Скачать или смотреть New Zealand's Forgotten Volcanic Tsunami; Healy Seamount's Destructive Eruption

A destructive tsunami once struck New Zealand, wiping out several coastal towns. However, this tsunami was not caused by a major earthquake, but rather a largely hidden volcanic eruption. This is the story of New Zealand's Healy Seamount, which is one of three volcanoes north of New Zealand's north island but south of Tonga to have produced a caldera forming eruption during the Holocene epoch.

Thumbnail Photo Credit: NSF and NOAA, NOAA Photo Library, Public Domain, https://photolib.noaa.gov/Collections.... This image was then overlaid with text in addition to GeologyHub made graphics (the image border & the GeologyHub logo).

Note: This video's thumbnail image attempts to display what the early 15th century caldera forming eruption of the Healy Seamount volcano might have looked like.

A special thanks to: Shane Cronin, Sung-Hyun Park, & Marta Ribo for providing video footage of the volcano via scans of the seafloor before and after (with the after containing footage of its new caldera)

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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:
Public Domain: https://creativecommons.org/publicdom...
CC BY 3.0 NZ: https://creativecommons.org/licenses/...

Sources/Citations:
[1] (1991) The age and stratigraphic significance of sea-rafted Loisels Pumice
in northern New Zealand, Journal of the Royal Society of New Zealand, 21:4, 357-371, DOI:
10.1080/03036758.1991.10420833
[2] Geonet
[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    / geologyhub   on Oct 5th, 2022.
[4] VEIs, dates/years, composition, bulk tephra volume 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

0:00 A Forgotten Tsunami
2:22 Hunga Tonga-Hunga Ha'apai
2:53 Caldera Formation
3:44 Similar Eruptions