a In the last week, the number of seismic events at one of the planet's most historically deadly volcanoes increased to record levels, with 11,000 such events occurring on a single day. And, there appears to be a new intrusion of magma pushing its way up through the glacier covered Nevado del Ruiz volcano in Colombia. As a result, its alert level was raised from yellow to orange for the first time in slightly more than a decade. This video will discuss the ongoing situation and what might happen next at this volcano.

Important Nevado del Ruiz links:
[1] Nevado del Ruiz Volcano Hazard Map: [ Ссылка ]
[2] Unidad Nacional para Gestión del Riesgo de Desastres: [ Ссылка ]
[3] Servicio Geológico Colombiano: [ Ссылка ]

Thumbnail Photo Credit: iStock.com, Nicolas Socadagui, [ Ссылка ]. This image was then overlaid with text in addition to GeologyHub made graphics.

Note: This video's thumbnail image shows an April 2022 eruption photo of Nevado del Ruiz.

Correction: The diagram showing the "plumbing" of the Nevado del Ruiz volcano shown from 2m08s to 2m20s is licensed under a CC BY 4.0 license.

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Google Earth imagery used in this video: ©Google & Data Providers

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:
Public Domain: [ Ссылка ]
CC BY 2.0: [ Ссылка ]
CC BY 4.0: [ Ссылка ]

Sources/Citations:
[1] Servicio Geológico Colombiano
[2] Source: Graphic/Illustration/Chart/Image from page 21 in a scientific paper by: Wright, Thomas L. and Pierson, Thomas C. (1992). Living with volcanoes (DJVU format), USGS Circular 1073
[3] Vargas, C., Koulakov, I., Jaupart, C. et al. Breathing of the Nevado del Ruiz volcano reservoir, Colombia, inferred from repeated seismic tomography. Sci Rep 7, 46094 (2017). [ Ссылка ], CC BY 4.0
[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 Youtube.com/GeologyHub on Oct 5th, 2022.
[5] U.S. Geological Survey
[6] 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 without an asterisk after their name are sourced from the LaMEVE database (British Geological Survey © UKRI), [ Ссылка ], Used with Permission

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.

0:00 Seismic Signal Spike
0:55 1985 Eruption
1:56 Current Situation
2:58 Hazard Map
4:04 Final Thoughts & Conclusion

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