摘要
基于正反傅立叶变换,提出了地震波模拟的混合阶褶积算法。该方法原理简单、易于实现,结合了有限差分与伪谱法的优点,具有较高的精度和计算效率,适用于地震波场的正演计算,同时还给出了二维地震波场的理论计算实例。计算结果表明,此算法模拟结果正确、精度高、速度快、能适应较为复杂地质模型,并且易于推广到各向异性介质中去。
Using forward and inverse Fourier transform, we present hybrid order convolutional differentiator algorithm for seismic wave modeling. This algorithm being easily understood and realized, has the advantages of both finite difference and pseudospectrum methods with results in high computation accuracy and efficiency, and can be applied to the forward computation of seismic wave field. The theoretical computation example of 2D seismic wave field is given and the numerical results show that the algorithm can bring reliable outcomes with high accuracy and fast speed, and be adapted to complex geological models and readily be extended to wave modeling for anisotropic media.
出处
《物探化探计算技术》
CAS
CSCD
2005年第2期111-114,共4页
Computing Techniques For Geophysical and Geochemical Exploration
基金
国家自然科学资助项目(49874029)
高等学校博士点专项基金资助项目(97018705)
教育部骨干教师资助
关键词
混合阶褶积算子
正演模拟
傅立叶变换
地震波
hybrid order convolution differentiator
forward modeling
fourier transform
seismic wave
