【摘要】 简要叙述了青海地区6个钻孔应变台站的观测概况,通过分析,认为主要存在观测技术系统和观测环境变化这两类干扰。在排除各类干扰后,发现只有乐都台和湟源台在汶川地震前出现了前兆异常。更多还原

【Abstract】 It is introduced briefly the six borehole strain stations in Qinghai province,and the results show that there exists two kinds of interferences which are observation systems and observation environmental changes.After cleaning the interferences,the data recorded by Ledu and Huangyuan seismic stations appeared precursory anomalies before the Wenchuan earthquake.更多还原