黔江地震台VS型垂直摆观测资料应用初探
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摘要
总结提出了提高黔江地震台VS型垂直摆观测资料分析预报可靠性的工作方法与步骤,旨在为今后地震前及时发现前兆异常提供参考。运用调和分析法、差分法分析了2016年至2017年观测数据,认为武隆5.0级地震前出现了地震前兆异常。同时,认为对黔江地震台VS型垂直摆原始观测资料按30天的步长进行计算效果较为理想。
In this paper, the working methods and steps to improve the reliability of the analysis and prediction of VS-type vertical pendulum observation data of Qianjiang seismic station are summarized,in order to provide reference for the timely detection of precursor anomalies before earthquakes in the future. The observation data from 2016 to 2017 were analyzed by harmonic analysis and difference method, and it was concluded that there was an earthquake precursor anomaly before Wulong earthquake with M5.0. At the same time, it is considered that it is ideal to calculate the original observation data of the VS type vertical pendulum of Qianjiang seismic station according to the step length of 30 days.
In this paper, the working methods and steps to improve the reliability of the analysis and prediction of VS-type vertical pendulum observation data of Qianjiang seismic station are summarized,in order to provide reference for the timely detection of precursor anomalies before earthquakes in the future. The observation data from 2016 to 2017 were analyzed by harmonic analysis and difference method, and it was concluded that there was an earthquake precursor anomaly before Wulong earthquake with M5.0. At the same time, it is considered that it is ideal to calculate the original observation data of the VS type vertical pendulum of Qianjiang seismic station according to the step length of 30 days.
引文
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[2] 吴庆鹏.重力学与固体潮[M]. 北京:地震出版社,1997:253-260.
[3] 国家地震局地球物理研究所.固体潮译文集[M]. 北京:科学技术文献出版社,1980:69-73.
[4] 方俊.固体潮[M]. 北京:科学出版社,1984:30-58.
[5] 蒋骏,李胜乐,张雁滨,等.地震前兆信息处理与软件系统——EIS2000[M]. 北京:地震出版社,2000:215-216.
[6] 郗钦文,侯天航.固体潮汐与引潮常数[J].中国地震,1986,2(2):30-41.
[7] 唐九安.计算固体潮潮汐参数的非数字滤波调和分析方法[J].地壳形变与地震,1999,19(1):49-55.