Skip to main content
Earth, Planets and Space
Fig. 3 | Earth, Planets and Space

Fig. 3

From: Episode 4 (2019–2020) Nishinoshima activity: abrupt transitions in the eruptive style observed by image datasets from multiple satellites

Fig. 3

Time-series vitiations of the parameters relating to the eruptive situation during the Episode 4 activity of Nishinoshima. a Time-series variation of the nighttime 1.6-µm radiance observed by Himawari-8 (R1.6Mx). The estimated effusion rate based on the 1.6-µm IR method (Kaneko et al. 2021) is shown on the right side. b Time-series variation of the basal diameter of the pyroclastic cone and diameter of the summit vent based on the ALOS-2 images. c Time-series variation of the effusion rate estimated by the topographic method using the ALOS-2 images. d Time-series variation of the content percentage of pyroclastic rocks in the erupted volume. The upper ends of the orange columns show estimations that assume 50% of the volume of the Stage 2 lava flows to have a pyroclastic origin. e Time-series variation of SO2 mass in the Western Pacific area based on the ultraviolet–visible satellite observation (OMPS and TROPOMI) by the NASA Goddard Space Flight Center (NASA Goddard Space Flight Center 2021)

Back to article page