次声大气噪声对用于天体物理和地球物理应用的重力探测器的影响
Impact of infrasound atmospheric noise on gravity detectors used for astrophysical and geophysical applications
摘要：
大气中密度的变化产生波动的重力场，影响用于探测重力波和地球物理应用的重力应变计或重力梯度计。这项工作解决了大气局部重力噪声对这种探测器的影响，扩展了以前的分析。特别是，我们提出的影响所引入的建筑房屋的探测器，我们分析了当地的重力噪声抑制建造地下探测器。我们还提出了新的声谱和相关测量。所得结果对今后设计用于探测地震引起的瞬发重力扰动的重力波探测器和重力梯度计具有重要意义。
英文摘要：
Density changes in the atmosphere produce a fluctuating gravity field that affect gravity strainmeters or gravity gradiometers used for the detection of gravitational-waves and for geophysical applications. This work addresses the impact of the atmospheric local gravity noise on such detectors, extending previous analyses. In particular we present the effect introduced by the building housing the detectors, and we analyze local gravity-noise suppression by constructing the detector underground. We present also new sound spectra and correlations measurements. The results obtained are important for the design of future gravitational-wave detectors and gravity gradiometers used to detect prompt gravity perturbations from earthquakes.
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