从雅江地震看地震前兆数字化台网技术

Digital technique used in the ground well in seismic precursor observation network

石棉川— 0 2井系国家基本井 ,其井水位观测值对附近区域内的地震有比较敏感的前兆反映 ,在进行地震前兆数字化技术改造后 ,处于试记和调试阶段的LN— 3型数字水位仪 ,记录到了一些地震前兆信息。LN— 3型数字水位仪与SW40 - 1型浮子式机械水位仪相比 ,不仅信息传递快 ,而且记录了更丰富的有用信息。

By the improvement of instrument used in observation of ground water level and the adopting the digital technique,seismic message contained in the observation data were distinguished clearly especial before Yajiang earthquake occurred.The digital observation recording is better than mechanical observation recording and is easy to transmit quickly.