中文摘要：

利用北京、沈阳、格尔木、乌什等4个台站型gPhone重力仪的观测资料，检测日本9．0级大地震的地球自由振荡，将检测结果与sG以及HBl模型进行对比，结果表明0S0-0S48基频自由振荡的实测周期值与sG以及HBl模型的理论值基本一致，从而证实gPhone重力仪能有效地检测出地球自由振荡信号，同时也从相应高频范围内表明了gPhone重力仪秒采样观测资料的可靠性。检测还发现了0S2、0S3的谱线分裂现象。

英文摘要：

Utilizing the gravity data of the gPhone gravimeters （at Beijing, Shenyang, Golamd, Wushi stations） during the Ms9.0 Japan earthquake that broke out in 2011-03-11, we succeed in detecting the Earth＇ s flee oscillations from 0S0 to 0Sas, in addition, we observed the spectra splitting of the oS2, 0S3. Compared with the HB1 model, the observed period of oSo-oS48 coincide with the results from super conducting gravimeter and the HB1 model. Thus it is confirmed that the gPhone gravimeter can effectively detect the Earth＇ s free oscillations, and to a certain extent, that the sample data by second are reliable.