哈尔滨延寿地震台竖直摆倾斜观测异常特征初探

Abnormal Characteristics of Tilt Observation of Vertical Pendulum at Yanshou Seismological Station of Harbin

哈尔滨延寿地震台属单点观测,能记录到丰富的前兆信息。文章通过对几次地震前台站CZB-1型竖直摆倾斜仪记录数据的异常特征进行分析,探寻倾斜前兆异常与地震的关系。研究发现,在观测点周边350 km范围内,延寿台竖直摆倾斜在震前有较好的短期异常显示。

Although tilt observation of Yanshou Seismological Station is the single point observation, it can capture a lot of valuable precursor abnormal information. Through the analysis on anomaly characteristic of data recorded by CZB-1 vertical pendulum tihmeter of the station before several earthquakes, relation of precursory anomaly of tilt and earthquake is tried to figure out. It is found that tilt of vertical pendulum at Yanshou Station has rather good short-term anomaly in the range of 350 km around the observation sites before earthquakes.