通过对黑龙江省测震台站台基背景噪声数据的计算和分析，得到当前各参评台站台基背景噪声地动速度均方根值（RMS）、台基噪声等级以及有效测量动态范围，并对存在突出问题的PSD曲线进行分析。通过计算各台站功率谱密度，得出台站在不同频段受干扰的情况。分析认为，黑龙江省29个台站环境地噪声水平为Ⅰ级，碾子山地震台环境地噪声水平为Ⅱ级（受当地采矿业机械震动影响），七台河地震台环境地噪声水平为Ⅳ级；除七台河地震台观测动态范围小于130 dB，其他台站均大于130 dB。
Based on the calculation and analysis of the background noise of the seismic stations in Heilongjiang, the root mean square values (RMS) of the ground motion velocity of the background noise at the stations, the noise level at the stations, and the effective measurement dynamic range are obtained; the PSD curves with outstanding problems are analyzed. Finally, through the calculation of the power spectral density of each station, the interference situations of the station in different frequency bands are obtained. Analysis shows that the environmental noise level of 29 stations in Heilongjiang Province is Level Ⅰ, the environmental noise level of the Nianzishan Seismic Station is Level Ⅱ (Affected by local mining machinery vibration), and the environmental noise level at the Qitaihe Seismic Station is level Ⅳ. Except for the dynamic range observed by the Qitaihe Seismic Station, which is less than 130 dB, all other stations are greater than 130 dB.
2023,44（5）: 65-73 收稿日期：2023-01-30
DOI：10.3969/j.issn.1003-3246.2023.05.009
基金项目：黑龙江省地震局深源地震创新团队项目
作者简介：徐建权(1985-),男,黑龙江省哈尔滨市人,本科,工程师,现主要从事地震监测及系统运维工作。E-mail:xujianquan2008@126.com
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