Seasonal InSAR thaw subsidence and frost heave time series in central and western Spitsbergen, Svalbard

We used Sentinel-1 Synthetic Aperture Radar Interferometry (InSAR) to measure the ground surface displacements in the permafrost landscape of Svalbard. The InSAR products document thaw subsidence and frost heave related to the seasonal active layer thawing and freezing in 2017. The displacement time series were used to extract the timing of the seasonal thaw subsidence maxima at the regional scale.

We analysed three study areas in central and western Spitsbergen (78–79°N, 11–16°E): Adventdalen (ADV), Kapp Linné (KAP) and Ny-Ålesund (NYA). The dataset consists of one .csv file for each study area, which includes June–November 2017 InSAR displacement time series, the identified subsidence maxima and their corresponding Day of Year (DOY) for all the documented pixels. Details about processing and file attributes are described in the Readme pdf document included in the dataset folder.

本研究采用哨兵-1号（Sentinel-1）合成孔径雷达干涉测量（InSAR）技术，对斯瓦尔巴群岛永久冻土景观区域的地表位移进行了观测。该InSAR产品记录了2017年与季节活动层冻融过程相关的融沉与冻胀现象。通过地表位移时间序列，可提取区域尺度上季节融沉峰值出现的时间。

本研究选取斯匹次卑尔根岛中部与西部（北纬78°~79°、东经11°~16°）的3个研究区域：阿德文特伦谷（ADV）、林内角（KAP）与新奥尔松（NYA）。本数据集为每个研究区配备1个.csv格式文件，其中包含2017年6月至11月的InSAR地表位移时间序列、已识别的融沉峰值点，以及所有记录像元对应的年积日（DOY）。数据集处理流程与文件属性的详细说明，收录于数据集文件夹内的Readme.pdf文档中。