Azores Terceira Volcano Update; Fresh Magma at 2 Miles Depth, Alert Level Raised

Magma is now believed to have ascended to 2 miles below sea level. This is part of a recent change which has occurred at a portion of the Terceira volcano in the Azores, resulting in its alert level being raised. Today's video creates a model to discuss what exactly has changed, and gives broader context about the volcano's unrest which began in 2021. This will be analyzed through the perspective of a geologist.

Note: This video's thumbnail image does NOT display the area where magma is shallowest (below ground) as highlighted in today's video.

As a reminder: There is absolutely no reason to panic; the unrest at Terceira is still fairly weak despite the presence of at depth magma. Other unrest episodes have occurred beforehand, and most of these did not result in eruptions.

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 geologyhubyt@gmail.com 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/

Sources/Citations:
[1] CIVISA
[2] IVAR (Instituto de Investigação em Vulcanologia e Avaliação de Riscos)
[3] U.S. Geological Survey
[4] Andrew T. Calvert, Richard B. Moore, John P. McGeehin, Antonio M. Rodrigues da Silva, Volcanic history and 40Ar/39Ar and 14C geochronology of Terceira Island, Azores, Portugal, Journal of Volcanology and Geothermal Research, Volume 156, Issues 1–2, 2006, Pages 103-115, ISSN 0377-0273, https://doi.org/10.1016/j.jvolgeores.2006.03.016. (https://www.sciencedirect.com/science/article/pii/S0377027306001314)
[5] Nunes, João & Calvert, A. & Medeiros, Sara & Lima, Eva & Pereira, Fernando & Costa, Manuel & Barcelos, Paulo & Carvalho, M.. (2014). Geological mapping of the central area of Terceira Island (Azores, Portugal): Associated volcanostratigraphy, ages and genetic implications on the Malha-Balcões-Chamusca lava caves system. Comunicacoes Geologicas. 101. 283-288.
[6] Alaska Volcano Observatory
[7] University of Alaska Fairbanks, Geophysical Institute
[8] 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.

0:00 Terceira Volcano
1:00 Alert Levels
1:40 Terceira's Unrest
2:48 Geologic Model
3:26 Shallowest Magma Location?

Видео Azores Terceira Volcano Update; Fresh Magma at 2 Miles Depth, Alert Level Raised канала GeologyHub