Globigerinoides ruber, Globigerina bulloides and MAT derived paleotemperatures for the lasts 772 kyr from cores GL-852 and GL-854 (Santos Basin, Southwest Atlantic)
Fuente:
PANGAEA
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Dataset Open Access |
| Language: | en |
| Published: |
PANGAEA
2019
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1867171373187596288 |
|---|---|
| author | Lessa, Douglas Villela de Oliveira Santos, Thiago Pereira dos Venancio, Igor Martins Santarosa, Ana Cláudia Aoki Santos Junior, Edmundo C Toledo, Felipe Antonio L Costa, Karen B Albuquerque, Ana Luiza Spadano |
| author_facet | Lessa, Douglas Villela de Oliveira Santos, Thiago Pereira dos Venancio, Igor Martins Santarosa, Ana Cláudia Aoki Santos Junior, Edmundo C Toledo, Felipe Antonio L Costa, Karen B Albuquerque, Ana Luiza Spadano |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Expansions of coastal upwelling spots along the Brazilian coast were previously reported for Marine Isotope Stage (MIS) 5, but open questions remain regarding the climatic mechanisms and the periodicity of such changes. Based on two marine sediment cores, we provide evidence for multiple intensifications of the upwelling regime off the Southeast Brazilian margin (SBM) during several interglacials and highlight the major role of eccentricity as the responsible forcing. In addition, we show a two-step change in the upwelling regime across the Mid-Brunhes Event (MBE) and an increase in the amplitude of upwelling variability after this climatic transition. Our findings point to substantial modifications of the upwelling regions during several glacial-interglacial transitions that probably altered the regional marine productivity regime and the carbon budget. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_901799 |
| institution | PANGAEA |
| language | en |
| publishDate | 2019 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Globigerinoides ruber, Globigerina bulloides and MAT derived paleotemperatures for the lasts 772 kyr from cores GL-852 and GL-854 (Santos Basin, Southwest Atlantic) Lessa, Douglas Villela de Oliveira Santos, Thiago Pereira dos Venancio, Igor Martins Santarosa, Ana Cláudia Aoki Santos Junior, Edmundo C Toledo, Felipe Antonio L Costa, Karen B Albuquerque, Ana Luiza Spadano Milankovitch cycles; Paleoceanography; Planktonic foraminifera; Pleistocene; Southwest Atlantic Ocean Expansions of coastal upwelling spots along the Brazilian coast were previously reported for Marine Isotope Stage (MIS) 5, but open questions remain regarding the climatic mechanisms and the periodicity of such changes. Based on two marine sediment cores, we provide evidence for multiple intensifications of the upwelling regime off the Southeast Brazilian margin (SBM) during several interglacials and highlight the major role of eccentricity as the responsible forcing. In addition, we show a two-step change in the upwelling regime across the Mid-Brunhes Event (MBE) and an increase in the amplitude of upwelling variability after this climatic transition. Our findings point to substantial modifications of the upwelling regions during several glacial-interglacial transitions that probably altered the regional marine productivity regime and the carbon budget. |
| title | Globigerinoides ruber, Globigerina bulloides and MAT derived paleotemperatures for the lasts 772 kyr from cores GL-852 and GL-854 (Santos Basin, Southwest Atlantic) |
| topic | Milankovitch cycles; Paleoceanography; Planktonic foraminifera; Pleistocene; Southwest Atlantic Ocean |
| url | https://doi.org/10.1594/PANGAEA.901799 |