Super-high-resolution aerial imagery, digital surface model and 3D point cloud of the Northern Noatak Valley, Alaska (subset 03)@en

As part of the Perma-X airborne campaign led by the Alfred Wegener Institute in 2021, 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 27.18 pts/m² and 9.22 pts/m², respectively. This dataset covers approximately 12.96 km² of the northern Noatak Valley in Alaska, with all images collected on 2 July 2021. 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.本数据集源自阿尔弗雷德·魏格纳研究所（Alfred Wegener Institute）2021年主导的Perma-X机载科考项目：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。基于这些影像，研究人员通过摄影测量处理得到了空间分辨率为7厘米的四波段正射影像（蓝、绿、红、近红外波段）与数字表面模型，同时获取了RGB和近红外（NIR）格式的摄影测量点云，其点密度分别为27.18个点/平方米与9.22个点/平方米。本数据集覆盖阿拉斯加北部诺阿塔克山谷（Noatak Valley）约12.96平方千米的区域，所有影像均采集于2021年7月2日。这款超高分辨率数据集可用于构建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基线，同时支持将野外测量结果尺度上推至低分辨率卫星观测数据。