This week, blue lava erupted at an unexpected volcano in Indonesia; the Papandayan volcano. Meanwhile, in Alaska, the Gareloi volcano explosively erupted for its first time in 8 years. And, in Japan, the alert level was raised at the Hokkaido-Komagatake volcano. Today's video will discuss these volcano news stories via a geologist, and list the 47 volcanoes actively erupting around the planet. Note: This video's thumbnail image shows a pre-2026 photo of blue "lava" at the Ijen volcano. Since I do not have a photo showing the same thing occurring in the last week at Papandayan (despite the fact this phenomenon did occur there), I am using this photo to represent it. Note: Papandayan is not erupting as of when this video was made, the blue "lava" is just molten sulfur which melted from elemental sulfur deposits. If you would like to support this channel, consider using one of the following links: (Patreon: http://patreon.com/geologyhub) (YouTube membership: https://www.youtube.com/channel/UCYeGh5VML5XPr5jYnzh3J6g/join) (Gemstone & Mineral Etsy store: http://prospectingarizona.etsy.com) (GeologyHub Merch Etsy store: http://geologyhub.etsy.com) Google Earth imagery used in this video: ©Google & Data Providers This video is protected under "fair use". If you see an image and/or video which is your own in this video, and/or think my discussion of a scientific paper (and/or discussion/mentioning of the data/information within a scientific paper) does not fall under the fair use doctrine, and wish for it to be censored or removed, contact me by email at [email protected] and I will make the necessary changes. Various licenses used in sections of this video (not the entire video, this video as a whole does not completely fall under one of these licenses) and/or in this video's thumbnail image (and this list does not include every license used in this video and/or thumbnail image): Public Domain: https://creativecommons.org/publicdomain/mark/1.0/ CC BY 3.0 NZ: https://creativecommons.org/licenses/by/3.0/nz/legalcode CC BY 4.0: https://creativecommons.org/licenses/by/4.0/legalcode Sources/Citations: [1] Source of Volcanic Explosivity Index (VEI) methodology and criteria: Newhall, C. G., and Self, S. (1982), The volcanic explosivity index (VEI) an estimate of explosive magnitude for historical volcanism, J. Geophys. Res., 87(C2), 1231–1238, doi:10.1029/JC087iC02p01231. Accessed / Read by Youtube.com/GeologyHub on Oct 5th, 2022. [2] VEIs, dates/years, composition, tephra layer name, DRE estimates, and bulk tephra volume estimates for volcanic eruptions shown in this video which were assigned a VEI 4 or larger are sourced from the LaMEVE database (British Geological Survey © UKRI), https://www2.bgs.ac.uk/vogripa/view/controller.cfc?method=lameve, Used with Permission. This source was used to cite the Hokkaido-Komagatake plinian eruption years & sizes. [3] U.S. Geological Survey [4] Hawaiian Volcano Observatory [5] Japanese Meteorological Agency (JMA) [6] Alaska Volcano Observatory [7] University of Alaska Fairbanks, Geophysical Institute [8] PVMBG (Indonesia) (Pusat Vulkanologi dan Mitigasi Bencana Geologi) (Indonesia) [9] Instiuto Geografico Nacional [10] Servicio Geológico Colombiano [11] IVAR (Instituto de Investigação em Vulcanologia e Avaliação de Riscos) [12] Instituto Geofísico Escuela Politécnica Nacional [13] Phivolcs [14] Sernageomin [15] Geonet (New Zealand) [16] Observatoire Volcanologique de Piton de la Fournaise (OVPF) (Réunion Island) [17] Rabaul Volcano Observatory [18] Vedur.is / Iceland Met Office [19] Tonga Geological Services [20] OVSICORI-UNA [21] Involcan [22] CIVISA (Azores) [23] Vanuatu Meteorology & Geo-Hazards Department 0:00 Great Sitkin Eruption 0:34 This Week's Top Stories 1:01 Gareloi Erupts 2:39 Hokkaido-Komagatake 3:57 Papandayan Blue "Lava" 5:11 List of Erupting Volcanoes