宮崎地殻変動観測所で観測された地球潮汐について

抄録

Tidal strains and tilts are investigated using the data of 3 extensometers, 3 watertube tiltmeters and 2 pairs of horizontal-pendulum tiltmeters installed at the Miyazaki Crustal Movement Observatory in the east coast of Kyushu, Japan. Successive analyses by means of the least-squares method with 30 or 60 days data are carried out by shifting the origin of analysis by a 5 or 10 days step. The data with disturbance due to rainfall are removed from the calculation. The results from 1 year data in 1987 show that the amplitudes of MZ and Ki constituents at each component vary over the standard errors, but their phases are stable with some exceptions . Deflections of the amplitude from the typical value in each component appear mainly at rainy season in spite of the removal of the disturbed data. But we cannot find relations on all deflective values to effects of rainfall