Vol. 13, no.3, 2021


The exploration of wave processes in the Arctics geological layers in the presence of the ice field

Polina V. Stognii

Educational Scientific and Experimental Center of Moscow Institute of Physics and Technology, https://kmipt.ru/
Dolgoprudny 141701, Moscow region, Russian Federation
E-mail: stognii@phystech.edu
Igor B. Petrov, Nikolay I. Khokhlov
Scientific Research Institute of System Analysis, Russian Academy of Sciences, https://www.niisi.ru/
Moscow 117218, Russian Federation
E-mail: petrov@mipt.ru, k_h@inbox.ru

Received June 15.2021, peer-reviewed June 21.2021, accepted June 28.2021

Abstract: The Arctic shelf zone is a very important region in our country due to the huge amounts of hydrocarbons, located there. The exploration of this region is difficult because of the presence of lots of various ice constructions, in particular, ice fields. While carrying out the seismic prospecting works, the reflected waves from the ice field contribute much to the seismograms. It sufficiently complicates the process of further interpretation of the seismograms. Only a few works are devoted to modelling the seismic waves spread through the geological layers of the Arctics in the presence of an ice field as this theme is rather new and needs deeper investigation. In this work we present the results of the investigation of the seismic waves spread in models with an ice field for the 3D case using the grid-characteristic method. The modelling results (wave fields of the velocity distribution and seismograms) allow to identify the reflected waves from the ice field from other waves. In addition, we carried out the comparative analysis of the wave fields and seismograms for the 2D model with an ice field on the surface of the calculated area for the problem description from the work of other authors. The results demonstrate a good qualitative coincidence under different approaches to the solution of the problem.

Keywords: seismic prospecting, numerical modelling, grid-characteristic method, ice field

UDC 519.63

RENSIT, 2021, 13(3):383-388 DOI: 10.17725/rensit.2021.13.383.

Full-text electronic version of this article - web site http://en.rensit.ru/vypuski/article/399/13(3)383-388e.pdf