Three-year time series of TerraSAR-X backscatter intensity and interferometric coherence for lakes in the Lena River Delta, Siberia, links to GeoTIFF images

The goal of this study was to examine the potential of a unique X-band SAR dataset to monitor ice phenology and bedfast ice on a number of thermokarst lakes in the Siberian Arctic. Three-year repeat-pass TSX time series with high temporal (11 days) and spatial (10 m) resolution were used. Two different parameters derived from SAR imagery were employed in the analysis: backscatter intensity and 11-day interferometric coherence. In situ ice thickness measurements were collected at 14 locations from a sample of 10 lakes in April 2015. A region of interest (ROI) was created around each in situ ice thickness measurement location as a circle with a diameter of approximately 10 pixels. We provide extracted backscatter and coherence for all the ROIs as georeferenced .tif files for the entire time series.

本研究旨在探究一套独特的X波段合成孔径雷达（X-band SAR）数据集，在西伯利亚北极地区多座热融湖塘中监测冰物候与固底冰的应用潜力。本研究采用了时间分辨率为11天、空间分辨率为10米的三年TerraSAR-X（TSX）重复轨道时间序列数据。分析过程中使用了两类从SAR影像提取的参数：后向散射强度与11天干涉相干性。2015年4月，研究团队在10个采样湖塘的14个点位完成了原位冰厚测量。针对每个原位冰厚测量点位，我们以该点位为中心构建了直径约10个像素的圆形感兴趣区域（ROI）。本数据集提供了全时间序列中所有感兴趣区域的后向散射与相干性提取结果，格式为地理配准的TIFF（.tif）文件。