Progress in the studies of the joint inversion of surface wave dispersion and receiver functions
-
摘要: 面波频散和接收函数是研究地壳上地幔速度结构的重要方法. 面波频散对绝对S波速度较为敏感,但对界面结构约束不强;而接收函数对间断面具有很好的分辨能力. 二者优势互补,通过联合反演,可以得到更为准确的壳幔内部界面及绝对S波速度结构. 近十几年来,随着噪声地震学的迅猛发展以及大量宽频带地震仪的架设,该联合反演方法得到了更进一步的应用.为了便于梳理该研究方向的脉络,本文分别回顾了面波频散与体波接收函数的方法原理及其在壳幔结构反演中的应用,并分析了两种方法的优势与不足. 在此基础上,介绍了二者的联合反演方法,以及在地壳上地幔速度结构研究中的应用.展望了联合反演方法的进一步发展,以及加入多种地球物理观测数据对反演地壳上地幔结构的意义.Abstract: Surface wave dispersion and body wave receiver function provide essential data for modeling of crustal and uppermost mantle structure. Surface wave dispersion is sensitive to absolute shear wave velocity, but constrains interfaces weakly. Instead, receiver function can resolve sharp discontinuities effectively. Thus, joint inversion of both datasets can provide tight constraints on crustal and mantle structure. Indeed, their joint inversion has been one of the most important tools to probe crustal and uppermost mantle velocity structure. Over the past decade, with fast development of ambient noise tomography, the joint inversion method is applied more broadly. Firstly, we reviewing the inversions of surface wave dispersion and receiver functions separately. Secondly, we summarize the methods used in joint inversion of surface wave dispersion and receiver functions, and the applications to studies of crustal and uppermost mantle velocity structure with joint inversion. Lastly, we show prospect for the further development of the joint inversion method, and the significance of inverting crustal and uppermost mantle structure with more types of geophysical observation data.
-
-
计量
- 文章访问数:
- PDF下载数:
- 施引文献: 0
下载: