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1. Identity statement
Reference TypeJournal Article
Sitemtc-m21c.sid.inpe.br
Holder Codeisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identifier8JMKD3MGP3W34R/3UHG6M5
Repositorysid.inpe.br/mtc-m21c/2019/12.10.11.38   (restricted access)
Last Update2020:01.02.13.15.39 (UTC) simone
Metadata Repositorysid.inpe.br/mtc-m21c/2019/12.10.11.38.08
Metadata Last Update2021:07.28.22.00.53 (UTC) administrator
Secondary KeyINPE--PRE/
DOI10.1029/2019PA003653
ISSN2572-4517
Citation KeyBallalaiSLVCJKTCL:2019:TrSpAg
TitleTracking the spread of Agulhas Leakage to the western South Atlantic and its northward transmission during the last interglacial
Year2019
MonthNov.
Access Date2024, May 19
Type of Workjournal article
Secondary TypePRE PI
Number of Files1
Size15410 KiB
2. Context
Author 1 Ballalai, João
 2 Santos, Thiago Pereira dos
 3 Lessa, Douglas Villela de Oliveira
 4 Venancio, Igor Martins
 5 Chiessi, Cristiano M.
 6 Johnstone, Heather H.
 7 Kuhnert, Henning
 8 Toledo, Felipe Antonio de Lima
 9 Costa, Karen B.
10 Luiza, Albuquerque Ana
Group 1
 2
 3
 4 CGCPT-CGCPT-INPE-MCTIC-GOV-BR
Affiliation 1 Universidade Federal Fluminense (UFF)
 2 Universidade Federal Fluminense (UFF)
 3 Universidade Federal Fluminense (UFF)
 4 Instituto Nacional de Pesquisas Espaciais (INPE)
 5 Universidade de São Paulo (USP)
 6 University of Bremen
 7 University of Bremen
 8 Universidade de São Paulo (USP)
 9 Universidade de São Paulo (USP)
10 Universidade Federal Fluminense (UFF)
Author e-Mail Address 1
 2
 3
 4 igor.venancio@inpe.br
JournalPaleoceanography and Paleoclimatology
Volume34
Number11
Pages1744-1760
History (UTC)2019-12-10 11:38:08 :: simone -> administrator ::
2020-01-02 13:10:37 :: administrator -> simone :: 2019
2020-01-07 16:40:34 :: simone -> administrator :: 2019
2021-07-28 22:00:53 :: administrator -> simone :: 2019
3. Content and structure
Is the master or a copy?is the master
Content Stagecompleted
Transferable1
Content TypeExternal Contribution
Version Typepublisher
KeywordsTermination II
Brazil Current
Agulhas rings
Subtropical gyre
Atlantic Meridional Overturning Circulation
AbstractIntensifications of the Agulhas Leakage (AL) during glacial Terminations have long been proposed as a necessary mechanism to return the Atlantic Meridional Overturning Circulation (AMOC) to its interglacial mode. However, the lack of records showing the downstream evolution of the AL signal and the large temporal differences between AL intensification and the resumption of deep-water convection cast doubt on the importance of this mechanism to the overturning. Here, we analyze a combination of new and previously published data related to Mg/Ca-derived temperatures and ice-volume-corrected seawater δ18O (δ18OIVC-SW as a proxy for ocean salinity) that demonstrate the propagation of the AL signal via surface and thermocline waters to the western South Atlantic (Santos Basin) during glacial Termination II and the early Last Interglacial. The saline AL waters were temporarily stored in the upper subtropical South Atlantic until two abrupt freshening steps indicate their release into the North Atlantic via the surface and thermocline waters at ca. 129 and 123 ka BP, respectively. Considering age uncertainties, these two steps are coeval with the resumption of convection in the Labrador and Nordic Seas during the Last Interglacial. We propose a mechanism in which both a strong AL and a favorable ocean-atmosphere configuration in the tropical Atlantic were required to allow the flux of AL waters into the North Atlantic, where they then contributed to pushing the AMOC during the Last Interglacial. Our results provide a framework that connects AL strengthening to the AMOC intensifications that follow glaciations.
AreaMET
Arrangementurlib.net > BDMCI > Fonds > Produção anterior à 2021 > CGCPT > Tracking the spread...
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source Directory Contentthere are no files
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4. Conditions of access and use
Languageen
Target Fileballalai_tracking.pdf
User Groupsimone
Reader Groupadministrator
simone
Visibilityshown
Read Permissiondeny from all and allow from 150.163
Update Permissionnot transferred
5. Allied materials
Mirror Repositoryurlib.net/www/2017/11.22.19.04.03
Next Higher Units8JMKD3MGPCW/3EUPEJL
Citing Item Listsid.inpe.br/bibdigital/2013/10.06.18.03 8
DisseminationWEBSCI; SCOPUS.
Host Collectionurlib.net/www/2017/11.22.19.04
6. Notes
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