Abstract Based on the WGM2012 Bouguer gravity anomaly data, we obtain the effective elastic thickness Te distribution of the lithosphere in northeast China. We use the wavelet multi-scale decomposition method to invert the lateral difference of different deep geological bodies in the region. We analyze the relationship between deep lithosphere structure and seismicity based on the seismicity characteristics of the key seismic monitoring areas(northern section of Yishu fault zone, Zhalantun area, Changbaishan area). The results show that the Te of northern section of Yishu fault zone is about 15.5 km, and the rock has weak deformation resistance. The lateral density difference of shallow part is obvious, and the focal depth is shallow. The Te of Zhalantun area is about 24.5 km, and the rock has strong deformation resistance. The lateral density difference of deep part is large, and the focal depth is deep. The Te of Changbaishan area is about 11.5 km and is relatively active due to the hot mantle dynamics under the subduction effect of western Pacific plate.
CHANG Jinlong,CHEN Shi,LI Dongni et al. Study on the Effective Elastic Thickness and Structural Implication of the Lithosphere in Northeast China[J]. jgg, 2024, 44(3): 325-330.
CHANG Jinlong,CHEN Shi,LI Dongni et al. Study on the Effective Elastic Thickness and Structural Implication of the Lithosphere in Northeast China[J]. jgg, 2024, 44(3): 325-330.