• ISSN 2097-1893
  • CN 10-1855/P
陈凌,王旭,王新,危自根,张建勇. 2022. 接收函数界面和波速成像研究进展与展望. 地球与行星物理论评,53(6):680-701. doi: 10.19975/j.dqyxx.2022-029
引用本文: 陈凌,王旭,王新,危自根,张建勇. 2022. 接收函数界面和波速成像研究进展与展望. 地球与行星物理论评,53(6):680-701. doi: 10.19975/j.dqyxx.2022-029
Chen L, Wang X, Wang X, Wei Z G, Zhang J Y. 2022. Advances and perspectives for receiver function imaging of the Earth's internal discontinuities and velocity structures. Reviews of Geophysics and Planetary Physics, 53(6): 680-701 (in Chinese). doi: 10.19975/j.dqyxx.2022-029
Citation: Chen L, Wang X, Wang X, Wei Z G, Zhang J Y. 2022. Advances and perspectives for receiver function imaging of the Earth's internal discontinuities and velocity structures. Reviews of Geophysics and Planetary Physics, 53(6): 680-701 (in Chinese). doi: 10.19975/j.dqyxx.2022-029

接收函数界面和波速成像研究进展与展望

Advances and perspectives for receiver function imaging of the Earth's internal discontinuities and velocity structures

  • 摘要: 地球内部界面结构、性质与成因研究是认识地球圈层结构与物理化学性质、探索板块构造及地球系统动力运行机制和过程的重要内容. 接收函数是针对地球内部界面研究而提出、发展并广泛应用的一种地震学方法,目前已经成为探测地壳—上地幔、岩石圈—软流圈、地幔过渡带等分层结构、物质组成、热状态及变形行为等基本问题的有效手段. 自1960年代接收函数方法提出以来,其相关研究成果涉及从理论到应用等众多方面,尤其是近20年以来计算能力与理论研究的快速推进使接收函数成像技术迈入蓬勃发展的新时期. 本文简要回顾接收函数方法的发展历程,在介绍其原理基础上,分别对接收函数的反褶积提取技术、接收函数界面结构成像和波速结构成像三个方面的方法发展与应用研究进行梳理,聚焦于近20年来的最新进展、存在的问题与可能的解决思路. 最后基于地震学发展趋势,从方法和应用两个角度探讨接收函数研究的未来发展方向.

     

    Abstract: Studying the structures, properties and origins of the Earth's internal discontinuities is an important part in the efforts to understand the physical and chemical properties of the layered Earth, as well as to explore the dynamic processes and driving mechanisms of plate tectonics and the whole Earth system. Receiver function imaging is a well-known and widely-adopted seismological method in extracting the structural information of the Earth's internal discontinuities, and has become an indispensable tool to investigate the layering in structure and composition, and the thermal states and deformation behaviors of the crust and upper mantle, lithosphere-asthenosphere, mantle transition zone, and even shallow part of the lower mantle in the deep Earth. Since the receiver function method was proposed about half a century ago, great progress has been made in both methodology and application, targeting to subsurface structures of various spatial scales and from one- to three-dimension. In particular, with more and more seismic arrays being deployed in global and regional scales, and the continuous advancement of computing power and imaging theory during the last two decades, receiver function imaging has only become more powerful to constrain the subsurface structures. In this paper, we first briefly review the development history of the receiver function method. After introducing the basic principles involved, we then outline the major progress made during the last two decades in both methodology and application of this method, including but not limited to receiver function construction and forward modeling, receiver functions analysis for complex media or detailed discontinuity structures (e.g., anisotropy, dipping structures, irregular topography, sharpness of discontinuities), ray and wave-equation based receiver function migration in imaging crustal and upper mantle discontinuities, velocity inversion of receiver functions as well as its combination with other types of data. We focus mainly on the following three aspects: deconvolution techniques to construct receiver functions, imaging of discontinuity structures and inversion of velocity structures using receiver functions, with specific emphasis on the recent advances, challenges, and possible solutions. In the light of the emerging and future trends in seismology, we finally discuss the directions of receiver function studies from the viewpoints of both methodology and application.

     

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