Method and device for calculating the direction of propagation of an earthquake

By obtaining the wave equation of seismic spatial-temporal acoustic waves, calculating wavefield information and components, and substituting them into the expression for the propagation direction vector of the seismic wavefield, the problem of wavefront calculation instability was solved, and propagation direction analysis with higher accuracy and efficiency was achieved.

CN120294830BActive Publication Date: 2026-07-24NORTHEAST GASOLINEEUM UNIV
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Patent Information

Application Number
CN202510233762.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-02-28
Publication Date
2026-07-24
Estimated Expiration
2045-02-28

AI Technical Summary

Technical Problem

Existing techniques for analyzing the direction of seismic wave propagation are prone to instability and errors due to the presence of a zero gradient point on the wavefront in the Poynting vector application.

Method used

By obtaining the wave equation of seismic spatial-temporal acoustic waves, calculating wave field information and components, and substituting them into the pre-constructed expression for the propagation direction vector of the seismic wave field, the finite difference method and trigonometric function relationships are used to reduce trigonometric function oscillations and improve calculation accuracy.

Benefits of technology

It improves the stability and accuracy of seismic wave propagation direction calculation, reduces deviations, and enhances calculation efficiency.

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Abstract

The application discloses a method and device for calculating the propagation direction of seismic waves. The method comprises the following steps: obtaining the wave equation of the seismic space-time acoustic wave, and obtaining the wave field information according to the wave equation; calculating the wave field component according to the wave field information; and substituting the wave field component and the wave field information into the pre-constructed wave field propagation direction vector expression of the seismic wave. The technical scheme can effectively reduce the deviation in the analysis of the propagation direction of the seismic wave, and improve the calculation accuracy.
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