地震自动识别及震相自动拾取方法研究进展

发布时间：2018-04-18 09:10

本文选题：微震 + 地震事件自动识别　；参考：《地球物理学进展》2017年03期

【摘要】：微小地震事件的研究工作应用领域广泛,在诱发地震监测、地颤动低频地震监测、地震预警等研究中有举足轻重的地位.而微震事件的自动识别以及震相的自动拾取的研究则是后期微震数据处理工作的基础,包括地震定位、地震成像、震源机制反演等工作.本文就目前各类地震事件自动识别及震相拾取方法的原理起源与大致分类应用进行了阐述,重点介绍了三大类方法:第一类是基于振幅(能量)判据的长短时窗比、震源扫描叠加等事件识别以及震相拾取系列方法;第二类是基于波形互相关技术的事件识别方法;第三类是基于波形自相关的盲搜索技术.最后还列举了几类较为前沿的综合性方法及其应用分析,并与传统搜索和拾取方法进行了比对,认为各类单一传统方法各有利弊,不具有普适性,应就具体的研究领域进行综合应用.
[Abstract]:The research of microseismic events is widely used in many fields, and plays an important role in the research of induced earthquake monitoring, ground tremor low-frequency seismic monitoring, earthquake warning and so on.The research on automatic identification of microseismic events and automatic picking up of seismic phases is the basis of the data processing of microearthquakes in the later period, including seismic location, seismic imaging, focal mechanism inversion and so on.In this paper, the principle origin and general classification application of various kinds of automatic seismic event identification and phase pickup methods are expounded. Three kinds of methods are emphatically introduced: the first is the long-time window ratio based on amplitude (energy) criterion, and the first one is based on amplitude (energy) criterion.The methods of source scan superposition and phase pickup are presented. The second category is based on waveform cross-correlation and the third is based on waveform autocorrelation blind search technology.Finally, several kinds of advanced comprehensive methods and their applications are listed and compared with the traditional search and pickup methods. It is concluded that each single traditional method has its own advantages and disadvantages, but it is not universal.Comprehensive application should be carried out in specific research fields.
【作者单位】：中国地震局地球物理研究所;
【基金】：国家自然科学基金(41274088,41474074)资助
【分类号】：P315

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