Abstract Permafrost is extremely sensitive to variance in external hydrothermal conditions. InSAR has advantages in monitoring surface deformation with decent temporal and spatial resolution as well as millimeter precision. In particular, the StaMPS-InSAR method can remove the disturbances of inaccurate digital elevation model (DEM), atmospheric delays and spatiotemporal decorrelation for an accurate estimation of temporal surface deformation. In this paper, a set of ascending and descending Sentinel-1 imageries spanning from March 2017 to June 2018 were acquired and processed by StaMPS-InSAR in order to investigate dynamic changes of permafrost in Wudaoliang Basin, Qinghai-Tibet Plateau (QTP). The results revealed that significant seasonal changes of permafrost, namely subsidence (thawing) in summer and uplift (freezing) in winter, can be observed throughout the Wudaoliang region. This study shows the StaMPS-InSAR analysis on Sentinel-1 datasets has great potential in regional permafrost investigation.

中文翻译：

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StaMPS-InSAR揭示的青藏高原五道梁盆地多年冻土季节性变形

摘要 多年冻土对外部热液条件的变化极为敏感。InSAR 在监测表面变形方面具有优势，具有良好的时空分辨率以及毫米级精度。特别是，StaMPS-InSAR 方法可以去除不准确的数字高程模型 (DEM)、大气延迟和时空去相关的干扰，以准确估计时间表面变形。为了研究青藏高原五道梁盆地多年冻土的动态变化，本文利用StaMPS-InSAR采集并处理了2017年3月至2018年6月的一组上升和下降的Sentinel-1影像。结果表明，多年冻土季节变化显着，即夏季沉降（解冻），冬季隆升（冻结），整个五道梁地区都可以看到。本研究表明，对 Sentinel-1 数据集的 StaMPS-InSAR 分析在区域永久冻土调查中具有巨大潜力。