Title

G.V. GOLIKOVA (SPbU), L.A. DARAGAN­SUSHCHOVA (VSEGEI), A.A. KOVTUN, E.L. LYSKOVA, K.YU. SANNIKOV (SPbU)

Features of seismic wave field in the northern part of the Barents Sea from numerical simulation

On the basis of experimental materials on two wells in the northern part of the Barents Sea built several variants of the models in layered­homogeneous elastic media, for which performed full­wave numerical modeling of seismic wave fields excited by a point source. The analysis of simulation results allowed to estimate the influence of high­velocity layers on the nature of the seismic wave field at different epicentral distances and to identify areas for existence screening. The peculiarities of the fields transmitted and reflected waves within the range of depths below the bedding of high­velocity layers. The generation areas of the interference oscillations, and their contribution to the field of reflected waves was defined. The prediction of structure and properties of wave fields registered at land and sea observations by the method of reflected waves in the region was made.
Keywords: numerical modeling of seismic wave field, high­velocity layer, screening effect, wavelet analysis of a seismic wave field.