Ganeshram, Raja S; Pedersen, Thomas F (1998): Glacial-interglacial bioproductivity of the Mexican Margin [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.855307, Supplement to: Ganeshram, RS; Pedersen, TF (1998): Glacial-interglacial variability in upwelling and bioproductivity off NW Mexico: Implications for Quaternary paleoclimate. Paleoceanography, 13(6), 634-645, https://doi.org/10.1029/98PA02508
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Abstract:
Sedimentary accumulation of biogenic components (organic carbon, opal, and biogenic barium) on the northwestern Mexican margin declined during every glacial interval of the past 140 kyr, indicating decreases in upwelling-induced productivity during cold periods. The glacial-interglacial contrasts in upwelling on this margin are attributed to reversals in land-ocean thermal contrast, the waxing and waning of the Laurentide Ice Sheet, and consequent responses of the western hemisphere wind fields. This scenario is consistent with three independent lines of evidence: terrestrial paleoclimatic data, general circulation model results, and our marine records. This pattern of glacial-interglacial variability in upwelling off NW Mexico is opposite to that observed in other low-latitude and midlatitude upwelling areas, such as the eastern equatorial Pacific. These results add to a growing pool of observations that the response of oceanic upwelling to glacial climatic forcing has been regionally variable.
Other version:
Ganeshram, Raja S; Pedersen, Thomas F (1998): NOAA/WDS Paleoclimatology - Eastern Pacific upwelling and productivity during glacial cycles. NOAA National Centers for Environmental Information, https://doi.org/10.25921/GXHD-R642
Coverage:
Median Latitude: 22.856022 * Median Longitude: -106.697016 * South-bound Latitude: 22.388330 * West-bound Longitude: -107.075000 * North-bound Latitude: 23.518330 * East-bound Longitude: -106.480000
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
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13 datasets
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Datasets listed in this publication series
- Ganeshram, RS; Pedersen, TF (1998): Age determination of sediment core off NW Mexico. https://doi.org/10.1594/PANGAEA.857412
- Ganeshram, RS; Pedersen, TF (1998): (Table II-2) Al concentrations from of sediment core NH8P. https://doi.org/10.1594/PANGAEA.855300
- Ganeshram, RS; Pedersen, TF (1998): (Table II-3) Barium concentrations in sediment core NH8P. https://doi.org/10.1594/PANGAEA.855303
- Ganeshram, RS; Pedersen, TF (1998): Concentrations of biogenic components and mass accumulation rates from sediment core NH8P. https://doi.org/10.1594/PANGAEA.855306
- Ganeshram, RS; Pedersen, TF (1998): (Table II-5) Foraminiferal stable oxygen isotope record of sediment core NH8P. https://doi.org/10.1594/PANGAEA.855297
- Ganeshram, RS; Pedersen, TF (1998): (Table II-2) Al concentrations from of sediment core NH15P. https://doi.org/10.1594/PANGAEA.855298
- Ganeshram, RS; Pedersen, TF (1998): (Table II-3) Barium concentrations in sediment core NH15P. https://doi.org/10.1594/PANGAEA.855301
- Ganeshram, RS; Pedersen, TF (1998): Concentrations of biogenic components and mass accumulation rates from sediment core NH15P. https://doi.org/10.1594/PANGAEA.855304
- Ganeshram, RS; Pedersen, TF (1998): (Table II-5) Foraminiferal stable oxygen isotope record of sediment core NH15P. https://doi.org/10.1594/PANGAEA.855295
- Ganeshram, RS; Pedersen, TF (1998): (Table II-2) Al concentrations from of sediment core NH22P. https://doi.org/10.1594/PANGAEA.855299
- Ganeshram, RS; Pedersen, TF (1998): (Table II-3) Barium concentrations in sediment core NH22P. https://doi.org/10.1594/PANGAEA.855302
- Ganeshram, RS; Pedersen, TF (1998): Concentrations of biogenic components and mass accumulation rates from sediment core NH22P. https://doi.org/10.1594/PANGAEA.855305
- Ganeshram, RS; Pedersen, TF (1998): (Table II-5) Foraminiferal stable oxygen isotope record of sediment core NH22P. https://doi.org/10.1594/PANGAEA.855296