天津地区VP宽频带倾斜仪与宽频带地震仪数据融合分析  

Data Fusion Analysis of Vertical Pendulum Broadband Tiltmeter and Broadband Seismometer in Tianjin

作　　者：朱冰清[1,2] 王建国 郭巍[1] 赵黎明[1] 王伟涛 ZHU Bingqing;WANG Jianguo;GUO Wei;ZHAO Liming;WANG Weitao(Tianjin Earthquake Agency,19 Youyi Road,Tianjin 300201,China;Institute of Geophysics,CEA,5 South-Minzudaxue Road,Beijing 100081,China)

机构地区：[1]天津市地震局,天津市300201 [2]中国地震局地球物理研究所,北京市100081

出　　处：《大地测量与地球动力学》2021年第7期759-764,共6页Journal of Geodesy and Geodynamics

基　　金：中国地震局地震科技星火计划(XH20002);中国地震局“三结合”课题(202001005,202001006)。

摘　　要：以天津蓟县地震台VP宽频带倾斜仪采集的典型地震同震波形及同址地震仪数据为研究对象,获取和识别天津地区VP宽频带倾斜仪同震波形的频谱特征、频带响应及震相成分,并基于地震前兆台网观测数据跟踪分析平台统计不同区域VP宽频带倾斜仪的幅度与震级,利用经验公式拟合振幅与震级的关系,实现蓟县地震台VP宽频带倾斜仪和宽频带地震仪面波最大振幅转换。结果表明,VP宽频带倾斜仪记录的频带丰富,两者在波形上具有较高的一致性。In this paper,the typical coseismic waveforms collected by vertical pendulum broadband tiltmeter at Jixian seismic station in Tianjin and the data from the seismometer at the same site are studied.We obtain and identify the spectrum characteristics,frequency response and phase composition of coseismic waveforms of vertical pendulum broadband tiltmeter in Tianjin.Based on the precursory network observation data tracking and analysis platform,we count the amplitude and magnitude of vertical pendulum broadband tiltmeter in different regions,and fit the relationship between amplitude and magnitude by empirical formula,and realize the maximum amplitude conversion of surface wave of vertical pendulum broadband tiltmeter and broadband seismometer at Jixian seismic station.The results show that the vertical pendulum broadband tiltmeter has rich recording frequency band and high consistency with broadband seismometer in waveform.

关 键 词：VP宽频带倾斜仪 宽频带地震仪 时频分析 震相识别 振幅关系 

分 类 号：P315[天文地球—地震学]