宜昌台三类地倾斜仪观测数据的对比研究  

A Comparative Study of the Observation Data from Three Kinds of Ground Tiltmeter at Yichang Station, China

作　　者：袁曲 许裕之[3] 吕品姬 张辉 王慧[1,2] 宋潇潇 YUAN Qu;XU Yuzhi;LU Pinji;ZHANG Hui;WANG Hui;SONG Xiaoxiao(Earthquake Agency of Hubei Province,Wuhan 430072,Hubei,China;Key Laboratory of Earthquake Geodesy,Institute of Seismology,China Earthquake Agency,Wuhan 430071,Hubei,China;School of Mathematics,Shandong University,Ji’nan 250100,Shandong,China)

机构地区：[1]湖北省地震局,湖北武汉430072 [2]中国地震局地震研究所(地震大地测量重点实验室),湖北武汉430071 [3]山东大学数学学院,山东济南250100

出　　处：《地震工程学报》2019年第6期1536-1544,共9页China Earthquake Engineering Journal

摘　　要：研究采用宜昌地震台水管倾斜仪、VP型垂直摆倾斜仪、VS型垂直摆倾斜仪三类地倾斜仪的观测数据,进行潮汐响应函数和非潮汐参数和地震响应对比。结果显示:(1)三类倾斜仪M 2波潮汐因子NS向普遍小于EW向,NS向容易受局部观测环境的影响;三类倾斜仪EW向潮汐速率略大于NS向,VS仪漂移最大,其次VP仪,而水管仪三者中漂移最小。总的来说,仪器的稳定性和精度方面,水管仪最好,VP倾斜仪次之,垂直摆最低。(2)三类倾斜仪易受观测环境干扰,数据产生不同程度噪声,由于不同仪器的性能差异,造成三类观测数据不同步,为鉴别真实的地壳形变信息,应对观测数据做去干扰处理,将不同观测的物理量互相验证,对数据质量较差的观测系统应进行合理化改造。Based on observation data from three kinds of ground tiltmeter at Yichang Seismic Station(water tube tiltmeter,VP vertical pendulum tiltmeter,and VS vertical pendulum tiltmeter),China,tidal response functions,non-tidal parameters,and seismic responses were compared.Results showed that:(1)the M 2 wave tide factor for three kinds of tiltmeter in the N-S direction was generally smaller than that in the E-W direction,because the former was easily affected by the local observation environment.Tide rates of three kinds of tiltmeter in the E-W direction were slightly larger than those in the N-S direction.The daily drift of the VS tiltmeter was the largest,followed by that of the VP tiltmeter and the water tube pendulum.(2)The three kinds of tiltmeter were all easily influenced by the observation environment.The data generated different noise,and the performance difference of the three instruments caused synchronous observations.To distinguish the real information of crustal deformation,interferences in the observation data should be removed in order to mutually verify the physical quantities.

关 键 词：固体潮 响应函数 漂移 观测精度 地震响应 

分 类 号：P315.63[天文地球—地震学]