ANALYSIS OF BACKGROUND NOISE LEVEL OF KORLA VP VERTICAL PENDULUM TILTMETER
Observation data of three sets of VP broadband vertical pendulum tiltmeter at Korla sta-tion,Ruoqiang station and Qiemo station are selected,and the seismic noise level in the seismic fre-quency band is calculated by using the power spectral density analysis method.The results show that the background noise level of the instrument at Korla station is low due to the excellent observation conditions of the cavern and the small interference of the observation environment around the cavern.The noise level of the three sets of VP-type broadband vertical pendulum tiltmeter does not show ob-vious regularity in spatial distribution,but it shows the consistency that the NS component record is better than the EW component.
万方数据
维普
