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| Main Authors: | , , , , , , , , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
| Published: |
PANGAEA
2015
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| Subjects: | |
| Online Access: | https://doi.org/10.1594/PANGAEA.847283 |
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| _version_ | 1867171368222588928 |
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| author | Stríkis, Nicolás Misailidis Chiessi, Cristiano Mazur da Cruz Junior, Francisco William Vuille, Mathias Cheng, Hai de Souza Barreto, Eline A Mollenhauer, Gesine Kasten, Sabine Karmann, Ivo Edwards, R Lawrence Bernal, Patricio A dos Reis Sales, Hamilton |
| author_facet | Stríkis, Nicolás Misailidis Chiessi, Cristiano Mazur da Cruz Junior, Francisco William Vuille, Mathias Cheng, Hai de Souza Barreto, Eline A Mollenhauer, Gesine Kasten, Sabine Karmann, Ivo Edwards, R Lawrence Bernal, Patricio A dos Reis Sales, Hamilton |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | A substantial strengthening of the South American monsoon system (SAMS) during Heinrich Stadials (HS) points toward decreased cross-equatorial heat transport as the main driver of monsoonal hydroclimate variability at millennial time-scales. In order to better constrain the exact timing and internal structure of HS1 over tropical South America we assessed two precisely dated speleothem records from central-eastern and northeastern Brazil in combination with two marine records of terrestrial organic and inorganic matter input into the western equatorial Atlantic. During HS1 we recognize at least two events of widespread intensification of the SAMS across the entire region influenced by the South Atlantic Convergence Zone (SACZ) at 16.11-14.69 kyr BP and 18.1-16.66 kyr BP (labeled as HS1a and HS1c, respectively), separated by a dry excursion from 16.66-16.11 kyr BP (HS1b). In view of the spatial structure of precipitation anomalies, the widespread increase of monsoon precipitation over the SACZ domain was termed 'Mega-SACZ'. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_847283 |
| institution | PANGAEA |
| language | en |
| publishDate | 2015 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Paleoclimate record combinatio of speleothems and of sediment core GeoB3910-2 Stríkis, Nicolás Misailidis Chiessi, Cristiano Mazur da Cruz Junior, Francisco William Vuille, Mathias Cheng, Hai de Souza Barreto, Eline A Mollenhauer, Gesine Kasten, Sabine Karmann, Ivo Edwards, R Lawrence Bernal, Patricio A dos Reis Sales, Hamilton Center for Marine Environmental Sciences; MARUM A substantial strengthening of the South American monsoon system (SAMS) during Heinrich Stadials (HS) points toward decreased cross-equatorial heat transport as the main driver of monsoonal hydroclimate variability at millennial time-scales. In order to better constrain the exact timing and internal structure of HS1 over tropical South America we assessed two precisely dated speleothem records from central-eastern and northeastern Brazil in combination with two marine records of terrestrial organic and inorganic matter input into the western equatorial Atlantic. During HS1 we recognize at least two events of widespread intensification of the SAMS across the entire region influenced by the South Atlantic Convergence Zone (SACZ) at 16.11-14.69 kyr BP and 18.1-16.66 kyr BP (labeled as HS1a and HS1c, respectively), separated by a dry excursion from 16.66-16.11 kyr BP (HS1b). In view of the spatial structure of precipitation anomalies, the widespread increase of monsoon precipitation over the SACZ domain was termed 'Mega-SACZ'. |
| title | Paleoclimate record combinatio of speleothems and of sediment core GeoB3910-2 |
| topic | Center for Marine Environmental Sciences; MARUM |
| url | https://doi.org/10.1594/PANGAEA.847283 |