声格固体模型地震波场模拟

ＰｅｔｅｒＭｏｒａ为模拟复杂介质中的纵波，提出了声格固体模型，即在格子Ｂｏｌｔｚｍａｎ模型基础上引入变速粒子而建立的细胞自动机模型，从而为利用这种方法模拟地震波场奠定了理论基础。文中简要介绍了Ｐｅｔｅｒ Ｍｏｒａ的声格固体模型的基本理论框架及差分算法，同时还介绿了黄联捷的插值算法。

Seismic wave field simulation using phononic lattice solid model

In order to simulate seismic compressional wave in complicated medium,Peter Mora put forward phononic lattice solid model, namely, cellular automaton model developed by introducing velocity-variable particles on the basis of lattice Boltzman model. As a result,he offers a theory for simulating seismic wave field by the cellular automaton. Briefly described are both basic theory and difference algorithm of Peter Mora's phononic lattice solid model, and the corresponding Huang Lianjie's interpolation algorithm. The authors' contributions are the processing method for absorbing boundary and the numerical simulation result of inhomogeneous medium model. This technique allows us to simultaneously renew the states of all nodes,so it can be performed in massively parallel processor. Gradual variation and smooth processings are unnecessary in the medium where wave impedance and geological shape vary terribly. The technique is proved feasible.