| 张家口地震台垂直摆倾斜仪固体潮半月波分析 |
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| 引用本文： | 郑毅,任佳,李峰,宁海雯,周亚.张家口地震台垂直摆倾斜仪固体潮半月波分析[J].地震地磁观测与研究,2017,38(5):109-112. |
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| 作者姓名： | 郑毅 任佳 李峰 宁海雯 周亚 |
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| 作者单位： | 1. 中国河北 075000 张家口地震中心台;2. 中国河北 063000 唐山地震中心台 |
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| 摘 要： | 张家口地震台垂直摆能记录到清晰固体潮半月波。从原始曲线可见,观测曲线与理论曲线形态相近,幅度基本一致,只是观测曲线因气压影响欠光滑。利用频谱分析和小波分析方法提取该台垂直摆观测资料中的半月波变化特征,频谱分析结果显示:垂直摆观测资料清晰检测到半月波MF,幅值近17×10~(-3)″。小波分析结果显示:分离出的垂直摆固体潮半月波与地倾斜理论固体潮的半月波形态一致,幅度相当,相位吻合。张家口地震台垂直摆能观测到清晰的固体潮半月波,是多方面技术改造和精心维护的结果。
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| 关 键 词： | 垂直摆 固体潮 半月波 频谱分析 小波分析 |
Analysis of solid tide half moon wave of vertical pendulum tiltmeter at Zhangjiakou Seismic Station |
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| Zheng Yi,Ren Jia,Li Feng,Ning Haiwen,Zhou Ya.Analysis of solid tide half moon wave of vertical pendulum tiltmeter at Zhangjiakou Seismic Station[J].Seismological and Geomagnetic Observation and Research,2017,38(5):109-112. |
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| Authors: | Zheng Yi Ren Jia Li Feng Ning Haiwen Zhou Ya |
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| Institution: | 1. Zhangjiakou Seismic Station, Hebei Province 075000, China;2. Tangshan Seismic Station, Hebei Province 063000, China |
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| Abstract: | The vertical pendulum of Zhangjiakou Seismic Station can records a clear solid tide half moon wave. From the original curve, the observed curve is close to the theoretical curve and the amplitude is basically the same, but the observation curve is not smooth due to the influence of air pressure. Frequency spectrum analysis and wavelet analysis are used to extract the characteristics of the half moon wave in the vertical pendulum observation data, the results of spectrum analysis show that the half wave MF is clearly detected in the vertical pendulum observation data of Zhangjiakou Seismic Station, and the amplitude is nearly 17×10-3". The results of wavelet analysis show that the semi tidal wave of the vertical pendulum is consistent with the crescent wave of the earth tilt theory, and the amplitude is the same, and the phase is consistent. The vertical pendulum of Zhangjiakou Seismic Station can observe the clear solid tide and half moon wave, which is the result of many aspects of technical renovation and careful maintenance. |
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| Keywords: | vertical pendulum solid tide half moon wave spectrum analysis wavelet analysis |
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