The harmonic analysis of vertical deformation data of Shenzhen Huangbeiling fault is carried out and the tidal factor variation of Yichang DZW gravimeter dada is calculated.The results of Huangbeiling data show that the tidal factors of each wave band are relatively small because of the fault activity which conforms to the universal law that the tidal wave are global and the fault activity are local.The results of Yichang data shows that there exists abnormal tidal factor changes which overall results from data anomaly.The Huangbeiling and the Yichang results show together that the VAV03 program is applicable in both gravity and deformation tidal analysis.

About 48 hours before the Wenchuan Ms8.0 earthquake,significant gravity pulsation was observed at the Chengdu seismostation by using GS15 gravity meter.Comparing the earth tide data in different periods of time,it is demonstrated that the significant gravity pulsation are mainly affected by the external factors.32 tropical cyclones,the occurrence of Ms≥6.0 in China and Ms ≥7.0 in world were selected and statistically analyzed.It is shown that the rate of significant gravity pulsation during the occurrence of tropical cyclones is far more than those during before the occurrence of the earthquake,and the same gravity pulsation can be observed by even weaker tropical cyclones.So the significant gravity pulsation at the Chengdu seismostation is mainly affected from the tropical cyclones before the Wenchuan earthquake.

The bandwidth of JCZ-1T Ultra Broadband Seismometer covers whole observation band from high seismic frequency to solid tide. The observation condition to obtain stable low frequency data is suggested. The LP data from the vertical component and the horizontal component are processed to get the data of gravity and tilt solid tide. They are analyzed using Venedikov method. The data of a Indonesia large earthquake of MS 8.7 are processed, the PSD of Earth free oscillation is obtained. The instrument can take the integrated observation data of an earthquake event.

The gravity data at the stations of China observed before and after the Indonesia Ms8.7 earthquake occured on Dec.26,2004,are analyzed.On the basis of the monthly variation of the tidal factor of M2 wave and the response ratio to loading and unloading,the possible tendentious gravity change caused by the earthquake is discussed.The analysis shows that the tendentious change of the tidal factor of M2 wave caused by the Indonesia Ms8.7 earthquake is obvious but the trends are different for the stations in different place.

在实验的基础上,定量评估了飞机场产生的振动对重力观测影响的特征和空间分布,根据数值分析结果,提出了重力台站避开飞机场的最小距离为5 km.

概述了线性静电反馈的基本原理.LCR-G型重力仪进行线性静电反馈自动平衡的技术改造后,分辨率由原来的0.01×10-5ms-2提高到0.001×10-5ms-2,与DZCW1型智能化重力数据采集控制仪、计算机等一起组成便携式重力固体潮数字化数据采集系统.系统可进行数据实时处理、图像显示和数据传输.试验结果表明:系统性能稳定、可靠,操作方便、灵活、快捷,可用于监测重力场在时空上的连续变化.