同址观测洞体倾斜仪器背景噪声对比

North China Earthquake Sciences(2023)

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Abstract
通过功率谱密度法对崇礼台垂直摆、水平摆、水管仪3类倾斜仪正常动态及震扰、风扰、气压干扰时段观测数据进行分析,结果表明:① 各类倾斜仪能够较为清晰地记录到稳定的背景噪声;② 地震波会导致各类倾斜仪当日变化相应时段的背景噪声增大,且背景噪声增大幅度与地震震级成正比,随震级的增大,产生影响的频段范围也会相应增大;③ 风扰主要影响0.15~0.3 Hz频段范围,气压干扰主要影响低频部分.
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