Яндекс.Метрика

A.Yu. Kutishcheva, M.I. Epov

Издание: IEEE 3rd International Conference on Problems of Informatics, Electronics and Radio Engineering (PIERE) (Novosibirsk, 15-17 november 2024)
Место издания: Novosibirsk , Год издания: 2024
Страницы: 980-983

Аннотация

An important stage in the interpretation of seismic data is numerical modelling and analysis of elastic wave propagation in the geological medium. Research in this area is focused on the study of seismic fields caused by both geometrically complex reservoir structure and zones of an anomalous stress concentration generated by tectonic and geodynamic processes. In this paper, the small amplitude wave propagation in an elastic medium with prestressed sections is investigated based on the finite element method solution of a system of second order differential equations with respect to velocities. A fragment of a layered geological medium with non-zero initial stresses in a separate layer is considered as a model. Data recorded in receivers located on the ground show the presence of reflected waves from the boundaries of layers with anomalous stresses. The amplitude of the reflected waves depends on the type of initial stresses (vertical or horizontal). The amplitude of the reflected waves decreases with increasing depth of the anomalous layer. It was obtained that anomalous stresses in the geological medium can significantly affect the propagation of elastic waves, which should be taken into account when interpreting seismic data.
индекс в базе ИАЦ: 016337