【摘要】 文中对地震体波走时层析成像技术近30年的发展进行回顾和评述,并对该方法所存在的问题进行了分析和探讨以及给出应对策略。在壳幔速度结构的横向不均匀性、强震发生的深部构造环境、活火山区的深部结构和起源,以及造山带、板块碰撞带区域深部结构等4个方面对应用地震层析成像技术所取得的主要成果做了分类总结和探讨。研究证明,利用地震层析成像技术所获得的高分辨率地球内部结构为探索岩石圈的演化和板块运动规律及地震、火山活动发生的深部构造环境等提供了十分重要的科学依据。更多还原

【Abstract】 In this article,we review the development of seismic tomography theory in the past 30 years. We analyze the existing problems of this method and propose some ways to resolve them. Then we summarize and discuss the research results in China obtained by using seismic tomography in the following topics:structure heterogeneity of the crust and mantle; deep structural environment affecting the generation of large earthquakes; deep structure and origin of active volcanoes; seismic structure of the orogenic belts and the plate-collision zones. The studies so far indicate that high-resolution images of the Earth’s interior structure obtained by using seismic tomography have provided crucial scientific foundation for improving our understanding of the evolution of lithosphere,plate motion and interactions,as well as deep structural environment that controls the generation of large earthquake and the formation of active volcanoes.更多还原