【作者】 付萌； 童思友； 李林伟； 王鹏飞；

【Author】 Fu Meng;Tong Siyou;Li Linwei;Wang Pengfei;Key Lab of Submarine Geosciences and Prospecting Techniques,Ministry of Education,Ocean University of China;

【机构】 中国海洋大学海底科学与探测方法教育部重点实验室；

【摘要】 高精度、高效率的正演模拟技术是研究波场特征的重要手段。基于常规交错网格的声波方程正演模拟在地震资料处理中发挥了巨大作用,但随着勘探对象复杂化、精细化,需要更小的差分网格,这会使计算效率降低。为了解决这个问题,将可变交错网格方法引入常规交错网格之中,针对低速体采用小网格,高速体采用大网格,对不同尺度大小的地质模型进行剖分,从而达到保证精度、提高计算效率的目的。模型试算结果表明,本文方法能够实现高精度、高效率的正演模拟。更多还原

【Abstract】 Forward modeling technique with high precision and high efficiency is an important tool to study the wave field characteristics.Acoustic Equation Numerical Modeling basing on conventional staggered grid has played an important role in seismic data processing.But with the increasing complexity of exploration objects Smaller grid will be need,which will lead to less efficiency.This paper introduce a variable grid based on staggered grid.This method can simulates different objects with variable to improve the calculation efficiency.As a result,the variable method is more stabilized and more accurate.更多还原