The Deadly & Deceptively Large Volcanic Eruption of Mexico's El Chichón Volcano скачать в хорошем качестве

The Deadly & Deceptively Large Volcanic Eruption of Mexico's El Chichón Volcano

On March 28th, 1982, the El Chichón volcano within Mexico unexpectedly exploded, beginning a climactic eruption that would end up pulverizing 150 square kilometers of terrain. This sadly included 9 entire villages, and 1900 people. Yet, while El Chichón's 1982 eruption was one of the largest to occur during the 20th century, if you were to have looked at this very eruption in ice cores, it would have appeared to be 4 times larger. This video discusses why El Chichón's 1982 eruption was unusually rich in sulfur dioxide gas. Thumbnail Photo Credit: Schaefer, J. R. G., Alaska Volcano Observatory / Alaska Division of Geological & Geophysical Surveys, https://avo.alaska.edu/image/view/84141. This image was overlaid with text, and then overlaid with GeologyHub made graphics (the image border & the GeologyHub logo). Note: This video's thumbnail image displays the 2008 eruption of Alaska's Okmok volcano. I could not find a public domain image of El Chichón's 1982 eruption, and as a result instead decided to show what part of its plinian eruption may have looked like via displaying a completely different plinian eruption. If you would like to support this channel, consider using one of the following links: (Patreon:   / geologyhub  ) (YouTube membership:    / @geologyhub  ) (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/publicdom... CC BY 4.0: https://creativecommons.org/licenses/... Sources/Citations: [1] Shinohara, H. (2008), Excess degassing from volcanoes and its role on eruptive and intrusive activity, Rev. Geophys., 46, RG4005, doi:10.1029/2007RG000244. [2] Sigl, M., Toohey, M., McConnell, J. R., Cole-Dai, J., and Severi, M.: Volcanic stratospheric sulfur injections and aerosol optical depth during the Holocene (past 11 500 years) from a bipolar ice-core array, Earth Syst. Sci. Data, 14, 3167–3196, https://doi.org/10.5194/essd-14-3167-..., 2022. CC BY 4.0. [3] 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/c..., Used with Permission [4] 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    / geologyhub   on Oct 5th, 2022. 0:00 El Chichon Eruption 1:19 Sulfate Spikes 2:36 Explosive Eruption Ratio 3:22 Anhydrite 4:11 Volcano Model