库尔勒地震台伸缩仪观测资料干扰分析  

Interference factor analysis of the extensometer observation data at Korla Seismic Station

作　　者：张嘉敏 苏萍 徐长银 李姗姗 Zhang Jiamin;Su Ping;Xu Changyin;Li Shanshan(Korla Seismic Station, Xinjiang Uygur Autonomous Region 841000, China)

机构地区：[1]库尔勒地震台,中国新疆维吾尔自治区841000

出　　处：《地震地磁观测与研究》2016年第4期121-126,共6页Seismological and Geomagnetic Observation and Research

基　　金：中国地震局"三结合"课题(153103);新疆维吾尔自治区地震局基金课题(201416)联合资助

摘　　要：通过对库尔勒地震台伸缩仪历史观测数据的跟踪分析,发现伸缩仪运行所受干扰多样化,如:气象(包括气压、降雨、大风、温度)因素、供电故障及人为因素(包括仪器维修、调零、标定、进出观测山洞等),其中气压变化对观测数据的干扰尤为明显。在日常维护工作中,需尽可能一次性完成仪器调零、检修,减少干扰频次;观测洞室良好的密封可减少空气对流。分析观测数据曲线干扰特征,对识别干扰类型,落实干扰异常具有重要意义。The author analyzed various interference factors of the historical observation data of the extensometer at Korla Seismic Station and summarized main interference factors. The result shows that air pressure change influences on extensometer observation data obviously. The relation between observation data and air pressure is direct ratio. Other interference factors, such as meteorological factors (including air pressure, rain, wind and temperature), equipment failure,maintenance, power supply failure and human factor, are greatly effect on the observation data.Based on the analysis and recognition of the characteristics of data curve impacted by differentint erference factors, it suggests that it will be better to eliminate and reduce the interferences on the instrument for improving the quality of the observation data.

关 键 词：伸缩仪 观测资料 干扰因素 仪器改造 

分 类 号：P315.62[天文地球—地震学]