摘要
对西安基准地震台PET型重力仪的数字化观测进行分析,就记录情况、记录波形、资料的内在精度、仪器的稳定性、观测资料的干扰因素等方面进行了较深入研究。结果显示:西安基准地震台PET型重力仪器运行性能较好,记录质量较高,能清晰地记录到日变固体潮,年变曲线连续完整,观测精度较高;仪器受温度、气压等影响小,相关系数几乎为零;为观测资料在地震前兆分析及预报研究中排除干扰、提取映震信息奠定良好基础。
The seismic digital type PET gravimeter observation were analyzed at Xi＇ an seismic station, including the record , waveform, data of the inherent accuracy and the stability of the instrument, observation data of the interference factors. The results showed that the PET type gravity instrument performed very well, the quality of the data is higher and it can recorded clearly the earth tide. The instrument is almost not affected by temperature and pressure, the correlation coefficient is almost zero.
出处
《高原地震》
2015年第2期35-40,共6页
Plateau Earthquake Research
基金
中国地震局监测
预测
科研三结合课题(编号:142701)<西安基准地震台PET型重力仪观测资料干扰因素分析>资助项目
关键词
PET型重力仪
观测精度
干扰因素
固体潮
PET type gravity instrument
Observation accuracy
Inference factor
Earth tide
