RESONANCE PROPERTIES OF THE UPPER PART OF THE SECTION ACCORDING TO DATA OF PHYSICAL MODELING

Abstract

On the data of three-dimensional physical modeling the possibilities of determining the resonance
properties of the upper part of the section (UPS)
according to the records of microseisms are investigated. For obtaining and processing the experimental data the laboratory modification of the procedure of selection standing waves from microseismic field recorded on a dense system of observations using thin-route equipment was applied, the
procedure being developed in recent years. Experimentally several types of the section’s upper part
were studied at a reduced speed (constant power
layer, the layer above the boundary blocks, thinning layer spherical lens). It is shown that the
technique under view allows to study the distribution of frequencies and amplitudes of the individual
modes of standing waves in the area where the
measurements are being performed according to
the microseisms registered on the surface of the
upper part of the section.