The nearly analytic discrete(nad)method is a kind of finite difference method with advantages of high accuracy and *** studies have investigated the nad method for simulating wave propagation in the *** study applies ...
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The nearly analytic discrete(nad)method is a kind of finite difference method with advantages of high accuracy and *** studies have investigated the nad method for simulating wave propagation in the *** study applies the nad method to solving three-dimensional(3D)acoustic wave equations in the *** forward modeling approach is then used as the“engine”for implementing 3D frequency-domain full waveform inversion(FWI).In the numerical modeling experiments,synthetic examples are first given to show the superiority of the nad method in forward modeling compared with traditional finite difference *** 3D frequency-domain FWI experiments are then carried out to examine the effectiveness of the proposed *** inversion results show that the nad method is more suitable than traditional methods,in terms of computational cost and stability,for 3D frequency-domain FWI,and represents an effective approach for inversion of subsurface model structures.
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