New progress has been made in the study of upper mantle anisotropy in the multi-subduction zone around the Sulawesi Sea

Associate Researcher Cao Lingmin, Researcher Zhao Minghui, and Researcher Qiu Xuelin, Key Laboratory of Marginal Sea and Ocean Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, in collaboration with Dr.

In the subduction zone, the study of upper mantle anisotropy is the key to understanding the stress distribution and subduction dynamics of the subduction zone

The Sulawesi Sea area in Southeast Asia is adjacent to the Pacific plate to the east and India - Australia plate to the

Studies have shown that the fast wave direction of the TNTI station above the Halmahera island arc is northeast - southwest ( NE - SW ), inclined to the direction of the trench and slab subduction .

The research results provide a new seismological basis for the in-depth understanding and understanding of the upper mantle deformation under the interaction of multiple subduction systems around the Sulawesi Sea

The research was jointly funded by the National Natural Science Foundation of China, the Pilot Project B, and the major special projects introduced by the Southern Ocean Science and Engineering Guangdong Laboratory (Guangzhou) talent team

Related paper information: https://doi.

Figure 1 SKS split results of all stations in the study

Figure 2 The flow model of the mantle wedge above the Molucca Sea plate, the mantle under the plate, and the mantle edge of the slab undergoing two -way subduction