Analysis on the observation data of DSQ water pipe inclinometer and VP vertical pendulum in Wuzhishan Station, Hainan Province
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摘要: 通过对五指山台DSQ水管倾斜仪和VP垂直摆的观测数据统计，精度内在质量以及同震形变波分析，认为连续率、漂移量、内精度资料质量指标均符合形变要求规范。水管倾斜仪和VP垂直摆对不同震中距的地震记录存在较大差异：①当震中距较小时，水管仪无同震响应，VP垂直摆同震记录清晰；②当震中距＞6000 km时，两种仪器记录能力相当。Abstract: 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.
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图 1 五指山台站构造位置及仪器布设图
Figure 1. Structure location and instrument layout of Wuzhishan Station
图 2 五指山台DSQ水管倾斜仪（a）、VP垂直摆倾斜仪（b）精度曲线
Figure 2. Accuracy curves of DSQ water pipe inclinometer (a), VP vertical pendulum inclinometer (b) at Wuzhishan Station
图 3 五指山台DSQ水管倾斜仪（左）、VP垂直摆（右）同震响应对比图
Figure 3. Comparison of co-seismic response of DSQ water pipe inclinometer (left) and VP vertical pendulum (right) at Wuzhishan Station
图 4 2016年8月24日水管仪与VP垂直摆同震响应对比曲线
Figure 4. Comparison curves of co-seismic response between plumbing instrument and VP vertical pendulum on August 24, 2016
表 1 五指山台两类倾斜仪运行基本情况统计表
Table 1. Statistics of the basic operating conditions of the two types of inclinometers at Wuzhishan Station
仪器名称 测项分量 采样率/s 连续率/% 完整率/% 基线长度 缺记原因 DSQ水管倾斜仪 北南分量 60 97.88 97.12 12.3 m 停电、数采、前置盒 东西分量 97.88 97.18 38 m 停电、数采、前置盒 VP垂直摆倾斜仪 北南分量 1 95.16 89.44 （折合摆长）12 cm 调零、超量程 东西分量 95.16 93.74 调零、停电 
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表 2 DSQ水管倾斜仪、VP垂直摆年漂移量 （单位：10−3″）
Table 2. Annual drift of DSQ water pipe inclinometer and VP vertical pendulum （unit：10−3″）
年份 DSQ水管倾斜仪 VP垂直摆 NS向 EW向 NS向 EW向 2015 −56.20 108.35 589.53 −296.67 2016 −343.42 −176.01 1611.75 −502.46 2017 −2401.65 −196.91 1644.88 298.22
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