山西河津地震前临汾台倾斜及应变异常特征分析

英文篇名：Titer and Strain Anomalous Characterizes at Linfen Seismological Station before Hejin Earthquake
中文刊名：山西地震
英文刊名：Earthquake Research in Shanxi
作者：李艳 ; 高振强 ; 冯建琴 ; 荆红亮 ; 张仰辉
英文作者：LI Yan1 ; 2 ; GAO Zhen-qiang1 ; 2 ; FENG Jian-qin1 ; 2 ; JING Hong-liang1 ; 2 ; ZHANG Yang-hui1 ; 2(1.Linfen Central Seismological Station of Earthquake Administration of Shanxi Province ; Linfeng 044400 ; China ; 2.Continental Rift Valley Dynamics State Observatory of Taiyuan ; Taiyuan 030025 ; China)
中文关键词：倾斜仪 ; 应变仪 ; 高频信息 ; 错位掉格 ; 同步特征
英文关键词：tiltmeter ; strainmeter ; high-frequency information ; dislocation and drift ; synchronous characteristics
出版日期：2011-01-15
机构：山西省地震局临汾中心地震台;太原大陆裂谷动力学国家野外科学观测研究站;
年：2011
期：01
出版单位：山西地震

摘要

通过分析2010年1月24日河津MS4.8地震前临汾台倾斜仪、应变仪资料,发现自1月上中旬开始,石英摆、体应变、垂直摆出现明显的加速、转折、高频突跳等异常反映;经小波函数分段计算得知,3仪器均在震前7天左右记录到明显的高频异常信息;震前1月宽带垂直摆(实验仪器)SN向连续出现错位(掉格)现象;各测项在异常时间出现的进程上呈明显准同步性特征。
Through the analysis on the tilt and strain observation data of Linfen Central Seismological Station before Hejin Ms4.8 earthquake on January 4th,2010,some anomalies,including obvious acceleration,turn and sudden high-frequency jump of quartz pendulum,body strain and vertical pendulum,are found since early middle of January.The segmented calculation by using wavelet function indicate that 7 days before the earthquake,all records of the three instruments have obvious high-frequency information.In addition,the broadband vertical pendulum(one experiment instrument) in SN direction continuously appeared dislocation(drift) one month before the earthquake.The times of anomaly appearance of each observation item showed quasi-synchronous characteristics.

引文

[1]高振强,冯建琴,张仰辉,等.山西临汾中心地震台石英摆倾斜仪前驱波特征分析[J].山西地震,2009,4(2):1-6.
[2]陈德福.潮汐形变前驱波的时空特征[J].大地测量与地球动力学,2006,26(2):24-30.