改进射线追踪算法的微震源反演  

MICROEARTHQUAKE SOURCE INVERSION OF AN IMPROVED RAY TRACING ALGORITHM

作　　者：宋维琪[1] 刘军[1] 陈伟[1] 

机构地区：[1]中国石油大学(华东)地球资源与信息学院,山东东营257061

出　　处：《物探与化探》2008年第3期274-278,共5页Geophysical and Geochemical Exploration

摘　　要：基于射线追踪理论,提出了一种改进的试射法路径追踪算法,可以较准确地模拟射线在层状介质中的传播,不但可计算出任意检波点能接收到的所有的反射波的旅行时及射线路径,而且具有快速、准确、适应复杂构造模型的优点。利用共扼梯度法,通过正演模型的修改迭代,研究微地震层状模型的反演算法。最后,对实际的检测资料进行反演,反演结果基本上和实际资料吻合。Based on the ray tracing theory, the authors put forward an improved trial firing path tracing algorithm, which can simulate the propagation of rays in layered media quite accurately. This algorithm can not only figure out the journey time and the ray paths of all reflection waves received by any detection point but also has the merits of rapidness, accuracy and adaptability to complex structural models. With the conjugate gradient method and through altered iteration of the forward model, the authors studied the inverse algorithm of the microearthquate layered model. Finally, inversion of practical test data was performed, and the result is basically consistent with the real data.

关 键 词：正演模拟 射线追踪 微地震资料反演 数值计算 

分 类 号：P631.4[天文地球—地质矿产勘探]