Marine reservoir correction for the Cocos (Keeling) Islands, Indian Ocean

Hua, Quan, Woodroffe, Colin D., Barbetti, Mike, Smithers, Scott G., Zoppi, Ugo, and Fink, David (2004) Marine reservoir correction for the Cocos (Keeling) Islands, Indian Ocean. Radiocarbon, 46 (2). pp. 603-610.

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Abstract

Known-age corals from the Cocos (Keeling) Islands, Indian Ocean, have been analyzed by accelerator mass spectrometry (AMS) for radiocarbon to determine marine reservoir age corrections. The ΔR value for the Cocos (Keeling)Islands is 66 ± 12 yr based on the analyses undertaken for this study. When our AMS and previously published dates for Cocos are averaged, they yield a ΔR of 64 ± 15 yr. This is a significant revision of an earlier estimate of the ΔR value for the Cocos (Keeling) Islands of 186 ± 66 yr (Toggweiler et al. 1991). The (revised) lower ΔR for the Cocos (Keeling) Islands is consistent with GEOSECS 14C data for the Indian Ocean, and previously published bomb 14C data for the Red Sea, Gulf of Aden, and Cocos Islands. The revised ΔR is also close to values for the eastern Indian Ocean and adjacent seas. These suggest surface waters that reach the Cocos Islands might be partly derived from the far western Pacific, via the Indonesian throughflow, and might not be influenced by the southeast flow from the Arabian Sea.

Item ID: 4499
Item Type: Article (Research - C1)
ISSN: 0033-8222
Keywords: corals; oceanography; radiocarbon
Additional Information:

Reproduced with permission from Radiocarbon.

Date Deposited: 11 Jun 2009 00:26
SEO Codes: 96 ENVIRONMENT > 9611 Physical and Chemical Conditions of Water > 961104 Physical and Chemical Conditions of Water in Marine Environments @ 51%
96 ENVIRONMENT > 9699 Other Environment > 969902 Marine Oceanic Processes (excl. Climate Related) @ 49%
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