川滇地区岩石圈三维应力场模型

该数据集为利用GPS速度场及震源机制解进行约束获得的川滇地区岩石圈三维应力场模型数据。利用川滇地区岩石圈结构断裂信息，构建了区域岩石圈变形3D有限元模型，融合已有文献发表的区域GPS速度和项目组最新观测资料给出模型速度边界约束，同时利用项目组给出的区域中小地震震源机制解和地幔对流作用对模型应力场进行约束，构建了川滇地区现今地壳变形和应力场模拟综合模型。该模型数据集可用于进一步研究川滇地区大震孕震背景、岩石圈构造演化及青藏高原扩展等重要科学问题。

This dataset comprises 3D lithospheric stress field model data of the Sichuan-Yunnan region, obtained via constraints using GPS velocity fields and focal mechanism solutions. Based on the lithospheric structure and fault information of the Sichuan-Yunnan region, a 3D finite element model of regional lithospheric deformation was developed. Velocity boundary constraints for the model were derived by integrating regional GPS velocities published in existing literature and the latest observational data from the project team. Additionally, the model's stress field was constrained using focal mechanism solutions of moderate and small earthquakes in the region and mantle convection effects provided by the project team, thereby constructing a comprehensive simulation model of the current crustal deformation and stress field in the Sichuan-Yunnan region. This model dataset can be utilized for further research on key scientific issues including the seismogenic background of large earthquakes in the Sichuan-Yunnan region, lithospheric tectonic evolution, and the expansion of the Tibetan Plateau.