Fig. 2From: Simple empirical method for estimating lava-effusion rate using nighttime Himawari-8 1.6-µm infrared imagesRelationship between effusion rate for lava and 1.6-µm radiance. a 2017 Nishinoshima activity. b 2017 Nishinoshima and 2015 Raung activities. The regression line was obtained from the 2017 Nishinoshima dataBack to article page