Permafrost disturbance in Central Yamal along the Bovanenkovo railway line and thermokarst lakes, link to files in different formats@en

The data set presents results from geospatial analyses of a region in Central Yamal, Western Siberia, which was affected by the construction of the Bovanenkovo railway line and by high Retrogressive Thaw Slumps (RTS) occurrence in consequence of the extremely warm and wet year 2012. A change detection was performed using high resolution optical satellite images from 2010 (GeoEye-1) and 2013 (QuickBird). The preprocessing of the satellite data (orthorectification and atmospheric correction) was performed by and is described in Dvornikov et al., 2016. The degree of disturbance change from 2010 and 2013 around the railway line was classified into three major disturbance levels - low, medium and high, based on the width of disturbance and magnitude of change over the course of three years. A kernel density raster file illustrates RTS distribution. The highest disturbance along the railway can be observed, where the RTS activity is the highest in 2013.本数据集呈现西西伯利亚亚马尔中部某区域的地理空间分析成果，该区域受博瓦涅科夫铁路（Bovanenkovo railway line）建设影响，且因2012年异常暖湿的气候出现了大规模热融滑塌（Retrogressive Thaw Slumps, RTS）。研究采用2010年GeoEye-1与2013年QuickBird获取的高分辨率光学卫星影像开展变化检测。卫星数据的预处理流程（正射校正与大气校正）已由Dvornikov等人于2016年完成，并在其相关研究中予以详述。基于三年间扰动范围与变化幅度，铁路沿线2010至2013年的扰动变化程度被划分为低、中、高三个主要扰动等级。数据集附带核密度栅格文件，用于展示热融滑塌的空间分布。2013年铁路沿线扰动程度最高的区域，同时也是当年热融滑塌活动最为剧烈的区域。