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Reference TypeJournal Article
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Repositorysid.inpe.br/mtc-m21d/2023/11.03.17.36
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DOI10.1029/2023JA031476
ISSN2169-9402
Citation KeyFigueiredoVaBeWrTaNySi:2023:ObMoOv
TitleSecondary Gravity Waves From the Tonga Volcano Eruption: Observation and Modeling Over New Zealand and Australia
Year2023
MonthOct.
Access Date2024, May 08
Type of Workjournal article
Secondary TypePRE PI
Number of Files1
Size5866 KiB
2. Context
Author1 Figueiredo, Cosme Alexandre Oliveira Barros
2 Vadas, S.
3 Becker, E.
4 Wrasse, Cristiano Max
5 Takahashi, Hisao
6 Nyassor, Prosper Kwamla
7 Silva, Diego Barros
Resume Identifier1
2
3
4
5 8JMKD3MGP5W/3C9JHCM
ORCID1 0000-0003-4423-5111
2 0000-0002-6459-005X
3
4 0000-0001-8026-3625
5 0000-0002-8844-8920
Group1 DICEP-CGCE-INPE-MCTI-GOV-BR
2
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4 DICEP-CGCE-INPE-MCTI-GOV-BR
5 DICEP-CGCE-INPE-MCTI-GOV-BR
6 GESAST-CEA-DIPGR-INPE-MCTI-GOV-BR
7 YYY-CGCE-INPE-MCTI-GOV-BR
Affiliation1 Instituto Nacional de Pesquisas Espaciais (INPE)
2 Northwest Research Associates
3 Northwest Research Associates
4 Instituto Nacional de Pesquisas Espaciais (INPE)
5 Instituto Nacional de Pesquisas Espaciais (INPE)
6 Instituto Nacional de Pesquisas Espaciais (INPE)
7 Instituto Nacional de Pesquisas Espaciais (INPE)
Author e-Mail Address1 cosme.figueiredo@inpe.br
2
3
4 cristiano.wrasse@inpe.br
5
6 prosper.nyassor@inpe.br
7 diego.barros@inpe.br
JournalJournal of Geophysical Research: Space Physics
Volume128
Number10
Pagese2023JA031476
History (UTC)2023-11-03 17:36:29 :: simone -> administrator ::
2024-04-05 05:03:26 :: administrator -> simone :: 2023
3. Content and structure
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Transferable1
Content TypeExternal Contribution
Version Typepublisher
Keywordsatmospheric models
gravity waves
ionospheric models
Tonga eruption
traveling ionospheric disturbances
AbstractThe biggest volcanic eruption since 1991 happened on 15 January 2022 on the island of Hunga Tonga-Hunga Haʻapai (20.6°S; 175.4°W) in the South Pacific between 4:00 and 4:16 UT. The updrafts from the eruption reached 58 km height. In order to observe its ionospheric effects, approximately 750 GNSS receivers in New Zealand and Australia were used to calculate the detrended total electron content (dTEC). Traveling ionospheric disturbances (TIDs) were observed over New Zealand 1.01.5 hr after the volcano eruption, with a horizontal wavelength ((Figure presented.)) of 1,525 km, horizontal phase velocity ((Figure presented.)) of 635 m/s, period (τ) of 40 min, and azimuth (α) of 214°. On the other hand, TIDs were observed 23 hr after the eruption in Australia with (Figure presented.), (Figure presented.), τ, and α of 922 km, 375 m/s, 41 min, and 266°, respectively. Using reverse ray tracing, we found that these GWs originated at z > 100 km at a location ∼500 km south of Tonga, in agreement with model results for the location of a large amplitude body force created from the breaking of primary GWs from the eruption. Thus, we found that these fast GWs were secondary, not primary GWs from the Tonga eruption.
AreaCEA
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Languageen
Target FileJGR Space Physics - 2023 - Figueiredo - Secondary Gravity Waves From the Tonga Volcano Eruption  Observation and Modeling.pdf
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