| 1. Identity statement | ||||
| Reference Type | Journal Article | |||
| Site | mtc-m21b.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP3W34P/3QAT57E | |||
| Repository | sid.inpe.br/mtc-m21b/2018/01.04.14.53 (restricted access) | |||
| Last Update | 2018:01.04.14.53.52 (UTC) simone | |||
| Metadata Repository | sid.inpe.br/mtc-m21b/2018/01.04.14.53.52 | |||
| Metadata Last Update | 2021:01.02.22.17.20 (UTC) administrator | |||
| DOI | 10.1016/j.quascirev.2017.12.005 | |||
| ISSN | 0277-3791 | |||
| Citation Key | CrivellariCKHPZZSMHAOM:2018:InAmFr | |||
| Title | Increased Amazon freshwater discharge during late Heinrich Stadial 1  | |||
| Year | 2018 | |||
| Month | Feb. | |||
| Access Date | 2024, May 17 | |||
| Type of Work | journal article | |||
| Secondary Type | PRE PI | |||
| Number of Files | 1 | |||
| Size | 2525 KiB | |||
| 2. Context | ||||
| Author | 1 Crivellari, Stefano 2 Chiessi, Cristiano Mazur 3 Kuhnert, Henning 4 Häggi, Christoph 5 Portilho-Ramos, Rodrigo da Costa 6 Zeng, Jing-Ying 7 Zhang, Yancheng 8 Schefuß, Enno 9 Mollenhauer, Gesine 10 Hefter, Jens 11 Alexandre, Felipe 12 Oliveira, Gilvan Sampaio de 13 Mulitza, Stefan | |||
| Resume Identifier | 1 2 3 4 5 6 7 8 9 10 11 12 8JMKD3MGP5W/3C9JHBE | |||
| Group | 1 2 3 4 5 6 7 8 9 10 11 12 DIDOP-CGCPT-INPE-MCTIC-GOV-BR | |||
| Affiliation | 1 Universidade Federal de São Paulo (UNIFESP) 2 Universidade de São Paulo (USP) 3 University of Bremen 4 University of Bremen 5 Universidade Federal de São Paulo (UNIFESP) 6 University of Bremen 7 University of Bremen 8 University of Bremen 9 Alfred Wegener Institute for Polar and Marine Research 10 Alfred Wegener Institute for Polar and Marine Research 11 Instituto Nacional de Pesquisas Espaciais (INPE) 12 Instituto Nacional de Pesquisas Espaciais (INPE) 13 University of Bremen | |||
| Author e-Mail Address | 1 2 3 4 5 6 7 8 9 10 11 12 gilvan.sampaio@inpe.br | |||
| Journal | Quaternary Science Reviews | |||
| Volume | 181 | |||
| Pages | 144-155 | |||
| Secondary Mark | A1_INTERDISCIPLINAR A1_GEOCIÊNCIAS A1_CIÊNCIAS_AGRÁRIAS_I C_CIÊNCIAS_BIOLÓGICAS_I | |||
| History (UTC) | 2018-01-04 14:53:52 :: simone -> administrator :: 2018-01-04 14:53:52 :: administrator -> simone :: 2018 2018-01-04 14:57:58 :: simone -> administrator :: 2018 2021-01-02 22:17:20 :: administrator -> simone :: 2018 | |||
| 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 | Heinrich Stadial 1 Amazon Basin Continental precipitation Planktonic foraminifera Lipid biomarkers | |||
| Abstract | The temporal succession of changes in Amazonian hydroclimate during Heinrich Stadial 1 (HS1) (ca. 1814.7 cal ka BP) is currently poorly resolved. Here we present HS1 records based on isotope, inorganic and organic geochemistry from a marine sediment core influenced by the Amazon River discharge. Our records offer a detailed reconstruction of the changes in Amazonian hydroclimate during HS1, integrated over the basin. We reconstructed surface water hydrography using stable oxygen isotopes (δ18O) and Mg/Ca-derived paleotemperatures from the planktonic foraminifera Globigerinoides ruber, as well as salinity changes based on stable hydrogen isotope (δD) of palmitic acid. We also analyzed branched and isoprenoid tetraether concentrations, and compared them to existing bulk sediment ln(Fe/Ca) data and vegetation reconstruction based on stable carbon isotopes from n-alkanes, in order to understand the relationship between continental precipitation, vegetation and sediment production. Our results indicate a two-phased HS1 (HS1a and HS1b). During HS1a (1816.9 cal ka BP), a first sudden increase of sea surface temperatures (SST) in the western equatorial Atlantic correlated with the slowdown of the Atlantic Meridional Overturning Circulation (AMOC) and the associated southern hemisphere warming phase of the bipolar seesaw. This phase was also characterized by an increased delivery of terrestrial material. During HS1b (16.914.8 cal ka BP), a decrease in terrestrial input was, however, associated with a marked decline of seawater δ18O and palmitic acid δD. Both isotopic proxies independently indicate a drop in sea surface salinity (SSS). A number of records under the influence of the North Brazil Current, in contrast, indicate increases in SST and SSS resulting from a weakened AMOC during HS1. Our records thus suggest that the expected increase in SSS due to the AMOC slowdown was overridden by a two-phased positive precipitation anomaly in Amazonian hydroclimate. | |||
| Area | MET | |||
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDOP > Increased Amazon freshwater... | |||
| 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 | crivellari_increased.pdf | |||
| User Group | simone | |||
| Reader Group | administrator simone | |||
| Visibility | shown | |||
| Archiving Policy | denypublisher denyfinaldraft24 | |||
| Read Permission | deny from all and allow from 150.163 | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Next Higher Units | 8JMKD3MGPCW/43SQKNE | |||
| Citing Item List | sid.inpe.br/mtc-m21/2012/07.13.14.49.24 3 sid.inpe.br/bibdigital/2021/01.02.22.14 2 | |||
| Dissemination | WEBSCI; PORTALCAPES; COMPENDEX. | |||
| Host Collection | sid.inpe.br/mtc-m21b/2013/09.26.14.25.20 | |||
| 6. Notes | ||||
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn label lineage mark mirrorrepository nextedition notes number orcid parameterlist parentrepositories previousedition previouslowerunit progress project rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url | |||
| 7. Description control | ||||
| e-Mail (login) | simone | |||
| update | ||||