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

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.