姑咱台2008年汶川8.0级地震钻孔应变观测报告
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摘要
"十五"期间,YRY四分量钻孔应变仪在全国开始安装,姑咱台是距离汶川地震震中最近的钻孔应变仪台站。本文介绍了该仪器的工作情况,分析了各种干扰因素对仪器观测的影响,在此基础上对汶川地震前1年多大量出现的曲线的畸变和"毛剌"现象进行分析,认为它不是任何干扰造成的。
In the tenth five-year plan period YRY four-component borehole strain meters were deployed nationwide,and the Guzan station was the nearest to the epicenter of Wenchuan earthquake.This paper describes the performance of this instrument and analyzes the impacts of various interfering factors on observation.On this basis we analyzed the frequent phenomena of distortions and spikes of the observation curve in more than one year before the Wenchuan earthquake,and concluded that they were not caused by any interference.
引文
[1]阳光,2006,姑咱地震台YRY-4钻孔应变仪安装报告。
    池顺良,武红龄,骆鸣津.2007.钻孔应变观测中潮汐因子离散性与各向异性原因探讨.地球物理学进展,22(6):1746~1753.
    董雪梅,徐建明,张晋川等.2009.四川前兆钻孔应变台站观测系统运行管理现状分析.四川地震,(4):31~36.
    四川省地震局.2004.四川省地震监测志.成都:地图出版社.

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