节点文献
基于辛格式奇异核褶积微分算子的地震标量波场模拟
The seismic scalar wave field modeling by symplectic scheme and singular kernel convolutional differentiator
【摘要】 本文在对地震波场进行模拟时,采用辛差分格式对波动方程进行时间离散,采用奇异核褶积微分算子对波动方程进行空间离散.该方法尽管增加了一些计算量,但提高了计算精度和稳定性;相对于其他非辛算法,它是全局保结构的,并且具有较强的长时间跟踪能力.该方法为解决大尺度、长时程地震波场的高精度模拟问题提供了一种新的、有效的选择.
【Abstract】 The paper adopts both symplectic difference scheme and singular kernel convolutional differentiator for modeling of seismic scalar wave field.For this method,the computational accuracy and stability have been greatly improved with a slight increase of calculation amount. Compared with other non-symplectic numerical methods,major advantages of the method presented in this paper are the structure-preserving property and long-term simulations.These appealing characters of the algorithm would make it effective to model the large-scale and long-term seismic wave propagation.
【Key words】 Symplectic algorithm; Singular kernel convolutional differentiator; Seismic modeling;
- 【文献出处】 地球物理学报 ,Chinese Journal of Geophysics , 编辑部邮箱 ,2011年07期
- 【分类号】P315.31
- 【被引频次】23
- 【下载频次】17