Show simple item record

dc.contributor.authorDruffel, Ellen R. M.  Concept link
dc.contributor.authorRobinson, Laura F.  Concept link
dc.contributor.authorGriffin, Sheila  Concept link
dc.contributor.authorHalley, Robert B.  Concept link
dc.contributor.authorSouthon, John R.  Concept link
dc.contributor.authorAdkins, Jess F.  Concept link
dc.date.accessioned2010-05-13T19:35:03Z
dc.date.available2010-05-13T19:35:03Z
dc.date.issued2008-05-13
dc.identifier.citationPaleoceanography 23 (2008): PA2209en_US
dc.identifier.urihttps://hdl.handle.net/1912/3456
dc.descriptionAuthor Posting. © American Geophysical Union, 2008. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Paleoceanography 23 (2008): PA2209, doi:10.1029/2007PA001527.en_US
dc.description.abstractThe 14C reservoir age of the surface ocean was determined for two Holocene periods (4908–4955 and 3008–3066 calendar (cal) B.P.) using U/Th-dated corals from Biscayne National Park, Florida, United States. We found that the average reservoir ages for these two time periods (294 ± 33 and 291 ± 27 years, respectively) were lower than the average value between A.D. 1600 and 1900 (390 ± 60 years) from corals. It appears that the surface ocean was closer to isotopic equilibrium with CO2 in the atmosphere during these two time periods than it was during recent times. Seasonal δ 18O measurements from the younger coral are similar to modern values, suggesting that mixing with open ocean waters was indeed occurring during this coral's lifetime. Likely explanations for the lower reservoir age include increased stratification of the surface ocean or increased Δ14C values of subsurface waters that mix into the surface. Our results imply that a more correct reservoir age correction for radiocarbon measurements of marine samples in this location from the time periods ∼3040 and ∼4930 cal years B.P. is ∼292 ± 30 years, less than the canonical value of 404 ± 20 years.en_US
dc.description.sponsorshipNSF Chemical Oceanography program provided monetary support under grants OCE-9711326, OCE-0137207, and OCE-0551940 (to ERMD).en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.urihttps://doi.org/10.1029/2007PA001527
dc.subjectReservoir ageen_US
dc.subjectRadiocarbonen_US
dc.subjectCoralsen_US
dc.titleLow reservoir ages for the surface ocean from mid-Holocene Florida coralsen_US
dc.typeArticleen_US
dc.identifier.doi10.1029/2007PA001527


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record