Open AccessSeismo-acoustic signal extraction from shallow sea seabed seimic wave field based on F-K method
Author(s) -
Kun Tang,
GuangLi Cheng,
Bao Liu
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2246/1/012023
Subject(s) - seabed , geology , waves and shallow water , acoustics , shallow sea , seismology , signal (programming language) , field (mathematics) , coupling (piping) , boundary element method , finite element method , geophysics , oceanography , physics , engineering , computer science , mathematics , pure mathematics , programming language , mechanical engineering , thermodynamics
Aiming at the numerical simulation of shallow sea seismic wave field, the finite element theory is used to establish the sea water and seabed models respectively, and then the boundary conditions of the sea water and the seabed fluid-solid coupling are constructed according to the fluid-solid coupling theory. This method can be used to quickly predict the shallow sea seismic wave field, based on this method, the vertical displacement of seabed seismic wavefield is carried out. On this basis, adopt F-K(frequency-wavenumber) method, one kind of two-dimesional Fourier transforn, to analyze wave components. Lastly, according to the principle of apparent velocity filtering, the seismo-acoustic signal (Scholte wave) in shallow sea seismic wave field is extracted.