Thermal infrared and photogrammetric data collected by small unoccupied aircraft system for hydrogeologic analysis of Oh-be-joyful Creek, Gunnison National Forest, Colorado, August 2017

The U.S. Geological Survey collected low-altitude airborne thermal infrared data and visual imagery via a multirotor, small unoccupied aircraft system deployed from...美国地质调查局（U.S. Geological Survey）借助从……部署的多旋翼小型无人驾驶航空器系统，采集了低空机载热红外数据与可见光影像。