台风“利奇马”对湖州地震台VP型倾斜仪观测数据的扰动分析

Disturbance Analysis of Typhoon"Lekima"to Observed Data of VP Tiltmeter of Huzhou Seismic Station

基于小波分析方法,提取台风“利奇马”对湖州地震台VP型倾斜仪观测数据的高频扰动发现,扰动信号呈“纺锤状”,与台风中心风速、台风距离的相关性低;扰动信号主要是海浪到达近海,冲击海底和海岸产生振动,经过完整的地壳传导而被观测仪器记录到的信号。

Based on the wavelet analysis method,the high-frequency disturbance of typhoon"Lekima"to the VP tiltmeter observation data of Huzhou Seismic Station is extracted.It is found that the disturbance signal is"spindle-like"and has low correlation with the typhoon center wind speed and typhoon distance.The disturbance signal is mainly the signal recorded by the observation instrument after the waves reach the offshore,impact the seabed and coast to generate vibration,and complete crustal conduction.