Glacial-interglacial bioproductivity of the Mexican Margin
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...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.855307 2023-05-15T16:40:53+02:00 Glacial-interglacial bioproductivity of the Mexican Margin Ganeshram, Raja S Pedersen, Thomas F 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 1998-11-26 application/zip, 13 datasets https://doi.pangaea.de/10.1594/PANGAEA.855307 https://doi.org/10.1594/PANGAEA.855307 en eng PANGAEA 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 https://doi.pangaea.de/10.1594/PANGAEA.855307 https://doi.org/10.1594/PANGAEA.855307 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Ganeshram, Raja S; Pedersen, Thomas F (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 Dataset 1998 ftpangaea https://doi.org/10.1594/PANGAEA.855307 https://doi.org/10.1029/98PA02508 https://doi.org/10.25921/GXHD-R642 2023-01-20T07:33:37Z 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. Dataset Ice Sheet PANGAEA - Data Publisher for Earth & Environmental Science Pacific ENVELOPE(-107.075000,-106.480000,23.518330,22.388330) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
description |
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. |
format |
Dataset |
author |
Ganeshram, Raja S Pedersen, Thomas F |
spellingShingle |
Ganeshram, Raja S Pedersen, Thomas F Glacial-interglacial bioproductivity of the Mexican Margin |
author_facet |
Ganeshram, Raja S Pedersen, Thomas F |
author_sort |
Ganeshram, Raja S |
title |
Glacial-interglacial bioproductivity of the Mexican Margin |
title_short |
Glacial-interglacial bioproductivity of the Mexican Margin |
title_full |
Glacial-interglacial bioproductivity of the Mexican Margin |
title_fullStr |
Glacial-interglacial bioproductivity of the Mexican Margin |
title_full_unstemmed |
Glacial-interglacial bioproductivity of the Mexican Margin |
title_sort |
glacial-interglacial bioproductivity of the mexican margin |
publisher |
PANGAEA |
publishDate |
1998 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.855307 https://doi.org/10.1594/PANGAEA.855307 |
op_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 |
long_lat |
ENVELOPE(-107.075000,-106.480000,23.518330,22.388330) |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Supplement to: Ganeshram, Raja S; Pedersen, Thomas F (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 |
op_relation |
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 https://doi.pangaea.de/10.1594/PANGAEA.855307 https://doi.org/10.1594/PANGAEA.855307 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.855307 https://doi.org/10.1029/98PA02508 https://doi.org/10.25921/GXHD-R642 |
_version_ |
1766031306575052800 |