Geophysical research division

Laboratory of heterogeneous-media acoustics

Laboratory of heterogeneous-media acoustics was founded in 2014 by reforming the laboratory of geophysical acoustics. The name of the laboratory was given to the newly established department, since its research trend was broader than the original subject of the laboratory of geophysical acoustics and included, e.g., marine seismic and geophysics, nonlinear processes in structurally inhomogeneous media, etc. The retained research team of the laboratory is developing experimental and theoretical methods to explore heterogeneous media using both laboratory experimental data and data of small-scale modeling in the suburban laboratory “Bezvodnoye” and other test areas as applied to engineering geophysics. Beginning with 2014, the laboratory team together with the NNSU partners develops seismoacoustic methods for solving problems of archeology. In our opinion, the following two directions are most promising:

1) development of precision acoustic methods for studying rocks and composite materials; construction and verification of theoretical models using the experimental data obtained;
2) development of methods for remote diagnostics and in-situ monitoring of natural media; search for nonstandard oscillatory-wave solutions of this problem.

At the basis of our work is the conception of the need for concurrent development of the experimental techniques under laboratory and field conditions.
The laboratory experiments focus on determining the diagnostic features, which are then used to improve the methods of remote study of natural media. Remote methods are of greatest practical interest; thus, our studies increase the information capacity of such methods of the natural environment exploration. The laboratory staff creates theoretical models and performs both laboratory and field experiments.

Shown on the photo are (from left to right): Alexander Malekhanov, Igor Didenkulov, Alexander Fokin, and Nikolay Vasilinenko in the Vorotilovo test area  during the lowering of the “VSP-24” probe in a satellite well located 200 m away from the main ultradeep (~ 5000 m) well with the hydroacoustic source placed inside.