滇西试验场重力潮汐观测及其地震响应特征的研究

Gravity Tide Observation and Research of Response Characteristics to Earthquakes in Western Area, Yunnan Province

本文使用Ｎａｋａｉ预处理、Ｖｅｎｅｄｉｋｏｖ调和分析和滑动滤波等方法，对滇西地震实验场下关台ＧＳ１５－２２７重力仪１９８７—１９９２年和丽江台ＥＴ－２２重力仪１９９０—１９９２年观测资料进行了系统分析，确定了该地区最佳重力潮汐参数及潮汐和非潮汐动态变化背景，并对观察期间的６个震例进行清理，分析了重力异常变化与地震的关系，获得了该地区重力潮汐和非潮汐信息的地震响应特征。

In the paper, we discribed the constructure and operation properties of GS15-227 and ET-22 gravimeters and also computed the observation data of the two meters from 1987 to 1992 at Xiaguan and Lijiang station, Yunnan Province, with Nabal processing and Venedikov harmonic methods. Consequently the optimal tidal parameters, the tidal and non-tidal dynamical background were determinated after having been flited and corrected. Moreover six-earthquakes were collected and anomaly variation and the activity of earthquakes. Finally we obtained the response characteristics of tidal and non-tidal signals to earthquakes in the area.