格尔木地震台地倾斜观测干扰因素分析  

ANALYSIS OF INTERFERENCE FACTORS ON GROUND TILT OBSERVATION AT GEERMU SEISMIC STATION

作　　者：廉殷朝 李晓东[2] 李延峰[3] 关冬晓 张洋 LIAN Yin-chao;LI Xiao-dong;LI Yan-feng;GUAN Dong-xiao;ZHANG Yang(Yili Earthquake Monitoring Center,Yining 835000,Xinjiang,China;Earthquake Agency of Xinjiang Uygur Autonomous Region,Urumqi 830011,Xinjiang,China;Qinghai Earthquake Agency,Xining 810001,Qinghai,China)

机构地区：[1]伊犁哈萨克自治州地震监测中心,新疆伊宁835000 [2]新疆维吾尔自治区地震局,新疆乌鲁木齐830011 [3]青海省地震局,青海西宁810001

出　　处：《内陆地震》2025年第1期85-93,共9页Inland Earthquake

摘　　要：为提高地震地形变观测数据的应用效率,增强地震形变异常提取的可靠性。将格尔木地倾斜及气象辅助测项分解为潮汐频段、月波、年周期等频段,定量地研究地震地倾斜在不同频段的干扰因素。结果表明:①格尔木地倾斜在潮汐频段一致性较好,主要影响因素为固体潮;②格尔木地倾斜年波频段经相位平移之后,与气温具有较高的线性相关性,说明格尔木地倾斜年周期变化受温度的影响较大。When we are committed to studying the current crustal movement,seismic topographic deformation and earthquake prediction,various effects from the outside of the earth are often regarded as interference in general,which should be eliminated through data processing.In order to improve the application efficiency of geophysical field observation data and enhance the reliability of seismic anomaly extraction,this paper decomposes Geermu earth tilt,air temperature and air pressure into daily wave,semi daily wave,monthly wave and annual wave,and quantitatively studies the interference factors of earth tilt in different frequency bands.The results show that①Germu earth tilt has good consistency in the frequency bands of diurnal wave and semidiurnal wave,and the main influencing factor is solid tide;②After phase shift,the annual wave band of earth tilt has a high linear correlation with air temperature,indicating that the annual periodic change of Geermu earth tilt is greatly affected by temperature.

关 键 词：水平摆倾斜 垂直摆倾斜 格尔木 干扰因素 相关性 

分 类 号：P315.7[天文地球—地震学]