摘要
地震全波形反演(Full Waveform Inversion)利用地震波场的运动学和动力学信息建立地层速度模型,能够精确刻画模型细节,成为近年来的研究热点.本文对日渐成熟的时间域全波形反演方法的研究进行了综述,着重评述了地震波场模拟方法、震源子波的处理方式、目标泛函的建立方式、优化反演方法、梯度预处理方式等关键环节的进展,指出了全波形反演方法向分频分尺度、全局搜索与局部搜索联合的优化反演、时间域正演和频率域反演的混合域反演等多种技术有机联合的方向发展.
The seismic full waveform inversion is a method that uses the information of the kinematics and dynamics of seismic waves to reconstruct the stratum structure and has the potential to precisely characterize the details of the velocity models.It has recently become a hot spot in the seismic inversion theory and practical application.This paper briefly elaborates the course of development of the increasingly mature time-domain full waveform inversion,and then makes a detailed introduction from five key aspects：the simulation methods of seismic wave field,the methods for processing seismic wavelet, the establishment of objective function,the inversion strategy,and the gradient preprocessing. Moreover, the development direction of the present time-domain full waveform inversion method is pointed out,which is the effective combination of the multiscale method,the hybrid optimization method,the hybrid domain method,and many other effective strategies.
出处
《地球物理学进展》
CSCD
北大核心
2015年第6期2797-2806,共10页
Progress in Geophysics
基金
国家自然科学基金项目(41230318
41074077)
高等学校博士学科点专项科研基金资助课题(20130132110023)联合资助
关键词
全波形反演
时间域
地震波场模拟
梯度预处理
反演策略
full waveform inversion
time domain
simulation method of seismic wave field
gradient preprocessing
inversion strategy
