【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。更多还原

【Abstract】 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.更多还原