Super-high-resolution aerial imagery, digital surface model and 3D point cloud of Ketik fire scar, Alaska (subset 09)


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 36.17 pts/m² and 12.62 pts/m², respectively. This dataset covers approximately 6.66 km² of the Ketik fire scar in Alaska, with all images collected on 27 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.

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Metadata Access
Creator Rettelbach, Tabea ORCID logo; Nitze, Ingmar ORCID logo; Grünberg, Inge ORCID logo; Hammar, Jennika; Schäffler, Simon; Hein, Daniel; Gessner, Matthias; Bucher, Tilman; Brauchle, Jörg ORCID logo; Hartmann, Jörg ORCID logo; Sachs, Torsten ORCID logo; Boike, Julia ORCID logo; Grosse, Guido ORCID logo
Publisher PANGAEA
Publication Year 2024
Rights Creative Commons Attribution 4.0 International;
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 430 data points
Discipline Earth System Research
Spatial Coverage (-156.783W, 71.287S, -156.783E, 71.287N); Barrow, Alaska, USA
Temporal Coverage Begin 2019-07-27T20:03:52Z
Temporal Coverage End 2019-07-28T02:31:52Z