山西临汾台宽频带倾斜仪映震能力浅析

英文篇名：Primary Analysis on Earthquake Reflecting Ability of Broadband Tiltmeter of Linfen Seismological Station in Shanxi
中文刊名：山西地震
英文刊名：Earthquake Research in Shanxi
作者：李艳 ; 高振强 ; 程冬焱
英文作者：LI Yan1 ; 2 ; GAO Zhen-qiang2 ; 3 ; CHENG Dong-yan2 ; 4(1.Linfen Central Seismological Station of Earthquake Administration of Shanxi Province ; Linfen ; Shanxi 041000 ; China ; 2.National Continental Rift Valley Dynamics Observatory of Taiyuan ; Taiyuan ; Shanxi 030025 ; China ; 3.Xiaxian Central Seismological Station of Earthquake Administration of Shanxi Province ; Xiaxian ; Shanxi 044400 ; China ; 4.Earthquake Administration of Shanxi Province ; Taiyuan ; Shanxi 030021 ; China)
中文关键词：潮汐因子 ; 宽频带倾斜仪 ; 同震响应 ; 映震能力
英文关键词：tide factor ; broadband tiltmeter ; coseismic response ; earthquake reflecting ability
出版日期：2012-01-15
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;山西省地震局夏县中心地震台;山西省地震局;
年：2012
期：01
出版单位：山西地震

摘要

对山西临汾台VP型宽频带倾斜仪观测资料处理发现,与同台观测的普通倾斜仪相比,该仪器灵敏度高,记录的同震阶变幅度远大于普通形变倾斜仪;该仪器映震能力强,在2010年河津M4.8地震、洪洞M3.6地震、2009年陕西高陵M4.4地震等几次地震前记录到了明显的短期、甚至短临异常变化特征,尤其是在河津地震前更是出现了原始曲线形态、潮汐因子、加卸载响应比等多项丰富的异常信息,说明该仪器对山西带南部地震有较好的映震能力,可为今后分析本区及周边地震活动提供判定依据。
It is found that compared with ordinary tiltmeter of Linfen,Shanxi Seismological Station,broadband VP tiltmeter is highly sensitive,with far greater coseismic step extent and more strong earthquake reflecting ability than that of ordinary tiltmeter.Distinct short term imminent anomaly variation characteristics are recorded before several earthquakes such as the 2010 Hejin earthquake of M4.8,the Hongdong earthquake of M3.6 and the 2009 Gaoling,Shaanxi earthquake of M4.4 etc.Especially before the Hejin earthquake,many abundant anomalies such as original curve shape,tide factor and load-unload response ratio etc.It indicates that broadband VP tiltmeter has rather good earthquake reflecting ability for the earthquakes in the south of Shanxi seismic belt and will be helpful for the analysis of seimicity of the area and around in the future.

引文

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