频域地震波场的数值模拟

Numerical simulation of seismic wave in frequency domain

讨论在频域上地震波场的数值模拟.采用傅里叶变换把地震波场的数值模拟问题转化为Helmholtz方程边值的求解问题,再采用Nystrom法求解,使数值模拟具有较高精度.同时采用吸收边界使得数值模拟效果更好.

Numerical simulation of seismic wave in frequency domain is discussed.The seismic wave equation problem is transformed into the boundary problems of Helmholtz equation by the Fourier transformation.The equation is solved more efficiently by using Nystrom method,and the effect of the modeling gets better by taking advantage of the absorbing boundary condition.