| 河北北部地区平均波速比分析 |
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| 引用本文： | 刘静,张环曦,尹宏伟,董博,张蕾,李瑞卿.河北北部地区平均波速比分析[J].地震地磁观测与研究,2017,38(3):18-22. |
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| 作者姓名： | 刘静 张环曦 尹宏伟 董博 张蕾 李瑞卿 |
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| 作者单位： | 中国河北 050000 石家庄地震中心台 |
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| 基金项目： | 河北省地震局青年基金项目（批准号：DZ20150423065） |
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| 摘 要： | 河北省北部地区地质构造较为复杂,历史上多次发生破坏性地震。基于河北数字地震台网震相到时报告数据,使用和达法,计算2006年1月至2015年10月河北省北部地区平均波速比,分析部分地震前波速比时序变化特征,发现震前波速比数值呈现正常—低值异常—恢复—发震的异常演变特征,为地震波速比变化与地震前兆相关性研究提供一定参考信息。
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| 关 键 词： | 波速比 前兆变化 最小二乘法 |
The average wave velocity ratio determination and correlation analysis in northern Hebei |
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| Liu Jing,Zhang Huanxi,Yin Hongwei,Dong Bo,Zhang Lei,Li Riuqing.The average wave velocity ratio determination and correlation analysis in northern Hebei[J].Seismological and Geomagnetic Observation and Research,2017,38(3):18-22. |
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| Authors: | Liu Jing Zhang Huanxi Yin Hongwei Dong Bo Zhang Lei Li Riuqing |
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| Institution: | Shijiazhuang Seismic Station, Hebei Province 050000, China |
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| Abstract: | Based on seismic phase time reports from Hebei Digital Seismic Network from January 2006 to October 2015, the average velocity ratio in the north of Hebei Province was calculated by adopting least square method. By analyzing the time serie variation behavior of the velocity ratio before the significant seismic of the study area, the obvious normal-low anomaly-recovery-abnormal evolution characteristic was presented before earthquake. This result provides useful reference information for the precursory change study of seismic velocity. |
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| Keywords: | velocity ratio precursory change least square method |
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