| 巴里坤测震台背景噪声分析 |
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| 引用本文： | 张剑锋,张录,周康云,候塞因·赛麦提,木巴拉克·江布尔拜. 巴里坤测震台背景噪声分析[J]. 地震地磁观测与研究, 2022, 43(3): 52-59. DOI: 10.3969/j.issn.1003-3246.2022.03.008 |
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| 作者姓名： | 张剑锋 张录 周康云 候塞因·赛麦提 木巴拉克·江布尔拜 |
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| 作者单位： | 1. 中国新疆维吾尔自治区 841000 库尔勒地震监测中心站;2. 中国新疆维吾尔自治区 839000 哈密地震监测中心站 |
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| 摘 要： | 选取2017—2021年巴里坤测震台数字观测资料，对近2 000 h波形数据，运用Welch平均周期法，计算得到该台台基背景噪声与噪声功率谱密度（PSD）及1—20 Hz地动噪声均方根值（RMS）。通过数据对比分析，认为2018—2020年，受G7、G575高速公路施工、人为干扰等影响，巴里坤测震台台基噪声水平不断升高，2019年噪声值达到最大。同时，对比巴里坤测震台在高速公路通行前后的背景噪声可知，2021年日、夜噪声差值高于2017年，且夏季高于冬季。
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| 关 键 词： | 巴里坤测震台 背景噪声 噪声功率谱密度 |
Analysis of background noise of Barkol Seismic Station |
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| ZHANG Jianfeng,ZHANG Lu,ZHOU Kangyun,Housaiyin·SAIMAITI,Mubalake·JIANGBUERBAI. Analysis of background noise of Barkol Seismic Station[J]. Seismological and Geomagnetic Observation and Research, 2022, 43(3): 52-59. DOI: 10.3969/j.issn.1003-3246.2022.03.008 |
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| Authors: | ZHANG Jianfeng ZHANG Lu ZHOU Kangyun Housaiyin·SAIMAITI Mubalake·JIANGBUERBAI |
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| Affiliation: | 1. Korla Earthquake Monitoring Center Station, Xinjiang Uygur Autonomous Regionk 841000, China;2. Hami Earthquake Monitoring Center Station, Xinjiang Uygur Autonomous Region 839000, China |
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| Abstract: | Based on the digital observation data of Barkol Seismic Station from 2017 to 2021,Welch mean period method was used to calculate the seismic background noise,noise power spectral density (PSD) and root mean square value (RMS) of 1-20 Hz ground motion noise of the station for nearly 2 000 h waveform data.Through comparative analysis of data,it is found that the seismic noise level of Barkol seismic station keeps rising and reaches the maximum in 2019,due to the construction of G7 and G575 expressway and human interference from 2018 to 2020.At the same time,compared with the background noise before and after the expressway traffic,it can be seen that the noise difference between day and night in 2021 is higher than that in 2017 and higher in summer than that in winter. |
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| Keywords: | Barkol Seismic Station background noise noise power spectral density |
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