We have developed a mixed-grid finite element method (MGFEM) to simulate seismic wave
propagation in 2D structurally complex media. This method divides the physical domain into …

三角网格有限元法具有网格剖分的灵活性, 能有效模拟地震波在复杂介质中的传播.
但传统有限元法用于地震波场模拟时计算效率较低, 消耗较大计算资源. 本文采用改进的核矩阵 …

The mass-lumped method avoids the cost of inverting the mass matrix and simultaneously
maintains spatial accuracy by adopting additional interior integration points, known as …

波动方程的数值求解是地震波正反演的重要环节, 而数值算法的计算精度直接关系到地震波的
模拟结果和成像质量. 当前, 谱元法由于同时具备有限元法的网格灵活性与谱方法的高精度性已 …

The finite element method is a very important tool for modeling seismic wave propagation in
complex media, but it usually consumes a large amount of memory which significantly …

地下低速夹层的存在导致地震数据中包含较强能量的层间多次波, 有效识别和预测深部储层上覆
地层产生的层间多次波是提高深部储层解释精度的重要环节, 而准确模拟层间多次波是辅助识别 …

地震波形伴随成像是通过正演波场和伴随波场构建误差泛函关于模型的Fréchet 导数.
在波形伴随成像中, 需要数值求解地震波运动方程得到正演波场和伴随波场. 目前 …

We have carried out microseismic forward modelling in orthorhombic poroelastic medium.
The seismic response to isotropic (ISO) source, double couple (DC) source and …

Finite element method (FEM) with triangular mesh has the properties of flexibility and
adaptability in complex medium. However, the traditional finite element method is inefficient …

将弹性波方程变换至Hamilton 体系, 构造适用于弹性波模拟的高效显式二阶辛Runge-Kutta-
Nyström (RKN) 格式, 运用根数理论得到此格式的阶条件方程组. 通过给定系数的限定条件 …