摘要
运用潮汐计算模型及固体潮汐数字化观测结果,计算了固体潮汐参数,并对计算结果进行了对比。结果表明:整点和加密采样(10 min)两种采样方法除计算的中误差有一些差别外,对固体潮汐因子的影响不大。同时用辅助气压观测及首都圈体应变观测数据计算了体应变日异常频次,并与观测台站附近的小震活动进行了对比,讨论了远震及震源区地震活动与固体潮汐数字化观测结果间的关系。
Based on the model of earth tide and the observed tide data, we have calculated the tidal parameters by use of the hour- and 10-minute-data and compared them between each other. It shows that the both tidal factors and phase lags of M2 waves are generally close to each other,besides there is little difference in errors. We also proposed and calculated the index of Daily Anomaly Count （DAC） of the body strain by use of the observation data with the supplementary atmosphere observation, and then compared the index with small seismic activities near the observation sites in Beijing area. Finally, the relationship between far earthquakes, weak earthquakes near focal area and the calculated DAC is discussed.
出处
《大地测量与地球动力学》
CSCD
北大核心
2005年第3期86-90,共5页
Journal of Geodesy and Geodynamics
基金
"十五"科技部攻关项目(2004BA601B-03-02)
地震科学联合基金项目(103077)
关键词
固体潮汐
数字化
潮汐参数
地震活动
观测数据
earth tide, digital technique, tidal parameters, seismic activity,observations data
