地震层析成像在华北克拉通地区的研究进展  

Progress of Seismic tomography applied in the North China Craton

作　　者：郭慧丽[1,2] 徐佩芬[1] 

机构地区：[1]中国科学院地质与地球物理研究所,北京100029 [2]中国科学院研究生院,北京100049

出　　处：《地球物理学进展》2011年第5期1557-1565,共9页Progress in Geophysics

基　　金：国家自然科学基金面上项目(40874025)资助

摘　　要：综述了地震层析成像方法在华北克拉通地区的研究成果,探讨研究中存在的问题及其研究前景.近年来很多层析成像方法在该地区获得了高分辨率的地壳、上地幔的速度结构,为研究构造运动以及深部的动力学过程提供了线索与约束.许多研究针对发震构造以及华北克拉通破坏等科学问题做了深入的探讨.地震层析成像技术仍然面临很大的挑战.比如速度间断面上的分辨率不尽如人意,各种结果之间难以直接对比研究等.层析成像或许应该注重多种方法、多种数据的联合研究,在方法、技术层面上进行改进.Seismic tomography applied in the study of seismic structures beneath the North China Craton has achieved many significant results. In this paper, the methods of seismic tomography applied in this area and their resolutions are briefly reviewed. The results and their implications are discussed in detail. In addition, problems in these researches are pointed out in this paper. High-resolution seismic images of the crust and mantle offer clues for tectonics and deep dynamic process. Many researches focus on seismotectonics and destruction of North China Craton. Seismic tomography faces great challenge however. The resolution at velocity discontinuities is not good. It is hard to do direct comparisons between tomographic results. Maybe different methods and different dataset should be jointed together. Also methods should be developed.

关 键 词：地震层析成像 华北克拉通 

分 类 号：P315[天文地球—地震学]