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| 短水准震前异常的演化特征 | |
| 引用本文： | 张跃刚,孙佩卿,陈立强,支树明,米雪梅.短水准震前异常的演化特征[J].华北地震科学,2002,20(3):14-21. |
| 作者姓名： | 张跃刚 孙佩卿 陈立强 支树明 米雪梅 |
| 作者单位： | 1. 河北省地震局,河北,石家庄,050021 2. 河北省地震局宽城地震台,河北,宽城,067600 3. 河北省地震局易县地震台,河北,易县,074211 |
| 基金项目： | “十五”攻关课题《强地震短期预测方法研究》0 1 -0 1 -0 1资助 |
| 摘 要： | 以1998年1月10日张北M6.2级地震为例，分析了地震前宽城短水准、兴隆短水准和易县短水准异常的特征。短水准资料具有年变周期，分析异常必须剔除年变。本文应用周期滤波方法对短水准资料进行了处理，发现短水准异常地震前有明显的阶段性，异常发展可分为初期、中期、临震三个阶段，且具有明显的由中期向短临转化标志。 |
| 关 键 词： | 水准异常 张北地震 周期滤波法 年变周期 零漂速率 |
| 文章编号： | 1003-1375(2002)03-0014-08 |
| 修稿时间： | 2002年6月3日 |
The evolutive character of fixed leveling anomaly |
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| ZHANG Yue gang ,SUN Pei qing ,CHEN Li qiang ,ZHI Shu ming ,MI Xue mei.The evolutive character of fixed leveling anomaly[J].North China Earthquake Sciences,2002,20(3):14-21. | |
| Authors: | ZHANG Yue gang SUN Pei qing CHEN Li qiang ZHI Shu ming MI Xue mei |
| Institution: | ZHANG Yue gang 1,SUN Pei qing 1,CHEN Li qiang 2,ZHI Shu ming 3,MI Xue mei 1 |
| Abstract: | Based on Zhangbei earthquake occurred on Jan.1,1998,the character of fixed leveling anomalies observed in Kuancheng,Xinglong and Yixian Seismostation are analyzed.As the data of fixed leveling have annual period,so we must eliminate its annual variation before analyzing its anomaly.After processed with periodical filtering method we find fixed leveling anomalies have different phases in development,which can be divided into early term,medium term and imminent term three stages,and it has distinct sign turning from medium term into imminent term. |
| Keywords: | fixed leveling anomalies evolutive character Zhangbei earthquake periodical filtering |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |