1. Identity statement | |
Reference Type | Journal Article |
Site | mtc-m21c.sid.inpe.br |
Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
Identifier | 8JMKD3MGP3W34R/3UHG6M5 |
Repository | sid.inpe.br/mtc-m21c/2019/12.10.11.38 (restricted access) |
Last Update | 2020:01.02.13.15.39 (UTC) simone |
Metadata Repository | sid.inpe.br/mtc-m21c/2019/12.10.11.38.08 |
Metadata Last Update | 2021:07.28.22.00.53 (UTC) administrator |
Secondary Key | INPE--PRE/ |
DOI | 10.1029/2019PA003653 |
ISSN | 2572-4517 |
Citation Key | BallalaiSLVCJKTCL:2019:TrSpAg |
Title | Tracking the spread of Agulhas Leakage to the western South Atlantic and its northward transmission during the last interglacial |
Year | 2019 |
Month | Nov. |
Access Date | 2024, May 19 |
Type of Work | journal article |
Secondary Type | PRE PI |
Number of Files | 1 |
Size | 15410 KiB |
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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 |
Journal | Paleoceanography and Paleoclimatology |
Volume | 34 |
Number | 11 |
Pages | 1744-1760 |
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 |
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3. Content and structure | |
Is the master or a copy? | is the master |
Content Stage | completed |
Transferable | 1 |
Content Type | External Contribution |
Version Type | publisher |
Keywords | Termination II Brazil Current Agulhas rings Subtropical gyre Atlantic Meridional Overturning Circulation |
Abstract | Intensifications 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. |
Area | MET |
Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > CGCPT > Tracking the spread... |
doc Directory Content | access |
source Directory Content | there are no files |
agreement Directory Content | |
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4. Conditions of access and use | |
Language | en |
Target File | ballalai_tracking.pdf |
User Group | simone |
Reader Group | administrator simone |
Visibility | shown |
Read Permission | deny from all and allow from 150.163 |
Update Permission | not transferred |
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5. Allied materials | |
Mirror Repository | urlib.net/www/2017/11.22.19.04.03 |
Next Higher Units | 8JMKD3MGPCW/3EUPEJL |
Citing Item List | sid.inpe.br/bibdigital/2013/10.06.18.03 8 |
Dissemination | WEBSCI; SCOPUS. |
Host Collection | urlib.net/www/2017/11.22.19.04 |
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6. Notes | |
Empty Fields | alternatejournal archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn label lineage mark nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project resumeid rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype url |
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7. Description control | |
e-Mail (login) | simone |
update | |
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