地震震源机制波形自动反演系统的研究现状与展望

Present State and Prospect of Automated Waveform Inversion System for Earthquake Focal Mechanism

震源机制解是地震学研究的重要组成部分,它从一定程度上描述了震源的性质及其破裂过程,对其正确、全面地认识可深化理解地震的孕育、发生和演化。而地震波形自动反演系统的建立,不仅实现了利用地震波形信息进行震源机制解的自动反演,更重要的是加快了反演的速度,充分体现了提取震源信息的实效性,从而有力地帮助震情分析、余震趋势预测、震后救援等工作的展开。本文系统地阐述了震源机制解反演方法,总结了自动反演系统构建思路以及波形自动反演系统的实现,为国内构建自动反演系统提供了可鉴的技术思路。

As an integral part of seismological research, focal mechanism plays an impor- tant role in not only interpreting earthquake preparation, but also describing the nature of seismic source and rupture process to some extent. Rapid and automatic inversion system can speed up inversion and provides more source information, which potentially increases the efficiency of rescue operations, seismic regime analysis and aftershock prediction. In this paper, we elaborate on the inversion method for focal mechanism, and also summarize the construction ideas and the current research progress of automatic inversion system. Meanwhile, such system can provide technical ideas for the construction of automatic inversion system.