1.河北红山巨厚沉积与地震灾害国家野外观测研究站,河北 邢台055350
2.河北省地震局,河北 石家庄 050021
李小军(1981—),男,正高级工程师,硕士。主要从事地震专业仪器检测与观测场地评估研究。E-mail:16661056@qq.com
收稿:2024-04-19,
修回:2024-06-16,
纸质出版:2025-08-28
移动端阅览
李小军,尹康达,李冬圣等.红山地震台观测场地背景噪声模型的建立与特征[J].防灾减灾工程学报,2025,45(04):969-975.
LI Xiaojun,YIN Kangda,LI Dongsheng,et al.Establishment and Characteristics of Background Noise Model for Observation Site of Hongshan Seismic Station[J].Journal of Disaster Prevention and Mitigation Engineering,2025,45(04):969-975.
李小军,尹康达,李冬圣等.红山地震台观测场地背景噪声模型的建立与特征[J].防灾减灾工程学报,2025,45(04):969-975. DOI: 10.13409/j.cnki.jdpme.20240419001.
LI Xiaojun,YIN Kangda,LI Dongsheng,et al.Establishment and Characteristics of Background Noise Model for Observation Site of Hongshan Seismic Station[J].Journal of Disaster Prevention and Mitigation Engineering,2025,45(04):969-975. DOI: 10.13409/j.cnki.jdpme.20240419001.
为了合理评估地震台站观测场地等级以挖掘地震观测潜力,需要对地震台站背景噪声进行分析并获得对其特征的客观认识。使用两年的连续同址观测数据,对红山台背景噪声进行分析,提出天然背景噪声的提取方法。结合概率统计,给出台站综合背景噪声区间模型(CBNM)及其典型值,给出台站天然背景噪声区间模型(NBNM)及其典型值。研究发现CBNM的下边界在440 s至2 s的频率区间低于新低噪声模型(NLNM),NBNM的下边界在1 000 s至2 s的频率区间低于NLNM,在低于33 s的频段NBNM整体上比CBNM低几个分贝。结果表明了天然背景噪声提取方法的有效性,为修订由Peterson于1993年提出的全球噪声模型和建立符合我国区域特征的背景噪声模型提供了基础。
To reasonably evaluate the site classification of seismic stations and tap into their seismic observation potential
it is necessary to analyze the background noise of seismic stations and obtain an objective understanding of its characteristics. Using two years of continuous co-located observation data
this study analyzed the background noise at the Hongshan station and proposed a method for extracting natural background noise. Combining probability statistics
a comprehensive background noise model (CBNM) and its typical values for the station were established
along with a natural background noise model (NBNM) and its typical values. The results indicated that the lower boundary of the CBNM was below the new low noise model (NLNM) in the frequency range from 440 s to 2 s. The lower boundary of the NBNM was below the NLNM in the frequency range from 1000 s to 2 s. In the frequency bands below 33 s
the NBNM was overall several decibels lower than the CBNM. The results demonstrate the effectiveness of the natural background noise extraction method
providing a foundation for revising the global noise model proposed by Peterson in 1993 and for establishing background noise models tailored to the regional characteristics of China.
Bernard P . Historical sketch of microseisms from past to future [J]. Physics of the Earth & Planetary Interiors , 1990 , 63 ( 3/4 ): 145 - 150 .
Ardhuin F , Roland A . Coastal wave reflection, directional spread, and seismoacoustic noise sources [J]. Journal of Geophysical Research: Oceans , 2012 , 117 : 2011 JC007832.
Ardhuin F , Herbers T H C . Noise generation in the solid Earth, oceans, and atmosphere, from non-linear interacting surface gravity waves in finite depth [J]. Journal of Fluid Mechanics , 2013 , 716 : 316 - 348 .
Brune J N , Oliver J . The seismic noise of the Earth's surface [J]. Bulletin of the Seismological Society of America , 1959 , 49 ( 4 ): 349 - 353 .
Peterson J . Preliminary observations of noise spectra at the SRO and ASRO stations [R]. Reston : United States Department of Interior Geological Survey , 1980 .
Peterson J , Hutt C R , Holcomb L G . Test and calibration of the seismic research observatory [R]. Reston : United States Department of Interior Geological Survey , 1980 .
Agnew D C , Berger J . Vertical seismic noise at very low frequencies [J]. Journal of Geophysical Research Solid Earth , 1978 , 83 ( B11 ): 5420 - 5424 .
Li T M C , Ferguson J F , Herrin E , et al . High-frequency seismic noise at Lajitas, Texas [J]. Bulletin of the Seismological Society of America , 1984 , 74 ( 5 ): 2015 ‑ 2033 .
Breding D R . Seismic background noise at the norwegian regional seismic array [R]. Albuquerque : Sandia Nation Laboratories , 1987 .
Rodgers P W , Taylor S R , Nakanishi K K . System and site noise in the regional seismic test network from 0.1 to 20 Hz [J]. Bulletin of the Seismological Society of America , 1987 , 77 ( 2 ): 663 - 678 .
Given H K . Variations in broadband seismic noise at IRIS/IDA stations in the USSR with implications for event detection [J]. Bulletin of the Seismological Society of America , 1990 , 80 ( 6B ): 2072 - 2088 .
Peterson J . Observations and modeling of seismic background noise [R]. Reston : United States Department of Interior Geological Survey , 1993 .
Breckpot R , Marzec M K . ObsPy: A python toolbox for seismology [J]. Seismological Research Letters , 2010 , 81 ( 3 ): 530 - 533 .
Welch P D . The use of fast fourier transform for the estimation of power spectra: A method based on time averaging over short, modified periodograms [J]. IEEE Transactions on Audio and Electroacoustics , 1967 , 15 ( 2 ): 70 - 73 .
Li X J , Yang D K , Xie J B , et al . Applicability of the welch method for examining self-noise level parameters for broadband seismometers [J]. Geodesy and Geodynamics , 2015 , 6 ( 3 ): 233 - 239 .
Sleeman R , Melichar P . A PDF representation of the STS-2 self-noise obtained from one year of data recorded in the conrad observatory, Austria [J]. Bulletin of the Seismological Society of America , 2012 , 102 ( 2 ): 587 ‑ 597 .
李小军 , 谢剑波 , 杨大克 , 等 . 基于概率统计的甚宽频带地震计自噪声水平分析 [J]. 中国地震 , 2019 , 35 ( 1 ): 38 - 52 .
Li X J , Xie J B , Yang D K , et al . Analysis for self-noise level of the very broadband seismometer using probability statistic [J]. Earthquake Research in China , 2019 , 35 ( 1 ): 38 - 52 . (in Chinese)
Holcomb L G . A direct method for calculating instrument noise levels in side-by-side seismometer evaluations [R]. Reston : United States Department of Interior Geological Survey , 1989 .
0
浏览量
0
下载量
0
CSCD
关联资源
相关文章
相关作者
相关机构
苏公网安备32010202012147号
