Daily coordinate time series for GPS stations on bedrock for Antarctica and the sub Antarctic sector, 1995-2021, reprocessed by the GIANT-REGAIN project

In Antarctica, solid earth deformation can be attributed to various processes, such as surface load variations mainly caused by present-day (elastic deformation) and past ice-mass changes (glacial isostatic adjustment) or tectonic processes. Several studies have already used geodetic GPS to derive bedrock motion in Antarctica, but they were limited to specific regions or time periods. The GIANT-REGAIN project (Geodynamics In ANTarctica based on REprocessing GNSS dAta Initiative) aimed to reprocess all available GNSS data in Antarctica from 1995 to 2021 consistently. This dataset presents the results of the reprocessing effort. The observational GPS data were processed individually by four processing centers: TU Dresden (TUD), Ohio State University (OSU), Newcastle University (NEWC), and University of Tasmania (UTAS), utilizing different geodetic GNSS software and analysis strategies. The coordinate time series were then combined to form a final time series for each GPS station. […]

在南极洲，固态地壳变形可归因于多种过程，如主要由现代（弹性变形）及历史冰体变化（冰川均衡调整）或构造过程引起的地表载荷变化。已有数项研究利用大地测量GPS技术推导南极洲的基底运动，但这些研究多局限于特定区域或时间段。GIANT-REGAIN项目（基于重处理GNSS数据的南极洲地动力学研究计划）旨在对1995年至2021年期间南极洲所有可用的GNSS数据进行一致性重处理。本数据集展示了重处理工作的成果。观测GPS数据由四个处理中心分别独立处理：德累斯顿工业大学（TUD）、俄亥俄州立大学（OSU）、纽卡斯尔大学（NEWC）和塔斯马尼亚大学（UTAS），它们使用了不同的地理测量的GNSS软件和分析策略。随后，将这些坐标时间序列合并，形成了每个GPS站点的最终时间序列。