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Effective elastic thickness over the Chinese mainland and surroundings estimated from a joint inversion of Bouguer admittance and coherence
Physics of the Earth and Planetary Interiors ( IF 2.4 ) Pub Date : 2020-04-01 , DOI: 10.1016/j.pepi.2020.106456
Zhezhe Lu , Chun-Feng Li , Shuang Zhu , Pascal Audet

Abstract The effective elastic thickness (Te) of the lithosphere reflects the long-term flexural strength and provides mechanical information about the evolution and deformation of the lithosphere. The Chinese mainland and its surroundings (CMS) comprise sharply contrasting tectonic domains and involve a complex evolution history. In this paper, we apply a joint inversion of real admittance and coherence calculated using the continuous planar wavelet transform to estimate the spatial variations of Te in the CMS based on topography and Bouguer gravity anomaly data. A probabilistic Bayesian inference method is used to show the statistical distribution of the model parameters in specific cases, demonstrating the accuracy and stability of the joint inversion. Old stable cratons and basins (e.g., Indian Plate, Tarim Basin, Junggar Basin and Lower Yangtze) mostly correspond to high Te (>50 km), whereas reactivated Mongolian Plateau, eastern North China Craton, Cathaysian Block, continental margins and young oceanic lithospheres tend to display low Te (
更新日期:2020-04-01
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