Lightning Rings and Gravity Waves: Insights Into the Giant Eruption Plume From Tonga's Hunga Volcano on 15 January 2022

Van Eaton, Alexa R.; Lapierre, Jeff; Behnke, Sonja A.; Vagasky, Chris; Schultz, Christopher J.; Pavolonis, Michael; Bedka, Kristopher; Khlopenkov, Konstantin

doi:10.1029/2022gl102341

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Lightning Rings and Gravity Waves: Insights Into the Giant Eruption Plume From Tonga's Hunga Volcano on 15 January 2022

2023
By Van Eaton, Alexa R. ; Lapierre, Jeff ; Behnke, Sonja A. ; ...
Source: Geophysical Research Letters, 50(12)

[PDF-860.47 KB]

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Journal Title:

Geophysical Research Letters
Personal Author:

Van Eaton, Alexa R. ; Lapierre, Jeff ; Behnke, Sonja A. ; Vagasky, Chris ; Schultz, Christopher J. ; ... More +

Van Eaton, Alexa R. ; Lapierre, Jeff ; Behnke, Sonja A. ; Vagasky, Chris ; Schultz, Christopher J. ; Pavolonis, Michael ; Bedka, Kristopher ; Khlopenkov, Konstantin Less -
NOAA Program & Office:

NESDIS (National Environmental Satellite, Data, and Information Service) ; STAR (Center for Satellite Applications and Research)

NESDIS (National Environmental Satellite, Data, and Information Service) ; STAR (Center for Satellite Applications and Research) Less -
Description:

On 15 January 2022, Hunga Volcano in Tonga produced the most violent eruption in the modern satellite era, sending a water-rich plume at least 58 km high. Using a combination of satellite- and ground-based sensors, we investigate the astonishing rate of volcanic lightning (>2,600 flashes min −1) and what it reveals about the dynamics of the submarine eruption. In map view, lightning locations form radially expanding rings. We show that the initial lightning ring is co-located with an internal gravity wave traveling >80 m s −1 in the stratospheric umbrella cloud. Buoyant oscillations of the plume's overshooting top generated the gravity waves, which enhanced turbulent particle interactions and triggered high-current electrical discharges at unusually
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General Earth And Planetary Sciences Geophysics
Source:

Geophysical Research Letters, 50(12)
DOI:

https://doi.org/10.1029/2022gl102341
ISSN:

0094-8276;1944-8007;
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PDF
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American Geophysical Union (AGU)
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Journal Article
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https://creativecommons.org/licenses/by/4.0/
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CC BY
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urn:sha-512:4418696a938b9b1d2370a9197cac96a7b20bb30cb62d990cde71d4321a9aa439e152adc56b6a80c3fe33add7ee7271996c99d145ac4f7a7dc5fef9f5f0102441
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https://repository.library.noaa.gov/view/noaa/54932/noaa_54932_DS1.pdf
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