Fig. 6
From: Volcanic plume measurements using a UAV for the 2014 Mt. Ontake eruption
Summit area and the plume photographed in the air (3285 m) during one of the MultiGAS flight in June 2015 at the NW edge of the green line in Fig. 4. The image was taken by the camera onboard the UAV, looking down approximately toward the east. Two triangles on the left and right correspond to Kengamine and Otaki Peaks, respectively. The plume was flowing down approximately eastward as indicated with orange arrow