【摘要】 对地震波场的有限差分方程进行了详细的推导,采用改进的中心线算法对有限差分方程中的大型稀疏线性方程组进行求解,并对算法的稳定性进行了分析。通过对二维双层弹性介质中的地震波全波场的模拟,获得了清晰的地震波波场特征,包括面波及体波波场特征。更多还原

【Abstract】 The finite difference equations of the seismic wave field are derived detailedly,used improved center-line method to solve the FD equations with large-spare array,and the stability of the method is analyzed.Through the full wave field modeling in 2D elastic media with horizontal and dip interfaces,the characteristics of the full seismic wave field,including surface wave and body wave,can be modeled clearly.更多还原