【摘要】 临汾、侯马地震台水管仪、垂直摆倾斜数字化观测资料常记录到不明原因的震颤波,影响时段短则2—3天,长则10天到数月,主频段集中在0.01—0.08 Hz,观测振幅(2—6)×10-3″。分析认为,该高频震颤波主要来自西太平洋台风、近海及中国台湾海峡的海风干扰,少部分来自远震震前形变,极少部分原因不明。更多还原

【Abstract】 Unexplained vibration wave occurred in digital observation records of seismic plumbing instrument and vertical pendulum tiltmeter at Linfen and Houma seismic stations. The duration of the interference may be as shot as 2-3 days, or as long as 10 days to several months. The main frequency of the interface is concentrated in the 0.01-0.08 Hz,with observed amplitude of(2-6) × 10-3 second. The analysis results indicate that the high frequency vibration wave is mainly caused by the western Pacifi c typhoon and the sea breeze from offshore and China Taiwan strait, a few comes from distant earthquake deformation before the teleseismic activate,and rare part is with unknown reason.更多还原