地震波散射研究的若干重要进展

本文从地球介质的复杂性与非均匀性的普遍性以及地震波在其中的传播过程的复杂性出发，对地震波散射理论及方法研究的历史进行了简要的回顾，并对该领域从20世纪90年代以来的某些进展作了简要的介绍与评述.本文分两大部分进行阐述.(1)．历史回顾：简介并回顾了地震波散射理论几十年的发展历程、存在的问题及对解决这些问题的潜在的基本途径.(2)．20世纪90年代以来的若干进展：简要介绍了弱散射理论体系的形成及强散射问题研究的部分成果，提出了散射理论未来发展的可能方向之一，即在无近似的拟微局部分析理论的基础上，建立并发展可处理高度复杂的地球固体介质中地震波传播问题的地震波散射及全波理论.

Some important progress in research upon seismic wave scattering

Starting from discussing the complexity of the earth media and universality of heterogeneity,as well as the complication of seismic waves propagating in the media,this paper provides a brief historical retrospect on theory of seismic wave scattering and its methodological research,and briefly introduces and comments on some progress in this field since 1990s.This paper is divided into two parts:(1).Historical review.This part introduces research upon seismic wave scattering theory in the last decades,problems still existing and potentially fundamental ways for problems solving;(2).Important progress in this field since 1990s.This part briefly introduces forming of the theoretical system of weak scattering and some results of research upon problems on strong scattering.It expresses one of a probable development directions of the scattering theory in the future,namely on the basis of quasi-microlocal analysis theory without approximating,establishing and developing seismic wave scattering and full-wave theory,which can deal with the problem of seismic wave propagating in solid earth of high complexity.