Abstract：Using the gPhone gravimeter digital observation data recorded at Beijing seismic station, we detect spherical modes of 0S0-0S60 of the earth free oscillation stimulated by the M8.1 earthquake that occurred on April 25,2015 in Nepal. In our process, the method of power spectral density(PSD) is used．In comparison with the periods of free oscillations of the PREM model, the observed periods coincide well with the theoretical values.The results verify that gPhone gravimeter can detect the earth’s free oscillation.
ZHOU Jianglin,SHEN Ping. Detecting the Earth Free Oscillations Excited by the Nepal M8.1 Earthquake by Using gPhone Gravimeter at Beijing Seismic Station[J]. jgg, 2016, 36(9): 829-832.
