Analysis on the observation data of DSQ water pipe inclinometer and VP vertical pendulum in Wuzhishan Station, Hainan Province

Based on the statistical data, change trend analysis, accuracy, and co-seismic deformation wave analysis of DSQ water pipe inclinometer and VP vertical pendulum of Wuzhishan Station, it is considered that the quality index of continuity, drift, and internal accuracy data meet the requirements of deformation observation. The water pipe inclinometer and the VP vertical pendulum have great differences in the seismic records of different epicenter distances: ① When the epicenter distance is small, the water pipe instrument has no co-seismic response, and the VP vertical pendulum has the clear co-seismic record; ② When the epicenter distance is greater than 6000 km, the two instruments have a similar recording capability.