Yunnan-Myanmar and its surrounding areas are the areas directly affected by the collision of the Eurasian Plate and the Indian Plate. In view of the uneven distribution of GPS stations in Yunnan and Myanmar, this paper employs the method of regionally weighted interpolation. In areas with a high concentration of GPS stations, a combination of Voronoi cell weighting function and Gaussian function weighting is utilized, while in regions with sparse GPS coverage, a combination of Voronoi cell weighting function and quadratic function weighting is employed. Utilizing the rigid-body movement uniform strain model, we calculate the horizontal strain rates of the crust in Yunnan-Myanmar and adjacent areas, followed by an in-depth analysis of model performance and the activity of primary faults. The results show that: (1) We found that Yunnan Myanmar strain has obvious boundary characteristics. (2) Upon scrutinizing the model, it was ascertained that the model delineated in this study possesses an expansive search range, enabling it to yield more precise outcomes, particularly in regions characterized by the disparate distribution of GPS stations; (3) Through the analysis of the profiles of horizontal GPS velocity field and maximum shear strain rates of the main faults in the study area, we found that the direction of the maximum shear strain rate is consistent with the direction of the main faults in the study area, and that the slip and maximum shear strain rate of the major faults increase and decrease along the tectonic direction.

中文翻译：

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GPS测量数据区域加权插值研究滇缅及周边地区浅层地壳形变

滇缅及周边地区是受欧亚板块与印度板块碰撞直接影响的地区。针对云南和缅甸GPS站点分布不均匀的情况，本文采用区域加权插值的方法。在GPS站点密集的地区，采用Voronoi小区加权函数和高斯函数加权相结合，而在GPS覆盖稀疏的地区，采用Voronoi小区加权函数和二次函数加权相结合。利用刚体运动均匀应变模型，计算了滇缅及邻区地壳的水平应变率，并对模型性能和原生断裂活动性进行了深入分析。结果表明：（1）我们发现云南缅甸株具有明显的边界特征。 (2) 经过仔细研究模型，可以确定本研究中描述的模型具有广泛的搜索范围，使其能够产生更精确的结果，特别是在 GPS 站点分布不均的地区； (3) 通过对研究区主要断裂的水平GPS速度场剖面和最大剪应变率剖面分析发现，最大剪应变率的方向与研究区主要断裂的方向一致。研究区主要断层的滑移率和最大剪应变率沿构造方向增减。