| 断裂带首波研究进展 |
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| 引用本文： | 杨微.断裂带首波研究进展[J].西北地震学报,2019,41(6):1407-1418. |
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| 作者姓名： | 杨微 |
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| 作者单位： | 中国地震局地球物理研究所地震观测与地球物理成像重点实验室, 北京 100081 |
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| 基金项目： | 政府间国际科技创新合作重点专项（2016YFE0109300）；国家自然科学基金项目（41974069）；中国地震局地球物理研究所基本科研业务费专项（DQJB19B32） |
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| 摘 要： | 断裂带首波是沿着存在物性差异界面传播的一种地震折射波,在传播过程中携带了断裂带的重要信息,对分析和研究断裂带以及附近区域的精细结构提供了一种新的分析方法。本文主要阐述断裂带首波的产生原理、波形特征、识别及分析方法等,介绍目前国际上识别及利用断裂带首波开展断裂带特征方面的研究现状,并针对地震危险区域存在物性差异的断裂带,提出可结合密集台阵观测技术,利用断裂带首波进行断裂带精细结构探测及其变化监测研究,提高潜在孕震环境及发生机理的认识水平。
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| 关 键 词： | 断裂带首波 偏振分析 速度差异 精细结构 破裂方向 |
| 收稿时间： | 2019/8/25 0:00:00 |
Recent Advances in Fault Zone Head Waves |
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| YANG Wei.Recent Advances in Fault Zone Head Waves[J].Northwestern Seismological Journal,2019,41(6):1407-1418. |
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| Authors: | YANG Wei |
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| Institution: | Key Laboratory of Seismic Observation and Geophysical Imaging, Institute of Geophysics, China Earthquake Agency, Beijing 100081, China |
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| Abstract: | Fault zone head waves (FZHW) are seismic refraction waves propagating along an interface of varying physical properties. They carry abundant information about fault zones, and have provided a new method for analyzing the fine structure of the fault zone and its adjacent area. This paper mainly describes the generating principle, waveform characteristics, identification, and analysis methods of FZHW, and describes recent advances in the identification and utilization of the FZHW to analyze the characteristics of the fault zone. Aiming at fault zones with varying physical properties in a seismic risk area, fine structure detection and dynamics monitoring of a fault zone using FZHW and dense array observation technology is described. This review should improve understanding of potential seismogenic environments and mechanisms. |
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| Keywords: | fault zone head wave polarization analysis velocity difference fine structure rupture direction |
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