Modeling Seismograms With Pseudospectral Method Modeling Seismograms With Pseudospectral Method

Numerical modeling of seismic waves is always a fundamental problem in both seismology and geodynamics. The precision and accuracy of modeling are necessary for many aspects of geophysics, such as structure reversions, seismic source reversions and so on. We discuss Pseudospectral method in 2-D polar coordinates, make some adjustments and changes, compare numerical results with seismic data, and they fit well. We think precision and efficiency of this method are good, and will contribute to our later researches. Seismic wave modeling is to calculate the initiation, propagation of seismic waves in the earth interior with numerical methods 。Of all numerical methods, Pseudospectral method finds a balance between precision and efficiency, and our results indicate that it is useful and successful. Meanwhile, there are some deficiencies in this method, such as irregular free surface boundary condition, paralle