUROPEAN CRATON BASED ON THE QUARRY BLASTS DATA
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1314-2704
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English
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18
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1.1
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The central part of the East European craton (EEC) is the site of extensive mining activity. The small aperture array ?Mikhnevo? (MHVAR) monitors the weak seismic events in the distance range about 500 km. The most of them are identified as industrial explosions using the S/P amplitude ratio, day-time distribution criteria, spectral content, recurrence and clustering of events. The detailed analysis of waveform variations allows monitoring of the change in the position of the explosion as well as the subtle changes in the technology of the blasting. Basing on array data and regular seismic measurements in the vicinity of quarries we estimate the effective attenuation for P waves. Experimental calibration curves for industrial explosions show strong variations with azimuth. The observed ground velocity is equivalent to the intensity I=1.5-2 near the quarries with the energy of explosions of the order 5·108 J/year, and to the intensity of I=3, if the energy is of the order 5·1010 J/year. Presumable maximum impact of the industrial explosions is estimated in case of simultaneous activity on all the sites. The central part of the EEC is vulnerable to seismic effects from minor quarry blasts similar to the area near big mining sites.
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conference
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18th International Multidisciplinary Scientific GeoConference SGEM 2018
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18th International Multidisciplinary Scientific GeoConference SGEM 2018, 02-08 July, 2018
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Proceedings Paper
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STEF92 Technology
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International Multidisciplinary Scientific GeoConference-SGEM
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Bulgarian Acad Sci; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci & Arts; Slovak Acad Sci; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; World Acad Sci; European Acad Sci, Arts & Letters; Ac
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675-682
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02-08 July, 2018
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website
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cdrom
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85
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attenuation; explosions; small-aperture array; seismic impact; East European craton
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