Abstract About 48 hours before the Wenchuan \%M\%s8.0 earthquake, significant gravity pulsation was observed at the Chengdu seismostation by using GS15 gravity meter. Comparing the earth tide data in different periods of time, it is demonstrated that the significant gravity pulsation are mainly affected by the external factors.32 tropical cyclones, the occurrence of \%M\%s≥6.0 in China and \%M\%s ≥7.0 in world were selected and statistically analyzed. It is shown that the rate of significant gravity pulsation during the occurrence of tropical cyclones is far more than those during before the occurrence of the earthquake, and the same gravity pulsation can be observed by even weaker tropical cyclones. So the significant gravity pulsation at the Chengdu seismostation is mainly affected from the tropical cyclones before the Wenchuan earthquake.
Wei Jin,Hao Hongtao,Kang Kaixuan et al. GRAVITY DISTURBANCE OF HIGH FREQUCNCY AT CHENGDU SEISMOSTATION BEFORE WENCHUAN Ms8.0 EARTHQUAKE[J]. , 2009, 29(增刊): 15-19.
Wei Jin,Hao Hongtao,Kang Kaixuan et al. GRAVITY DISTURBANCE OF HIGH FREQUCNCY AT CHENGDU SEISMOSTATION BEFORE WENCHUAN Ms8.0 EARTHQUAKE[J]. jgg, 2009, 29(增刊): 15-19.
