High precision photogrammetry data of Lascar volcano acquired by UAS survey in 2017 and 2020

Here we present a high precision photogrammetry dataset of Lascar summit crater, which acquired by unmanned aircraft system (UAS) in Nov 2017 and Feb 2020 respectively, and reconstructed by Structure-from-Motion (SfM) method. In which, optical orthomosaic and DEM (Digital Elevation Model) were processed in Agisoft Metashape (version 1.7.3), preprocessing of thermal data was conducted in Thermoviewer (v3.0.7) and thermal mosaic was generated by Pix4Dmapper (v4.5.6). All data was projected to global coordinates (WGS 1984 UTM Zone 19 South). Thermal orthomosaic was georeferenced to 2020 orthomosaic in ArcMap (version 10.8). Employed UAS and SfM-derived product are given as follows:

(1) 2017 orthomosaic (7.7 cm/pix) and DEM (15.6 cm/pix): DJI Mavic Pro Platinum 

(2) 2020 orthomosaic (7.0 cm/pix) and DEM (13.7 cm/pix): DJI Phantom 4 RTK

(3) 2020 additional orthomosaic (5.3 cm/pix): DJI Mavic 2

(4) 2020 thermal orthomosaic (spatial resolution: 45.0 cm/pix, radiometric resolution: 0.04 degree/pix): FLIR Tau 2 640 attached to DJI Phantom 4 RTK