Technology of Supercomputer Simulation of Seismic Wave Fields in Complicated Media

Abstract

The paper considered computing technology solving problems related to the modeling of seismic wave propagation in inhomogeneous media typical of volcanic structures using supercom-puter simulations in order to create systems of vibroseis monitoring for quake-prone objects. The physico-mathematical model of the magmatic volcano is constructed and software implementation on the basis of the known numerical method that effectively using the architecture of modern su-percomputers equipped with GPU is developed. The parallel 2D and 3D algorithms and software for simulation of elastic wave propagation in a complicated medium (2D model is separation of original 3D model using various angles and planes) on basis of the explicit finite-difference scheme for the shifted grids and CFS-PML method of absorbing boundaries is developed. Scalability of algorithms is investigated. The application of the developed technology allows for much more effi-cient to carry out studies of the structure of the wave field due to the geometry of the internal boundaries and refinement of its kinematic and dynamic characteristics.