The alert level was just raised at Portugal's Furnas volcano in the Azores Island chain, which has not erupted in approximately 400 years. Yet, in my opinion, I am not concerned about this development. Today's video will explain why I interpret the volcano's recent earthquake swarm to be unimpressive, and unlikely to be part of a more significant episode of volcanic unrest. 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): CC BY 4.0: https://creativecommons.org/licenses/by/4.0/legalcode Sources/Citations: [1] Brown, S.K., Jenkins, S.F., Sparks, R.S.J. et al. Volcanic fatalities database: analysis of volcanic threat with distance and victim classification. J Appl. Volcanol. 6, 15 (2017). https://doi.org/10.1186/s13617-017-0067-4, CC BY 4.0. This source was used to cite the number of direct fatalities in various volcanic eruptions, but not for Ilopango, and only partially cited for Raung & Krakatau. This means every mention of those volcanoes throughout today's video. [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 [3] 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. [4] CIVISA [5] U.S. Geological Survey [6] Alaska Volcano Observatory [7] University of Alaska Fairbanks, Geophysical Institute [8] Jeffery, Adam & Gertisser, Ralf & O'Driscoll, Brian & Pacheco, Jose & Whitley, S & Pimentel, Adriano & Self, Stephen. (2016). Temporal evolution of a post-caldera, mildly peralkaline magmatic system: Furnas volcano, São Miguel, Azores. Contributions to Mineralogy and Petrology. 171. 42. 10.1007/s00410-016-1235-y. CC BY 4.0. 0:00 Furnas Volcano 0:34 Azores Volcano Alert Levels 2:04 Prior 2026 Pico Swarm 3:22 Possible Lineament