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| 2015年内蒙古阿拉善MS5.8地震前地电阻率变化特征研究 | |
| 引用本文： | 叶青,张翼,黄兴辉,余丹,刘高川,范晔.2015年内蒙古阿拉善MS5.8地震前地电阻率变化特征研究[J].地震,2017,37(4):123-133. |
| 作者姓名： | 叶青 张翼 黄兴辉 余丹 刘高川 范晔 |
| 作者单位： | 1.中国地震台网中心, 北京 100045; 2.新疆维吾尔自治区地震局, 新疆 乌鲁木齐 830011 |
| 基金项目： | 国家自然科学基金(41374080); 中国大陆综合地球物理场仪器研发专项(Y201603)资助 |
| 摘 要： | 本文讨论了2015年内蒙古阿拉善MS5.8地震前500 km范围内6个台的地电阻率变化, 得到如下结论: ① 石嘴山、 银川、 海原、 固原等台站震前1年半左右出现了较明显的趋势下降变化, 尤其以距离震中最近的石嘴山台下降幅度最大。 ② 利用年变畸变方法分析了石嘴山、 银川、 海原、 固原台的电阻率震前几年的年度变化发现几个台震前均发生了年变化畸变现象。 ③ 几个台地电阻率原始小时值的均方差在震前1~3月内均同时出现了大幅度突跳现象。 |
| 关 键 词： | 地电阻率 年变化畸变 相对均方差 阿拉善MS5.8地震 |
| 收稿时间： | 2017-01-25 |
Characteristics of Resistivity Variations before the April 15, 2015 Alashan Zuoqi MS5.8 Earthquake |
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| YE Qing,ZHANG Yi,HUANG Xing-hui,YU Dan,FAN Ye,LIU Gao-chuan.Characteristics of Resistivity Variations before the April 15, 2015 Alashan Zuoqi MS5.8 Earthquake[J].Earthquake,2017,37(4):123-133. | |
| Authors: | YE Qing ZHANG Yi HUANG Xing-hui YU Dan FAN Ye LIU Gao-chuan |
| Institution: | 1.China Earthquake Networks Center, Beijing 100045, China; 2.Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011, China |
| Abstract: | The MS5.8 earthquake occurred at Alashan Zuoqi of Inner Mongolia, China. Six earth resistivity variation stations located about 500 km from the epicenter of the earthquake were discussed and analyzed. The trend of earth resistivity decreases about one year prior to the Alashan earthquake at Shizuishan, Yinchuan, Haiyuan and Guyuan. Especially, earth resistivity of Shizuishan, the nearest station from the epicenter, shows the maximum amplitude of decline. Earth resistivity of Shizuishan, Yinchuan, Haiyuan, Guyuan show distorted anomalies in annual variation. The relative mean square deviation of earth resistivity shows sudden jump 1~3 months prior to this earthquake. |
| Keywords: | Earth resistivity Annual variation distortion Relative mean square deviation The 2015 Alashan Zuoqi Earthquake |
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