【摘要】 地震正演模拟技术是研究地震波在复杂介质中传播规律的有效途经,尤其在地质构造及其复杂的中国西部地区,其意义更是重大。本文介绍了两种新的正演模拟技术:有限元有限差分方法(FE-FDM)和任意精细积分方法(ADPI),并结合实例分析来验证FE-FDM和ADPI算法的实际效果,结果证明这两种方法能够有效地适用于复杂介质下的地震波传播性质的研究。更多还原

【Abstract】 Seismic modeling is a useful tool for studying the propagation of seismic waves within complex structures.However,traditional methods of seismic simulation cannot meet the needs for studying seismic wavefields in the complex geological structures found in seismic exploration of the mountainous area in Northwestern China.More powerful techniques of seismic modeling are demanded for this purpose.In this paper,two methods of finite element-finite difference method(FE-FDM)and arbitrary difference precise integration (ADPI)for seismic forward modeling have been developed and implemented to understand the behavior of seismic waves in complex geological subsurface structures and reservoirs. Two case studies show that the FE-FDM and ADPI techniques are well suited to modeling seismic wave propagation in complex geology.更多还原