Monitoring of weak deep emission sources in the presence of intense industrial noise

Previously, algorithms of emission seismic tomography have been developed and tested successfully in geophysical investigations. It was found that intense sources of man-made seismic radiation creates shielding effect and prevents monitoring of weak endogenous sources associated with the process of fluid transport and reaction of the medium to changes in the stress-strain state. The results of numerical simulation and analysis of field data show that special methods of spatial filtering allows us to take the shielding effect of and visualize weak endogenous sources. Spatial filtering methods because of its features are sensitive to the density of the observing system and its geometry. Under adverse conditions algorithms can lose efficiency. Numerical simulation shows how you can upgrade the small seismic array set on an area of the geodynamic observatory to rectify the situation. It turned out that a slight increase in the number of points of observation and correct their arrangement can completely recover performance of the filter algorithms and ensure the correct operation of the system under intensive man-made interference.