| 大地电场台站日变幅年度变化趋势分析 |
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| 引用本文： | 赵文舟,马钦忠,陈婧,李伟,周江南,杨彦明.大地电场台站日变幅年度变化趋势分析[J].地震地磁观测与研究,2018,39(6):165-172. |
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| 作者姓名： | 赵文舟 马钦忠 陈婧 李伟 周江南 杨彦明 |
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| 作者单位： | 1.中国上海 200062 上海市地震局;2.中国呼和浩特 010010 内蒙古自治区地震局 |
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| 基金项目： | 上海市科委项目（项目编号：16dz1205800）；上海市地震局科技专项（项目编号：2017专5） |
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| 摘 要： | 为了直观展示大地电场日变幅年度变化趋势，获取多年尺度下数据变化形态及特征，选取2012-2015年，4个地电台网8个存在潮汐地电场变化的地电台站观测数据，进行去除台阶、异常数据及滤波处理，计算地电场日变幅。结果显示：①2012-2013年大多数台站存在春冬低、夏秋高的日变幅趋势性特征；②2014-2015年存在几种不同日变幅年度变化趋势，同时同一台站不同测道间日变幅变化趋势存在差异性，该变化趋势和差异性的存在可能与地下介质结构变化和介质的非均匀性有一定关系。
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| 关 键 词： | 地电场 日变幅 异常剔除 年度变化趋势 |
The annual variation trend analysis of daily amplitude of geoelectric field in nine stations |
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| Zhao Wenzhou,Ma Qinzhong,Chen Jing,Li Wei,Zhou Jiangnan,Yang Yanming.The annual variation trend analysis of daily amplitude of geoelectric field in nine stations[J].Seismological and Geomagnetic Observation and Research,2018,39(6):165-172. |
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| Authors: | Zhao Wenzhou Ma Qinzhong Chen Jing Li Wei Zhou Jiangnan Yang Yanming |
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| Institution: | 1.Shanghai Earthquake Agency, Shanghai 200062, China;2.Earthquake Agency of Inner Mongolia Autonomous Region, Huhhot 010010, China |
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| Abstract: | In order to display the annual trend of geoelectric field and obtain the change patterns and characteristics of years of scale, using the observed data of geoelectric network between 2012 and 2015, we compute the daily variation of 8 geoelectric stations which existed tidal wave changes in these 4 years. The results of the calculation and graph show that characteristics of daily variation trend at most stations are lower in spring and winter, higher in summer and autumn between 2012 and 2013. There are several different annual variation trend of daily variation from 2012 to 2013, while daily variation trend of the same station but different measuring channel also exist differences. The trends and differences may be related to structure change and heterogeneity of underground medium. |
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| Keywords: | geoelectric field daily amplitude exception handing annual trend |
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