马陵山站硐室改造前后VS型垂直摆倾斜仪数据质量分析  

Analysis of observation quality changes before and after the renovation of cavern with vertical pendulum

作　　者：赵小贺[1,2,3] 公续升 王西宝 程树岐 杨永生 Zhao Xiaohe;Gong Xusheng;Wang Xibao;Cheng Shuqi;Yang Yongsheng(Linyi Seismic Monitoring Center Station of Shandong Earthquake Agency,Shandong Linyi 276000,China;National Seismic Instrument Comparison Base(Shandong),Shandong Tancheng 276100,China;Field Scientific Observation and Research Station of Low-rate Compression and Thrust Structure in Tancheng Shandong,Shandong Tancheng 276100,China)

机构地区：[1]山东省地震局临沂地震监测中心站,山东临沂2760002 [2]国家地震仪器比测基地(山东),山东郯城2761003 [3]山东郯城巨震低速率挤压逆冲构造野外科学观测研究站,山东郯城276100

出　　处：《地震科学进展》2024年第4期272-277,共6页Progress in Earthquake Sciences

摘　　要：利用潮汐分析法,分析和评价了马陵山站VS型垂直摆倾斜仪硐室改造前后数据质量的变化情况,结果表明:(1)历年数据观测精度m_γ均小于0.02,仪器搬迁至改造后硐室又有显著提升,数据质量优于搬迁前,超越全国形变优秀台的标准;(2)搬迁后仪器观测噪声水平M_l始终在0.005″左右,稳定性更好;(3)校正后发现搬迁前仪器安装方位角存在较大偏差,影响M_(2)波相位滞后。硐室环境优化改造是有效改善观测数据精度,提高数据质量的重要保证。The tide analysis method was used to analyze and assess changes in the quality of the observed data before and after the renovation of cavern with vertical pendulum tiltmeter in Malingshan seismic station.The results show that:①The observation accuracy(mγ)of every year all is less than 0.02,it has a markable improvement after the instruments relocation,which is better than before,surpassing the standard of excellent deformation stations of the whole country.②After the relocation,the noise level(M1)is always around 0.005″,and the stability is better.③After correction,it is found that there is a large deviation in the installation azimuth of the instrument before relocation,which affects the phase lag of M_(2) wave.Optimization of chamber environment is beneficial to improve the accuracy of observation data,and it provides a guarantee for the observation equipment to produce high-quality observation data.

关 键 词：硐室改造 垂直摆 数据质量 对比分析 

分 类 号：P315.62[天文地球—地震学]