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Pore fluid constraints on deep ocean temperature and salinity during the Last Glacial Maximum

Adkins, J. F. and Schrag, D. P. (2001) Pore fluid constraints on deep ocean temperature and salinity during the Last Glacial Maximum. Geophysical Research Letters, 28 (5). pp. 771-774. ISSN 0094-8276. https://resolver.caltech.edu/CaltechAUTHORS:20120828-115449235

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Abstract

Pore water records of δ^(18)O and [Cl] from ODP Site 1063A on the Bermuda Rise constrain the change in seawater δ^(18)O and salinity from the Last Glacial Maximum (LGM) to the Holocene to be 0.75±0.05‰ and 2.5±0.1% respectively. Coupled with a measured benthic foraminiferal δ^(18)O change, this result means that bottom waters were 4.6±0.8°C cooler than the Holocene at the LGM and therefore at or near the seawater freezing point. Coupled δ^(18)O and chlorinity results give an extrapolated mean ocean LGM to Holocene change in δ^(18)O of 0.95±0.09‰. These data also constrain the past southern source deep‐water salinity to be 35.76±0.04 psu, which is within error of the mean deep ocean value for this time.


Item Type:Article
Related URLs:
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http://dx.doi.org/10.1029/2000GL011597DOIUNSPECIFIED
http://www.agu.org/pubs/crossref/2001/2000GL011597.shtmlPublisherUNSPECIFIED
Additional Information:© 2001 American Geophysical Union. Received 15 March 2000; accepted 17 July 2000.
Issue or Number:5
Record Number:CaltechAUTHORS:20120828-115449235
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20120828-115449235
Official Citation:Adkins, J. F. and D. P. Schrag (2001), Pore fluid constraints on deep ocean temperature and salinity during the Last Glacial Maximum, Geophys. Res. Lett., 28(5), 771–774, doi:10.1029/2000GL011597.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:33609
Collection:CaltechAUTHORS
Deposited By: Aucoeur Ngo
Deposited On:28 Aug 2012 20:52
Last Modified:03 Oct 2019 04:11

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