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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。
Linfen, Houma seismograph station, vertical tilt tilt digital observation data often recorded to unknown causes of tremor wave, the impact of short period of 2-3 days, long 10 days to several months, the main frequency band focused on 0.01-0.08 Hz, The observed amplitude (2-6) × 10-3 ".Analysis shows that the high frequency tremor waves mainly come from the typhoon in the western Pacific, the offshore and the Taiwan Strait of China, and the small part of them comes from the pre-earthquake deformation, and the reason is unknown .