Super-high-resolution aerial imagery, digital surface model and 3D point cloud of Anaktuvuk River Fire Scar (subset 01)@en

As part of the ThawTrend-Air airborne campaign led by the Alfred Wegener Institute in 2019, we collected super-high-resolution multispectral imagery of permafrost landscapes with the Modular Aerial Camera System (MACS), developed by the German Aerospace Center. From these images, we photogrammetrically processed four-band orthophotos (blue, green, red, near-infrared) and digital surface models at a spatial resolution of 7 cm, as well as photogrammetric point clouds in RGB and NIR at 24.86 pts/m² and 8.60 pts/m², respectively. This dataset covers approximately 5.81 km² of the Anaktuvuk River fire scar in Alaska, with all images collected on 22 July 2019. This super-high-resolution dataset provides opportunities for generating detailed training datasets of permafrost landform inventories, a baseline for change detection for thermokarst and thermo-erosion processes, and upscaling of field measurements to lower-resolution satellite observations.本数据集隶属于2019年由阿尔弗雷德·魏格纳研究所（Alfred Wegener Institute）主导的ThawTrend-Air航空科考项目，研究团队借助德国航空航天中心（German Aerospace Center）研发的模块化航空相机系统（Modular Aerial Camera System, MACS），采集了永久冻土景观的超高分辨率多光谱影像。基于上述影像，研究团队通过摄影测量流程处理生成了空间分辨率为7厘米的四波段正射影像（涵盖蓝、绿、红、近红外四个波段）与数字表面模型；同时还生成了RGB与近红外（NIR）格式的摄影测量点云，点密度分别为24.86 点/平方米与8.60 点/平方米。本数据集覆盖阿拉斯加阿纳克图沃克河火疤区域约5.81平方千米的范围，所有影像均采集于2019年7月22日。该超高分辨率数据集可用于生成永久冻土地貌清单的精细化训练数据集，作为热喀斯特与热侵蚀过程变化检测的基准，同时可实现野外测量数据向低分辨率卫星观测数据的尺度上推。