Ковалевский В.В.   Glinskiy B.   Karavaev D.   Khairetdinov M.S.  

Numerical simulation and experimental study of wave fields of vibration sounding of volcanic structures

Reporter: Ковалевский В.В.

The paper presents results of numerical simulation and experimental study of wave fields of vibration sounding of mud volcanoes. For the mathematical modeling of the vibroseismic wave fields in the complex medium a parallel algorithm and software are developed for numerical simulation of 3D seismic fields on hybrid architectures. Solution of the direct geophysical problem is based on solving elasticity theory equations, written in terms of the velocity vector of displacement and stress tensor. The difference method as a method of solution adapted to the three-dimensional version is used. A parallel implementation of the algorithm and the program is done using MPI and OpenMP (parallel hybrid scheme) and its development for hybrid clusters, which include the compute nodes with GPU. For this parallel algorithm has been implemented in the language C + + using MPI and technology CUDA. Numerical modeling is used to analyze the results of experimental studies of mud volcano Mount Karabetova in Taman mud volcano province using vibroseismic sounding methods. A mathematical model of multi-layer mud volcano Karabetova mountain is developed. Comparative analysis of natural and numerical experiments allowed us to determine the structure of the mud volcano and explore the resonant wave phenomena in the central channel. Experiments and numerical simulations have become the basis for building mud volcanoes monitoring systems.