北京昌平地震台TJ-1体积钻孔应变仪潮汐参数动态特征及其稳定性研究

STUDY ON THE DYNAMIC FEATURE OF TIDAL PARAMETERS OF TJ-1 DEFORMETER IN CHANG PING SEISMOSTATION AND ITS STABILITY

摘要: 介绍了北京昌平地震台TJ-1型钻孔体积应变仪1989年7月~2000年12月期间的观测结果,分析了潮汐响应函数的动态特征及其稳定性。由全序列观测数据调和分析所得:O₁波潮汐因子V_O1=0.7916±0.0128、相位滞后ΔΦ₀₁=1.9°;K₁1波潮汐因子V_k1=0.64 42±0.0088、相位滞后ΔΦ_k1=-4.2°;M₂波潮汐因子V_M2=0.6500±0.0038、相位滞后ΔΦM₂=-2.9°。液态地核振荡因子A=V_O1/V_k1=1.228,比理论值小6.5%。

Abstract: The data from Jul.of 1989 to Dec.of 2000 observed by the TJ-1 Borehole Volumetric Deformeter of Chang-Ping Seismostation are introduced,and the dynamic characteristics and stability of their tidal parameters are analyzed.The tidal parameters of O₁,K₁ and M₂ wave computed with all the data are as follows:V_O1=0.7916±0.0128,ΔΦ_O1=1.9°,V_K1=0.6442±0.0088,ΔΦ_K1=-4.2°,V_M2=0.6500±0.0038,ΔΦ_M2=-2.9°The oscillating factor of the liquid-state earth core is 1.228,which is 6.5% less than of the theory value.