Dingchang, ZhengSaygin, ErdincCummins, PhilGe, ZengxiMin, Zhaoxucipta, athanasiusYang, Runhai2021-10-081367-9120http://hdl.handle.net/1885/250566We analyze seismic ambient noise data recorded at a set of permanent and temporary stations across southeastern Tibet to image crustal structure. High-resolution phase velocity maps are presented based on Transdimensional Bayesian seismic ambient noise tomography. Seismic images exhibit more apparent horizontal heterogeneities and show more detailed information compared to previous studies based on traditional ambient noise tomography. As noted from the phase velocity image at 25 s, the rigid high velocity anomalies beneath the Sichuan Basin and the South China Fold System act as a blockage to crustal material expansion, and the distribution of velocity anomalies contributes to the interpretation of a surface clockwise rotation pattern. Our results imply a more complex distributed low-velocity zone rather than two isolated channels beneath SE Tibet.This work was supported by NSFC 41474048 and Chen Yong Academician Workstation of Yunnnan Province (Grant No. 2014IC007). Some calculations were performed on the Terrawulf cluster supported by AuScope and the Australian Geophysical Observing System (AGOS).application/pdfen-AU© 2016 Elsevier Ltd.Ambient noise tomographyTransdimensional Bayesian methodLow-velocity zoneSE Tibet201710.1016/j.jseaes.2016.11.0112020-11-23