The dissertation firstly reviews the Rayleigh wave exploration, seismic wave simulation and FCT finite difference method of the status quo;
本文首先回顾了瑞雷波勘探、地震波有限差分模拟和FCT方法的研究现状；
Using step surface data for wave equation simulation of seismic data can produce serious interference at corner points of steps and further affect the results of numeric simulation.
利用阶梯状地表数据对地震记录进行波动方程模拟时，在阶梯的角点处会产生严重的干扰，进而影响数值模拟结果。
Seismic numerical simulation in different conditions was done by solving wave equation and changing the surface border conditions.
通过改变模型表面边界条件，求解波动方程实现多情景地震数值模拟。
A simple method for wavelet simulation was presented. Shape and spectrum of the wave simulation are very similar to the known far -field wavelet. It can meet the need of Marine seismic exploration.
提出一种简单的子波模拟方法，由此得到子波的形态和频谱与已知远场子波相似，可以满足海上地震勘探的要求。
Numerical simulation of seismic wave, which has an important role for researching the propagation of seismic wave in media, is the basis of seismic exploration.
地震波数值模拟是地震勘探的基本内容，对于认识和研究地震波在介质中的传播具有重要的作用。
In this paper, seismic wave propagation in viscoelastic isotropic media is mainly addressed by the technology of wave field numerical simulation.
本文主要是通过波场数值正演模拟技术来研究粘弹性各向同性介质中地震波的传播问题。
While performing the seismic modelling experiment, it needs to have tens to hundreds of kilohertz and well-distributed orientation-dependent narrow pulse acoustic wave as simulation source.
在地震模型实验中，需要获得几十至几百千赫的、方向性较均匀的窄脉冲声波作为模拟震源。
Wave equations numerical simulation is actually calculate the solution of seismic waves 'equations which contains all information of seismic waves 'propagation under different medium situation.
波动方程数值模拟实质上是根据地下介质条件求解地震波波动方程，模拟的地震波场包含地震波传播的各种信息。
Numerical simulation of pure mass and dynamic specimens was carried out with step signal input and seismic wave input, respectively. Results validate the effectiveness of this method.
对纯质量和动力试件分别进行了阶跃输入和地震波加载试验仿真，结果验证了这种方法的优越性。
To get the better result of seismic wave propagation, the artificial boundary reflections, stability, numerical dispersion and other problems must be considered in the numerical simulation.
为了得到更好的模拟效果，在模拟的过程中，必须考虑人为边界反射以及稳定性、频散等问题。
How to effectively increase both accuracy and calculation efficiency of 3d seismic-wave forward numerical simulation is an important problem in geophysical prospect.
如何有效提高三维地震波正演数值模拟精度和计算效率一直是勘探地球物理学研究的重要问题。
How to effectively increase both accuracy and calculation efficiency of 3d seismic-wave forward numerical simulation is an important problem in geophysical prospect.
如何有效提高三维地震波正演数值模拟精度和计算效率一直是勘探地球物理学研究的重要问题。
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