Characteristics of the lithospheric bottom interface and seismicity in eastern China and its vicinity

The deep gravity anomaly is obtained from Bouguer anomaly using the techniq ue of wavelet transform separation. Constrained by authentic prior informat ion from other geophysical methods and using series solution of spheric har monics,a joint inversion is carried out with respect to the deep gravity an omaly in eastern China and the adjacent areas. The distribution pattern of the lithospheric bottom interface is revealed. The characteristics of the l ithospheric bottom interface and distribution pattern of strong earthquakes are also discussed. The study shows that eastern China and its vicinity is characterized by zoning with respect to geomorphic distribution, various g eophysical fields and lithosphere structure. This behavior is likely relate d to the depth variation of the lithosphere. The difference in the lithosph eric bottom interface pattern affects the movement of the lithosphere and a series of geological processes. The distribution of strong earthquakes is also closely related to the lithospheric bottom interface pattern and tecto nic environment.