Geochemistry and paleontology of sediment core GeoB3359-3
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2006
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| _version_ | 1867167663160033280 |
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| author | Romero, Oscar E Kim, Jung-Hyun Hebbeln, Dierk |
| author_facet | Romero, Oscar E Kim, Jung-Hyun Hebbeln, Dierk |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | A geochemical and paleontological reconstruction of paleoproductivity, upwelling intensity and sea surface temperature (SST) off central Chile at 35°S (GeoB3359-3) reveals marked changes from the Last Glacial Maximum (LGM) through the Early Holocene. Surface-water productivity was determined by the interaction between the atmospheric (the Southern Westerlies) and oceanographic (the Antarctic Circumpolar Current, ACC) systems from the LGM through early Termination I (TI). The northward shift of the climate zones during the LGM brought the ACC, as the main macronutrient source, closer to the GeoB3359-3, SST lowered, and surface water productivity and accumulation rates of biogenic components enhanced. With the poleward return of the Southern Westerlies and the ACC, the subtropical high-pressure system became the dominant atmospheric component southward till 35°S during the late TI and Early Holocene and caused surface water productivity to increase through enhanced upwelling. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_738190 |
| institution | PANGAEA |
| language | en |
| publishDate | 2006 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Geochemistry and paleontology of sediment core GeoB3359-3 Romero, Oscar E Kim, Jung-Hyun Hebbeln, Dierk Center for Marine Environmental Sciences; CHIPAL; GeoB3359-3; Gravity corer (Kiel type); MARUM; SL; SO102/1; Sonne; South-East Pacific A geochemical and paleontological reconstruction of paleoproductivity, upwelling intensity and sea surface temperature (SST) off central Chile at 35°S (GeoB3359-3) reveals marked changes from the Last Glacial Maximum (LGM) through the Early Holocene. Surface-water productivity was determined by the interaction between the atmospheric (the Southern Westerlies) and oceanographic (the Antarctic Circumpolar Current, ACC) systems from the LGM through early Termination I (TI). The northward shift of the climate zones during the LGM brought the ACC, as the main macronutrient source, closer to the GeoB3359-3, SST lowered, and surface water productivity and accumulation rates of biogenic components enhanced. With the poleward return of the Southern Westerlies and the ACC, the subtropical high-pressure system became the dominant atmospheric component southward till 35°S during the late TI and Early Holocene and caused surface water productivity to increase through enhanced upwelling. |
| title | Geochemistry and paleontology of sediment core GeoB3359-3 |
| topic | Center for Marine Environmental Sciences; CHIPAL; GeoB3359-3; Gravity corer (Kiel type); MARUM; SL; SO102/1; Sonne; South-East Pacific |
| url | https://doi.org/10.1594/PANGAEA.738190 |