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地震 ›› 2020, Vol. 40 ›› Issue (3): 52-64.doi: 10.12196/j.issn.1000-3274.2020.03.005

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伴随成像及其在地球深部结构研究中的应用

肖卓1,2, 高原2   

  1. 1.中国地震局地球物理研究所, 北京 100081;
    2.中国地震局地震预测研究所地震预测重点实验室, 北京 100036
  • 收稿日期:2019-03-25 出版日期:2020-07-31 发布日期:2020-07-28
  • 通讯作者: 高原,研究员。E-mail:qzgyseis@163.com
  • 作者简介:肖卓(1993-),男,湖南娄底人,在读博士研究生,主要从事地震成像研究。
  • 基金资助:
    国家自然科学基金重点项目(41730212);中国地震局地震预测研究所基本科研业务专项(2017IES010202)

A Review of Adjoint Tomography and Its Application in Earth’s Interior Imaging

XIAO Zhuo1,2, GAO Yuan2   

  1. 1. Institute of Geophysics, China Earthquake Administration, Beijing 100081, China;
    2. Key Laboratory of Earthquake Prediction, Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, China
  • Received:2019-03-25 Online:2020-07-31 Published:2020-07-28

摘要: 基于高精度的三维波场模拟和伴随方法, 伴随成像成功实现了天然地震全波形成像在区域和全球尺度下的应用。伴随成像技术基于谱元法, 使用全三维、 多参数的初始模型对地震波场进行数值模拟, 通过正演波场和伴随波场的相互作用快速求取目标函数的梯度, 结合高性能计算技术, 实现大尺度全波场成像。相比于传统的地震层析成像方法, 伴随成像对地球内部结构异常体的描述更加精细和全面, 更适用于构造活跃地区的深部动力学研究。本文首先介绍伴随成像方法的基本原理, 随后阐述其具体实现流程, 并回顾该方法在地球深部结构研究中的应用, 最后对其未来发展做出展望。

关键词: 伴随成像, 波形模拟, 地球内部结构, 谱元法

Abstract: Numerical simulation techniques and adjoint method lead to the successful application of adjoint tomography in both regional and global full waveform tomography. Based on the spectral element method, adjoint tomography adopts full three-dimensional model as initial model for waveform modelling and calculates gradients efficiently through interaction between forward wavefield and adjoint wavefield. Owing to the power of high-performance computing, adjoint tomography utilizes full-wave tomography at large scale. Compared with traditional tomography techniques, adjoint tomography can describe the subsurface anomalies more detailed and comprehensively, so it is more favorable in deep dynamics research. Here we firstly introduce the basic theory of adjoint tomography, its workflow of implementation, and then we give a review of its worldwide applications, while finally a brief prospect of future developments is discussed at the end of this article.

Key words: Adjoint tomography, Waveform modeling, Earth’s interior, Spectral element method

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