摘要
对同一观测山洞内2套不同型号的重力仪观测资料,从观测数据质量、背景噪声水平、记录地震能力和同震响应特征等方面进行对比分析,结果表明:①GS-15重力数据可用率和连续度更好,而gPhone重力观测精度、背景噪声水平更优;②GS-15重力记录中强地震数量、地震延续时间、同震响应延续时间等方面更有优势,而gPhone重力记录地震初动时刻、同震响应更早;③二者记录地震以及同震响应的初动时刻、持续时间等与仪器的滤波常数和阻尼系数有关,响应形态的初动方向与测站和震中的方位有关。
The observation data of two different types of gravimeters in the same observation cave are compared and analyzed from the aspects of observation data quality,background noise level,recording earthquake ability and co-seismic response characteristics.The results show that:GS-15 gravity data has better availability and continuity,while gPhone gravity observation accuracy and background noise level are better;the GS-15 gravity record has more advantages in the number of strong earthquakes,the duration of earthquakes,and the duration of co-seismic response,while the gPhone gravity record has earlier initial motion time and co-seismic response.The initial motion time and duration of the recorded earthquake and coseismic response are related to the filter constant and damping coefficient of the instrument,and the initial motion direction of the response pattern is related to the azimuth of the station and the epicenter.
作者
杨绍富
YANG Shao-fu(Korla Earthquake Monitoring Center Station,Earthquake Agency of Xinjiang Uygur Autonomous Region,Korla 841000,Xinjiang,China)
出处
《内陆地震》
2025年第4期399-406,共8页
Inland Earthquake
