地震地磁观测与研究2024，Vol.45Issue(1)：101-107,7.DOI:10.3969/j.issn.1003-3246.2024.01.014
山西垂直摆倾斜仪背景噪声分析
Analyses of background noise of vertical pendulum tiltmeter in Shanxi
摘要
Abstract
Using the observation data of the vertical pendulum tiltmeter in the normal period of Shanxi region,this study calculates the Power Spectral Density(PSD)and Signal-to-Noise Metric(SNM)to analyze and discuss the characteristics of the normal background observations.The results indicate that the daily PSD of undisturbed observation data does not vary significantly.Minute-sampling observation data can reflect a PSD distribution up to 8.3 mHz,while second-sampling observation data can reflect a PSD distribution up to 0.5 Hz.The noise levels of the VS and VP vertical pendulum observation data are consistent at the Linfen Station;two sets of instruments have higher background noise levels,while four sets have lower background noise levels.Instruments with lower noise levels produce smooth observation curves with clear solid tides and operate stably;instruments with higher noise levels have many spikes and are not smooth in their observation curves.The phenomenon is affected not only by the observation environment but also primarily by the instrument themselves.关键词
山西地区/垂直摆倾斜仪/功率谱密度/背景噪声Key words
Shanxi region/vertical pendulum tiltmeter/power spectral density/background noise引用本文复制引用
高翠珍,王晓霞,高彦,薛锦明,薛生瑞..山西垂直摆倾斜仪背景噪声分析[J].地震地磁观测与研究,2024,45(1):101-107,7.基金项目
中国地震局监测、预报、科研三结合课题(项目编号:3JH-202301010) （项目编号:3JH-202301010）
山西省地震局青年项目(项目编号:SBK-2308) （项目编号:SBK-2308）
