Abstract:Taking Lushan earthquake as an example, we compare the spectral characteristics of seismic signals recorded by gravimeter and seismometer in the same seismic stations. The results show that the P-waves recorded by the two instruments are basically the same when the epicenter distance is greater than 2 000 km, but there is a slight difference in magnitude. The results of P-wave spectrum analysis indicate that the gPhone gravimeter cannot record some high frequency information, and the main frequency range of seismic waves recorded by the gPhone gravimeter and CTS-1 seismometers are quite concentrated in the 0-0.3 Hz range when the epicenter distance is greater than 2 000 km.
FAN Wenhua,SHEN Chongyang,TAN Hongbo et al. A Comparison between the Spectral Characteristics of Seismic Signals Recorded by Gravimeter and Seismometer: Taking Lushan 7.0 Earthquake for Example[J]. jgg, 2017, 37(4): 411-415.