短水准跨断层测站高频异常原因探讨  

Discussion on the Causes of High Frequency Anomaly in Cross Fault along Shortrange Leveling Measuring Spots

作　　者：郭国祥 张红秀[1,2] 荆红亮 罗振东[1,2] GUO Guoxiang;ZHANG Hongxiu;JING Hongliang;LUO Zhendong

机构地区：[1]山西地震局临汾中心地震台,山西临汾041000 [2]太原大陆裂谷动力学国家野外科学观测研究站,山西太原030025

出　　处：《山西科技》2019年第5期125-127,130,共4页Shanxi Science and Technology

摘　　要：针对山西地震局临汾中心地震台短水准跨断层测站观测资料2014—2017年出现的2次高频异常现象,依据异常核实方法,通过对断层活动状况、测线环境、自然环境、仪器以及标尺条形码磨损等主要因素进行对比分析,认为标尺条形码磨损、受大气折光等综合因素影响导致高频异常,并非地震前兆异常,对地震异常判定具有参考价值。In view of the two high frequency anomaly from observation data of cross fault along short-range leveling measuring spots at Linfen Center Seismostation of Shanxi Seismological Bureau in 2014-2017,according to abnormal verification method,through comparison and analysis of main factors such as fault activity status,survey line environment,natural environment,instruments and rod bar code wear,this paper considers that rod bar code wear and atmospheric refraction are main influencing factors resulting in high frequency anomaly,not earthquake precursor anomaly,which has reference value to the seismic anomaly judgement.

关 键 词：水准观测 WN向测段 测站高差 高频异常 

分 类 号：P315.725[天文地球—地震学]