摘要
中国地震局地球物理研究所北京遥测地震台网通过调研,率先提出利用寻北仪测量真北方向,并对该台网地震台地震计摆放方位进行测量与校正,发现部分仪器存在大于10°的方位角偏差。考虑到正确可靠的三分量观测数据对地震科学研究的重要性,针对北京遥测地震台网北京地区10个地震台地震计方位校正前后的地震观测数据,采用质点运动轨迹与P波极性分析方法,研究P波波形资料,以便准确测定地震计以往摆放的方位角,对正确利用地震观测数据开展相关科学研究具有重要意义。
Through the extensive research, Beijing Telemetry Seismic Network （BJSN） proposed using north seeker to confirm the true north for seismometers firstly. BJSN measured and adjusted the azimuth of all stations. During the survey, we find out part of the seismometers existed 10 degrees′error. Considering the importance of the accurate and reliable three component seismic data to the seismic research, we analyzed the P waveform materials of distant earthquakes recorded by 10 stations in Beijing area before and after the calibration. Through the research, we expect to judge whether it is accurate or not using P waveform materials to measure the azimuth of seismic station and explore the method of measuring station′s azimuth in the past years. And acquire the azimuth of part of BJSN stations in some observation period during the past years.
出处
《地震地磁观测与研究》
2015年第4期47-53,共7页
Seismological and Geomagnetic Observation and Research
基金
中央级公益性科研院所基本科研业务专项基金DQJB12B27
关键词
方位角
P波资料
寻北仪
azimuth, P waveform materials, north seeker
