唐山矿井模拟与数字水位的记震能力对比分析

Comparison of the Ability of Recording Seismic Wave between Digital and Anologue Groundwater Level Observation in Tangshan Mine Well

介绍了唐山矿井模拟水位与数字水位观测的基本情况,对2004年7月至12月11次全球7级以上地震引起唐山矿井模拟水位与数字水位水震波特征进行了对比分析。结果表明数字水位有较模拟水位的记震特征易识别,水震波初动清楚,资料连续,误差小等优点,但数字水位采样率低,水震波记录存在畸变。

The basic observation conditions of both digital and anologue groundwater level observation in Tangshan mine well is introduced, and the ability for recording seismic wave from 11 global earthquakes（Ms≥7） from July to December in 2004 for two kinds of observation is analyzed. The result shows that the digital data have some advantages： the character recognition is easier, the initial motion is clear, the data are continuous, and the interference is small. But it is still has some shortages such as the sampling rate is lower, and the water level vibration is easier to be distorted.