Romero, Oscar E; Kim, Jung-Hyun; Hebbeln, Dierk (2006): Geochemistry and paleontology of sediment core GeoB3359-3. PANGAEA, https://doi.org/10.1594/PANGAEA.738190, Supplement to: Romero, OE et al. (2006): Paleoproductivity evolution off central Chile from the Last Glacial Maximum to the Early Holocene. Quaternary Research, 65(3), 519-525, https://doi.org/10.1016/j.yqres.2005.07.003
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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.
Latitude: -35.216667 * Longitude: -72.808333
Date/Time Start: 1995-05-31T00:00:00 * Date/Time End: 1995-05-31T00:00:00
Datasets listed in this publication series
- Romero, OE; Kim, J-H; Hebbeln, D (2006): (Table 1) Age determination of sediment core GeoB3359-3. https://doi.org/10.1594/PANGAEA.738189
- Romero, OE; Kim, J-H; Hebbeln, D (2006): Age, bulk components and diatoms of sediment core GeoB3359-3. https://doi.org/10.1594/PANGAEA.271778