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On the suitability of 1 s geophone for ambient noise measurements in the 0.1-20Hz frequency range: experimental outcomes

机译:关于1 s地震检波器在0.1-20Hz频率范围内的环境噪声测量的适用性:实验结果

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Following the ongoing debate about suitability of short-period sensor for seismic noise measurements at frequencies lower than 1 Hz, in this study we compare recordings from two different seismometers (Guralp CMG-3ESPC and Mark L4C-3D) installed side by side in the GeoForschungsZentrum laboratory. The comparison carried out in terms of Power Spectral Density and coherency analysis shows an excellent agreement between the short-period and the broad-band recordings in the frequency band 0.2-20 Hz. Therefore, this result highlights that with a calibrated short-period sensor one can obtain the same results that would be obtained by using a broad-band seismometer in the band of engineering interest.
机译:在就短周期传感器是否适合在低于1 Hz的频率下进行地震噪声测量进行辩论之后,在本研究中,我们比较了并排安装在GeoForschungsZentrum中的两个不同地震仪(Guralp CMG-3ESPC和Mark L4C-3D)的记录实验室。在功率谱密度和相干性分析方面进行的比较表明,在0.2-20 Hz频带的短周期和宽带记录之间有很好的一致性。因此,这一结果突出表明,使用经过校准的短周期传感器,可以获得与在工程关注的频带中使用宽带地震仪获得的结果相同的结果。

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