Super-high-resolution aerial imagery, digital surface model and 3D point cloud of Lake Basins on the Northern Seward Peninsula, Alaska (West, subset 01)

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 10 cm, as well as photogrammetric point clouds in RGB and NIR at 8.93 pts/m² and 3.18 pts/m², respectively. This dataset covers approximately 18.30 km² of drained thermokarst lake basins on the northern Seward Peninsula in Alaska, with all images collected on 9 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.

作为2021年由阿尔弗雷德·魏格纳研究所（Alfred Wegener Institute）主导的Perma-X航空科考项目的一部分，我们采用德国航空航天中心（German Aerospace Center）研发的模块化航空相机系统（Modular Aerial Camera System，MACS），采集了冻土景观的超高分辨率多光谱影像。基于上述影像，我们经摄影测量处理得到了空间分辨率为10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，同时生成了RGB和近红外（NIR）格式的摄影测量点云，其点密度分别为8.93个点/平方米与3.18个点/平方米。本数据集覆盖了阿拉斯加州苏厄德半岛北部约18.30平方千米的退化热融湖塘流域，所有影像均采集于2021年7月9日。该超高分辨率数据集可用于构建冻土地貌清单的精细化训练数据集，同时可为热融作用与热侵蚀过程的变化检测提供基准基线，并支持将野外实测数据尺度上推至低分辨率卫星观测数据。