| 浙江省测震观测台网井下地震计方位角检测与校正 |
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| 引用本文： | 张明,陈军辉,严俊峰,尹晶飞,戴陈兵.浙江省测震观测台网井下地震计方位角检测与校正[J].地震地磁观测与研究,2019,40(4):125-129. |
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| 作者姓名： | 张明 陈军辉 严俊峰 尹晶飞 戴陈兵 |
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| 作者单位： | 中国杭州310013 浙江省地震局;中国杭州310013 浙江省地震局;中国杭州310013 浙江省地震局;中国杭州310013 浙江省地震局;中国杭州310013 浙江省地震局 |
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| 基金项目： | 2018年浙江省地震局科技计划（项目编号：2018zjj18） |
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| 摘 要： | 选取浙江省测震台网景宁、北仑、南麂岛地震台井下地震计观测数据，采用地震数据波形相关性分析法，与地表地震计同步观测数据进行相关性分析，检测并校正井下地震计方位角，结果发现，3个地震台井下地震计方位角实际偏差分别为82.2°、-22.8°、32.2°。分析认为，井下地震计安装易受线缆应力影响，导致方位角与实际偏差过大，应在应力释放完成后固定地震计，并架设地表地震计进行数据相关性分析，以确定方位角可靠性。
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| 关 键 词： | 相关性分析 方位角检测 方位角校正 井下地震计 |
Detection and correction of azimuth of borehole seismograph in Zhejiang Seismic Network |
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| Zhang Ming,Chen Junhui,Yan Junfeng,Yin Jingfei,Dai Chenbing.Detection and correction of azimuth of borehole seismograph in Zhejiang Seismic Network[J].Seismological and Geomagnetic Observation and Research,2019,40(4):125-129. |
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| Authors: | Zhang Ming Chen Junhui Yan Junfeng Yin Jingfei Dai Chenbing |
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| Institution: | Zhejiang Earthquake Agency, Hangzhou 310013, China |
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| Abstract: | The borehole seismograph observation data are chosen form Jingning, Beilun and Nanji Island in Zhejiang Seismic Network, the correlation analysis of the borehole seismic waveform data with the ground seismometer observation data is performed synchronously to detect and correct the borehole seismograph azimuth angle. The results are found that actual deviation of three seismic borehole seismograph azimuth were 82.2°, 22.8° and 32.2° respectively. It is concluded that the installation of borehole seismograph is easily affected by cable stress, which leads to too large deviation between azimuth and its reality. So it is necessary to fix the seismometer after the completion of stress release, and set up a ground seismometer for data correlation analysis so as to determine the reliability of azimuth angle. |
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| Keywords: | correlation analysis azimuth detection azimuth correction bore hole seismometer |
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