Simultaneous geomagnetic monitoring with multiple SQUIDs and fluxgate sensors across underground laboratories
Simultaneous geomagnetic monitoring with multiple SQUIDs and fluxgate sensors across underground laboratories
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DOI：
10.1051/e3sconf/20161202003
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
S. Henry;E. P. D. Borgo;C. Danquigny;B. Abi
中科院分区：
文献类型：
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作者：
S. Henry;E. P. D. Borgo;C. Danquigny;B. Abi
在2014年春季和秋季的两个为期几周的时间里，我们在LSBB隧道网络内的三个位置使用三轴SQUID磁强计监测地磁场的波动。在水流点C和GAS廊道处的测量补充了胶囊中永久[SQUID]2系统的测量。磁波动的频谱在三个位置之间变化很大。这些测量提供了一个独特的数据集，以研究地下SQUID监测地磁信号梯度的潜力，从而研究大地电磁效应和由于周围岩石含水量变化而可能产生的季节性效应。我们还比较了SQUID和磁通门系统的测量，并报告在博尔比地下实验室的磁通门测量。
For two periods of several weeks duration in spring and autumn 2014, we monitored fluctuations in the geomagnetic field using 3-axis SQUID magnetometers at three locations within the LSBB tunnel network. Measurements at the water flow point C, and the GAS gallery supplemented the measurements by the permanent [SQUID]2 system in the Capsule. The frequency spectra of the magnetic fluctuations varied considerably between the three locations. These measurements have provided a unique data set to investigate the potential of underground SQUIDs to monitor the gradient of geomagnetic signals and thus investigate magnetotelluric effects and possible seasonal effects due to changes in the water content of the surrounding rock. We also compared the measurements of a SQUID and fluxgate system, and report on fluxgate measurements at the Boulby Underground Laboratory.