LOCALISATION OF SEISMIC EMISSION SOURCES IN THE DEEP FAULT ZONE ON EVIDENCE OF PASSIVE SEISMIC OBSERVATIONS

E. A. Khogoev 1, M. L. Shemyakin 2, Yu. I. Kolesnikov 1, E. E. Khogoeva 1, V. L. Khomichev 3

1 Trofimuk Institute of Petroleum Geology and Geophysics, Novosibirsk, Russia; 2 Novosibirsk State University, Novosibirsk, Russia; 3 Siberian Research Institute of Geology, Geophysics and Mineral Resources, Novosibirsk, Russia

The article deals with data processing methods and results of seismic monitoring along a profile crossing the fault in the vicinity of the Agaskyrskoye ore deposit. Data processing results obtained in the period of the greatest microseism activity by seismic emission tomography lead to the conclusion that areas of increased seismic emission are associated with zones of deep faults. Two emission zones have been localized along the profile at a distance of 0.4 km traced down to depth of 1.5 km. The analysis of stacked trace spectra obtained in calculating a similarity measure made it possible to determine dominant emission frequencies depending on source depths.

Keywords: microseism, seismic emission tomography, tectonic fault.

DOI 10.20403/2078-0575-2017-3-67-76

Download PDF