[1]巫立华,张宝剑,黄鹤凌,等.福建地区地震背景噪声特征分析[J].华南地震,2026,46(01):9-17.[doi:10.13512/j.hndz.2026.01.02]
 WU Lihua,ZHANG Baojian,HUANG Heling,et al.Analysis of Seismic Ambient Noise Characteristics in Fujian Region[J].,2026,46(01):9-17.[doi:10.13512/j.hndz.2026.01.02]
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福建地区地震背景噪声特征分析()

华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
46
期数:
2026年01期
页码:
9-17
栏目:
地震科学研究
出版日期:
2026-01-31

文章信息/Info

Title:
Analysis of Seismic Ambient Noise Characteristics in Fujian Region
文章编号:
1001-8662(2026)01-0009-09
作者:
巫立华张宝剑黄鹤凌戴丽金赵文波
福建省地震局,福州 350003
Author(s):
WU LihuaZHANG BaojianHUANG HelingDAI LijinZHAO Wenbo
Fujian Earthquake Agency , Fuzhou 350003, China
关键词:
背景噪声噪声水平功率谱密度概率密度函数
Keywords:
Ambient noiseNoise levelPower spectral densityProbability density function
分类号:
P315.7
DOI:
10.13512/j.hndz.2026.01.02
文献标志码:
A
摘要:
为提高福建地区背景噪声特性认识和福建预警台网观测数据质量,选取福建地震预警台网120个测震台站2023年全年连续波形数据,应用地震噪声功率谱密度(PSD)、概率密度函数(PDF)及均方根值(RMS)分析方法,评估福建地区地震噪声水平和背景噪声特征。结果表明:福建预警测震台网整体噪声水平以Ⅱ级为主,空间分布呈现一定区域规律,沿海人口密集、工业活动频繁区域的台站噪声水平高于中西部山区台站。噪声频谱特征分析表明:低频段(<0.1Hz)噪声主要受温湿度扰动及气流影响,噪声PSD值在-170dB至-130dB之间波动,部分台站水平通道噪声明显高于垂直通道,建议加强地震计防护措施和基准面校准;中频段(0.1~1Hz)噪声与海洋活动密切相关,其PSD值较全球最低噪声模型(NLNM)高约20dB,且卓越频率(0.3Hz)较全球最低噪声模型偏移0.1Hz,冬季双频微震能量略高于夏季;高频段(>1Hz)噪声以人文噪声为主导,昼夜变化显著,通过远离人口密集的城镇或者山洞安装可以有效地降低台站周围干扰源。
Abstract:
To enhance the understanding of ambient noise characteristics in Fujian region and the quality of obser vation data of Fujian Earthquake Early Warning Network,the continuous waveform data of 120 seismic stations in Fujian Earthquake Early Warning Network in 2023 were selected, and the seismic noise level and background noise characteristics in Fujian region were evaluated by using the analysis methods of seismic noise power spectral density(PSD),probability density function(PDF)and root mean square(RMS). The results show that the overall noise level of Earthquake Early Warning Network is mainly level II,and the spatial distribution shows a certain re gional pattern. The noise level of stations in coastal areas with dense population and frequent industrial activities is higher than that of stations in central and western mountainous areas. The analysis of noise spectrum characteristics shows that the noise in the low frequency band(< 0.1 Hz)is mainly affected by temperature and humidity distur bance and airflow, and the noise PSD value fluctuates between?170 dB and?130 dB. The noise of the horizontal channel of some stations is significantly higher than that of the vertical channel. It is suggested to strengthen the pro tection measures of seismometers and the calibration of datum plane. The mid-frequency(0.1-1 Hz)noise is closely related to marine activities,with a PSD value about 20 dB higher than the global lowest noise model(NLNM). The dominant frequency(0.3 Hz)is 0.1 Hz offset from the global lowest noise model,and the dual-frequency microseis mic energy in winter is slightly higher than that in summer. The high-frequency(>1 Hz)noise is dominated by hu man noise,with significant diurnal variations. Installing away from densely populated towns or cave installation can effectively reduce interference sources around the station.

