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  • (9Z)-2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyliden)pentadeca-9-ene, per unit mass total organic carbon; 2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyl)pentadecane, per unit mass total organic carbon; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol, per unit mass total organic carbon; Accumulation rate, (9Z)-2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyliden)pentadeca-9-ene; Accumulation rate, 2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyl)pentadecane; Accumulation rate, 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol; AGE; Alkenone; ArcTrain; Calculated; DEPTH, sediment/rock; Gas chromatography - Mass spectrometry (GC-MS); GC; Gravity corer; IP25; Labrador Sea; Maria S. Merian; Meltwater pulse; MSM12/2; MSM12/2_647-1; MSM12/2-05-01; Phytoplankton biomarker Brassicasterol IP25 index; Phytoplankton biomarker C25 HBI (Z) triene IP25 index; Phytoplankton biomarker Dinosterol IP25 index; Processes and impacts of climate change in the North Atlantic Ocean and the Canadian Arctic; Sea ice; SST; sterols; XRF  (1)
  • Carbon dioxide
Collection
Keywords
Publisher
Years
  • 1
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    Unknown
    Evidence of silicic acid leakage to the tropical Atlantic via Antarctic Intermediate Water during Marine Isotope Stage 4 (2013)
    John Wiley & Sons
    Details
    Publication Date: 2022-05-25
    Description: Author Posting. © American Geophysical Union, 2013. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Paleoceanography 28 (2013): 307–318, doi:10.1002/palo.20030.
    Description: Antarctic Intermediate Water (AAIW) and Subantarctic Mode Water (SAMW) are the main conduits for the supply of dissolved silicon (silicic acid) from the deep Southern Ocean (SO) to the low-latitude surface ocean and therefore have an important control on low-latitude diatom productivity. Enhanced supply of silicic acid by AAIW (and SAMW) during glacial periods may have enabled tropical diatoms to outcompete carbonate-producing phytoplankton, decreasing the relative export of inorganic to organic carbon to the deep ocean and lowering atmospheric pCO2. This mechanism is known as the “silicic acid leakage hypothesis” (SALH). Here we present records of neodymium and silicon isotopes from the western tropical Atlantic that provide the first direct evidence of increased silicic acid leakage from the Southern Ocean to the tropical Atlantic within AAIW during glacial Marine Isotope Stage 4 (~60–70 ka). This leakage was approximately coeval with enhanced diatom export in the NW Atlantic and across the eastern equatorial Atlantic and provides support for the SALH as a contributor to CO2 drawdown during full glacial development.
    Description: The work is part of a wider project on the MIS 5/4 transition, supervised by S. B. and supported by NERC (UK) grant NE/F002734/1. K.R.H. is funded by National Science Foundation grant MCG-1029986. T.v.d.F. acknowledges funding from the European Commission (IRG 230828).
    Description: 2013-12-27
    Keywords: Silica leakage ; Diatom ; Carbon dioxide ; SAMW ; AAIW
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Format: application/pdf
    Format: application/msword
    Format: image/jpeg
    Location Call Number Expected Availability
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    PAPER (OA)
  • 2
    facet.materialart.
    Unknown
    Highly branched isoprenoid and sterol concentration and accumulation rates of sediment core MSM12/2-5-1 (2022)
    PANGAEA
    Details
    Publication Date: 2024-02-05
    Keywords: (9Z)-2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyliden)pentadeca-9-ene, per unit mass total organic carbon; 2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyl)pentadecane, per unit mass total organic carbon; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol, per unit mass total organic carbon; Accumulation rate, (9Z)-2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyliden)pentadeca-9-ene; Accumulation rate, 2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyl)pentadecane; Accumulation rate, 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol; AGE; Alkenone; ArcTrain; Calculated; DEPTH, sediment/rock; Gas chromatography - Mass spectrometry (GC-MS); GC; Gravity corer; IP25; Labrador Sea; Maria S. Merian; Meltwater pulse; MSM12/2; MSM12/2_647-1; MSM12/2-05-01; Phytoplankton biomarker Brassicasterol IP25 index; Phytoplankton biomarker C25 HBI (Z) triene IP25 index; Phytoplankton biomarker Dinosterol IP25 index; Processes and impacts of climate change in the North Atlantic Ocean and the Canadian Arctic; Sea ice; SST; sterols; XRF
    Type: Dataset
    Format: text/tab-separated-values, 1260 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
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