怀来地震台伸缩仪EW向改进试验

THE EXPERIMENTAL RECONSTRUCTION OF THE EXTENSOMETER IN HUAILAI SEISMOSTATION

摘要: 对怀来台伸缩仪EW向基线固定端、传感器进行布设改进试验,将原有28 m长基线改为两段短基线(东段:14.6 m,西段:13.4 m)。改进后,两条短基线取得了较好的观测成果,其中东段基线改造效果非常明显,观测曲线干扰减少,光滑度显著提高,观测数据精度明显优于改造前的观测数据。这次改造试验解决了困扰怀来台多年的难题。

Abstract: An experimental reconstruction of the disposal of the extensometer(EW: base line,fixed end and sensor) is made in Huailai Station.The precision of observational data at extensometer before and after reconstruction are compared.The mean value of the relative error in 2008 is 0.094 8,and is better than in 2007 (before the reconstruction).Meanwhile,the interferences are decreased significantly.Result show that the effects are significant after the reconstruction.