4.6 Article

Fast iterative method for seismic wave travel time calculation under undulating surface conditions

期刊

FRONTIERS IN ENVIRONMENTAL SCIENCE
卷 10, 期 -, 页码 -

出版社

FRONTIERS MEDIA SA
DOI: 10.3389/fenvs.2022.1028452

关键词

seismic wave travel time calculation; seismic wave numerical simulation; geophysical exploration; fast iterative method (FIM); iterative approach

资金

  1. China National Space Administration (CNSA)
  2. Natural Science Foundation of China [D020201]
  3. China Postdoctoral Science Foundation [41,804,100]
  4. [2020T130090]
  5. [2018M640910]

向作者/读者索取更多资源

Seismic wave travel time is an important seismic attribute information, and it is significant to study an efficient and high-precision travel time calculation method that can adapt to undulating surface condition. In this paper, the Fast iterative method (FIM) is modified to a topography travel time calculation method.
Seismic wave travel time is an important seismic attribute information and is widely used in various seismic forward and inversion methods, including seismic migration imaging, seismic tomography, seismic wave forward modeling and other core seismic data processing methods. The accuracy and efficiency of the travel time algorithm are important for the above methods. In the practical application of seismic exploration, it is often carried out under the condition of undulating surface, which has a significant impact on the travel time calculation. Therefore, it is of great significance to study an efficient and high-precision travel time calculation method that can adapt to undulating surface condition. In this paper, Fast iterative method (FIM) is modified to a topography travel time calculation method. The method employs an iterative method to solve the equation of function to obtain seismic wave travel time by maintaining a narrow band called the active list, and the algorithm can update all grid nodes in the active list at a time. We will verify the travel time computing power of the FIM method through several different velocity models.

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