参考文献/References:

[1] Weaver R L. Geophysics. Information from seismic noise[J]. Science,2005,307(5715):1568-1569
[2]韩忠东.地震背景噪声信号的特征分析与应用方法研究[D].青岛:山东科技大学,2007.
[3] Peterson J. Observations and modeling of seismic background noise[R]. Albuquerque,NM:USGS,1993:93?322.
[4] McNamara D E,Boaz R I. Seismic noise analysis system us?ing power spectral density probability density functions:A stand-alone software package[R]. Reston,Virginia:USGS, 2005.
[5] Sleeman R. Towards an automated quality control manager for the virtual European broadband seismograph network (VEBSN)[J]. Orfeus Newsletter,2007,7(1):5-17
[6]巫立华,戴丽金,张丽娜,等.地震台站勘选测试数据处理软件设计与应用[J].华南地震,2021,41(2):40-49.
[7] Casey R,Templeton M E,Sharer G,et al. Assuring the Quali?ty of IRIS Data with MUSTANG[J]. Seismological Research Letters,2018,89(2A):630-639.
[8] Berger J,Davis P,Ekstrm G. Ambient Earth noise:A survey of the Global Seismographic Network[J/OL]. Journal of Geo?physical Research Solid Earth,2004,109(B11)[2025-02-12]. https://doi.org/10.1029/2004JB003408.
[9] Bogdan G,Cristian N,Dragos T. Analysis of seismic noise in the Romanian-Bulgarian cross-border region[J].Journal of Ss?mology,2018(22):1275-1292.
[10] Tarigan K,Sinambela M,Simanullang A T. The characteris?tics influence of the seismic signal noise using spectral anal?ysis[J].Journal of Physics Conference Series,2018(1116):1742-6596.
[11] Huang B,Xue M,Guo Z,et al. Exploring the deep ocean sin?gle-frequency microseisms southwest of Japan in Northern Philippine Sea[J/OL].Geophysical Research Letters,2022, 49[2025-02-12]. https://doi.org/10.1029/2021GL097444
[12]王芳,王伟涛,龙剑锋,等.中国大陆地区宽频带地震台网台基噪声特征[J].地震学报,2019,41(5):569-584.
[13]杨龙翔,王志铄,贾漯昭,等.河南省测震台网背景噪声特征分析[J].大地测量与地球动力学,2015,35(3):543-546.
[14]安全,张荣莲,贾鹏,等.加速度计与地震计同台基记录背景噪声特征对比研究[J].华南地震,2025,45(04):34-41.
[15]唐浩,徐金银,何秋菊,等.宁夏区域地震观测背景噪声特征[J].大地测量与地球动力学,2024,44(11):1199-1206.
[16]谢江涛,林丽萍,赵敏,等.四川地区地震背景噪声特征分析[J].地震学报,2021,43(5):533-550.
[17]郑定昌,庞卫东,闵照旭,等.云南地区背景噪声特征分析[J].地震研究,2011,34(2):201-206.
[18]王俊,徐戈,孙业君.江苏省区域地表背景噪声特性的分析[J].地震研究,2009,32(2):155-160.
[19] McNamara D E,Buland R P. Ambient Noise levels in the Continental United States[J]. BSSA,2004,94(4):1517-1527.
[20] Stein Seth,Michael W. An introduction to seismology earth?quakes and earth structure[M]. Malden,MA:Blackwell Pub?lishing,2003.
[21] Bormann P. New manual of seismological observatory prac?tice(IASPEI)[M]. Potsdam:Deutsches GeoForschungsZen?trum GFZ,2002.
[22]中国地震标准化技术委员会.地震台站观测环境技术要求:GB/T 19531.3-2004[S].北京:中国标准出版社,2004.
[23]中国地震局监测预报司.测震学原理与方法[M].北京:地震出版社,2017.

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备注/Memo

备注/Memo:
收稿日期:2025-04-30
基金项目:福建省地震局科研专项(面上)资助项目(M202401);中国地震局监测司地震监测预警业务骨干专项任务资助项目(CEA-JCYJ-202501029)联合资助。
作者简介:巫立华(1985-),男,工程师,主要从事地震监测方面的工作。E-mail:uuhua_w@163.com
更新日期/Last Update: 2026-02-03