| 海南地区5口井水位对汶川地震的同震响应及其频谱分析 |
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| 引用本文： | 顾申宜,李志雄,张慧.海南地区5口井水位对汶川地震的同震响应及其频谱分析[J].地震研究,2010,33(1). |
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| 作者姓名： | 顾申宜 李志雄 张慧 |
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| 作者单位： | 海南省地震局,海口,570203 |
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| 基金项目： | 地震科学联合基金项目 |
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| 摘 要： | 对比海南地震台网记录的汶川MS8.0地震的地震波形,分析了海南5口井的高采样率数字化水震波波形特征。采用傅立叶变换和小波分解方法,对海南前兆台网5个台水位仪在汶川MS8.0地震中记录到的高采样率数字化水震波进行了频谱分析,结果显示地震波的不同波组激发的水震波波组差别较大,5口井的水震波周期跨度很大,从10多秒到1000多秒,不同井孔的水震波幅度差别较大。同时还初步分析了水震波的形态和水震波各个频率组的形成机理。
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| 关 键 词： | 汶川地震 数字化水位记录 同震效应 小波变换 海南地区 |
Analysis of the Characteristics of Coseismic Records of Five Wells' Water Level in Hainan Area in the M_S8.0 Wenchuan Earthquake Event |
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| GU Shen-yi,LI Zhi-xiong,ZHANG Hui.Analysis of the Characteristics of Coseismic Records of Five Wells' Water Level in Hainan Area in the M_S8.0 Wenchuan Earthquake Event[J].Journal of Seismological Research,2010,33(1). |
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| Authors: | GU Shen-yi LI Zhi-xiong ZHANG Hui |
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| Abstract: | By comparison of the seismic waves of M_S8.0 Wenchuan earthquake recorded by Hainan Digital Seismic Network and the water-seismic waves,the waveform characteristics of the water-seismic waves were analyzed.We also analyzed the spectrum and time features of the water-seismic waves with high sampling rate of Wenchuan earthquake recorded by five water-level meters of Hainan Seismic Precursor Network by means of FFT and Wavelet Transform.The result shows that the variation between the different wave groups of water-seismic waves caused by the different seismic wave groups were great;the periodic range of the water-seismic wave at the five well in Hainan area were large(from 10 s to more than 1000 s)and the difference of the amplitudes of water-seismic waves at different wells also were great.The formation mechanisms of waveforms and different frequency groups of the water-seismic waves were analyzed preliminarily. |
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| Keywords: | Wenchuan strong earthquake digital records of well water level coseismic effects wavelet transform Hainan area |
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