| 新疆天山地区的波速比异常分析 |
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| 引用本文： | 张琳琳,高朝军.新疆天山地区的波速比异常分析[J].中国地震研究,2017,31(1):39-50. |
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| 作者姓名： | 张琳琳 高朝军 |
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| 作者单位： | 新疆维吾尔自治区地震局, 乌鲁木齐市新市区科学二街338号 830011,新疆巴里坤地震台, 哈密 839200 |
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| 基金项目： | This project was sponsored by the Specific Fund of Fundamental Research, Institute of Geophysics, China Earthquake Administration (DQJB16B19). |
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| 摘 要： | Based on the seismic observation report data provided by the Xinjiang Digital Seismic Network from 2009 to 2014,we calculate the wave velocity ratio and its background value for medium and small earthquakes by using the multi-station method in Tianshan,Xinjiang.This paper analyzes the variation of the wave velocity ratio disturbance value to highlight the abnormal,and also back-traces 7 moderate earthquakes at the research area.The results show that:(1)the background value of the wave velocity ratio is almost 1.70,the wave velocity ratio obviously decreases in the middle-eastern part of Tianshan and the region near the Puchang fault;(2)the wave velocity ratio disturbance value is mostly low in the epicenter before four earthquakes of M≥5.0 from 2011 to 2013 in the study area;(3)before 7 moderate strong earthquakes,the earthquake events with low value of the wave velocity ratio account for over 60% of corresponding total events near the epicenters,and the low value of the wave velocity ratio is relatively obvious before moderate earthquakes.
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| 关 键 词： | 地震观测报告 多台和达法 波速比扰动值 天山地区 |
| 收稿时间： | 2015/7/29 0:00:00 |
| 修稿时间： | 2015/12/8 0:00:00 |
Analysis of the Wave Velocity Ratio Anomalies in the Tianshan Region of Xinjiang |
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| Zhang Linlin and Gao Chaojun.Analysis of the Wave Velocity Ratio Anomalies in the Tianshan Region of Xinjiang[J].Earthquake Research in China,2017,31(1):39-50. |
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| Authors: | Zhang Linlin and Gao Chaojun |
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| Institution: | Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011, China and Barkol Seismic Station, Earthquake Administration of Xinjiang Uygur Autonomous Region, Hami 839200, Xinjiang, China |
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| Abstract: | |
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| Keywords: | Seismic observation report Multi-station method The wave velocity ratio disturbance value Tianshan region |
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