Supplementary dataset for Cai et al., (2024): Characterizing the Kinematics of Active Rock Glaciers in Daxue Shan, Southeastern Tibetan Plateau, Using SAR Interferometry and Generalized Boosted Modeling

This dataset encompasses the annual mean creep velocities of rock glaciers in Daxue Shan, located in the Southeastern Tibetan Plateau, between 2019 and 2020. These velocities have been meticulously estimated by integrating InSAR observations from both ascending and descending tracks with the Surface Parallel Flow (SPF) model. Initially, we utilized the Small Baseline Subset (SBAS) InSAR technique to map the movement of rock glaciers between January 2019 and December 2020. This was achieved by analyzing Sentinel-1A SAR imagery from both ascending and descending orbits. Following this, we merged the Line of Sight (LOS) measurements from the two tracks with the enhancements of the SPF model, which enabled us to calculate the three-dimensional creeping velocities of the rock glaciers with higher precision. In the final step, we projected the calculated 3D displacement vectors in a direction that is parallel to the slope of the terrain. This was accomplished through a process of vector addition, ensuring an accurate representation of the rock glaciers' movements.本数据集涵盖了青藏高原东南部大雪山（Daxue Shan）区域内2019至2020年间石冰川 (rock glaciers) 的年平均蠕动速率。该数据集的速率数据通过融合升轨与降轨轨道的合成孔径雷达干涉测量 (Interferometric Synthetic Aperture Radar, InSAR) 观测数据，并结合表面平行流模型 (Surface Parallel Flow, SPF)，经精细估算得到。研究初期，我们采用小基线集 (Small Baseline Subset, SBAS) 合成孔径雷达干涉测量技术，通过分析升轨与降轨轨道的哨兵1号A合成孔径雷达 (Sentinel-1A SAR) 影像，完成了2019年1月至2020年12月间石冰川的运动制图。在此基础上，我们将两条轨道的视线向 (Line of Sight, LOS) 观测数据与表面平行流模型的优化算法相结合，从而以更高精度计算得到石冰川的三维蠕动速率。最后，我们通过矢量叠加运算，将计算得到的三维位移矢量投影至与地形坡面平行的方向，以精准表征石冰川的运动特征。