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首页> 外文会议>International Symposium on Land Subsidence >Permafrost seasonal surface changes revealed from Sentinel-1 InSAR time-series, Yamal peninsula
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Permafrost seasonal surface changes revealed from Sentinel-1 InSAR time-series, Yamal peninsula

机译：Modafrost季节性表面变化显示，Sentinel-1 Insar Time-Series，山楂半岛

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摘要

Widespread thawing of permafrost in the northern Eurasian continent causes severe problems for infrastructure and global climate. We test the potential of Sentinel-1 SAR imagery to enhance detection of permafrost surface changes in the Siberian lowlands of the northern Eurasian continent at the Yamal peninsula site. We used InSAR time-series technique to detect seasonal surface movements related to permafrost active layer changes. The satellite InSAR time-series analysis has detected continuous movements, subsidence in three zones, which have occurred during the time period from 2017 to 2018. Observed subsidence zones show up to 180mmyr~(-1) rates of seasonal active layers changes. These seasonal ground displacement patterns align well with lithology and linked to anthropogenic impact on the permafrost surface changes in the area. The results show that Sentinel-1 mission is of great importance for the longer-term monitoring of active layer thickening in permafrost regions. The combined analyses of the obtained InSAR time scries with additional field observations may support regular process monitoring as part of a global warming risk assessment.
机译：欧亚北方北部永久冻土的广泛解冻导致基础设施和全球气候的严重问题。我们测试Sentinel-1 SAR图像的潜力，以增强山楂大陆的西伯利亚大陆在山羊半岛网站的北方北方大陆的近霜表面变化的检测。我们使用了Insar时间序列技术来检测与永久性有源层的变化相关的季节性表面运动。卫星INSAR时间序列分析检测到连续运动，三个区域的沉降，这些区域发生在2017年至2018年期间发生的。观察到的沉降区显示出高达180mMyr〜（-1）季节性活性层的变化率。这些季节性地面位移图案与岩性良好齐全，与对该区域的永久冻土表面变化的人为影响有关。结果表明，Sentinel-1任务对于多年冻土区中的活性层增厚的长期监测非常重要。所获得的insar时间的组合分析与额外的现场观察可以支持常规过程监测，作为全球变暖风险评估的一部分。

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