各向异性弹性介质方向行波波场分离正演数值模拟

为了进一步提高对弹性波波场传播规律的认识，将波印廷矢量应用于多波多分量各向异性介质弹 性波波动方程方向行波波场分离正演数值模拟中。 根据弹性波波印廷矢量的波场数值特征，在多分量弹 性波正演数值模拟过程中，实现了上行波、下行波、左行波和右行波的方向行波波场分离。 以均匀各向异 性弹性介质模型、倾斜界面模型和 Marmousi 模型为例，开展了相应的方向行波波场分离数值模拟实验。 结果表明，这种方法计算量小，算法简单，能够准确实现波场快照和数值模拟记录的方向行波波场分离。 因此，在多波多分量弹性波资料的地震波场模拟分析和成像方面具有一定的应用价值。

Wave field separating numerical simulation of anisotropic elastic medium directional one-way wave

In order to further improve the knowledge of elastic wave propagation law, this paper firstly applied the Poynting vector to the up-down-left-right way wave field separation numerical simulation of multi-wave and multi- component anisotropic medium elastic wave equation. According to the Poynting vector wave field numerical characteristic, the seismic one way wave field was automatically recognized and separated during the elastic wave numerical simulation. Taking isotropic anisotropic elastic medium model, tilt layer model and Marmousi model as examples, we carried out the corresponding numerical simulation. The result shows that the presented method can be used to obtain correct and effective computational results, it can achieve the up-down-left-right way wave field separation in both the snapshots and the numerical records, and the computational method is simple and easy to accomplish with small computational cost. Therefore, it has important application value in practical data processing and interpretation of multi-wave and multi-component elastic wave.