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Marine Reservoir Correction in the South of Vietnam Estimated from An Annually-Banded Coral

Published online by Cambridge University Press:  18 July 2016

Phong X Dang
Affiliation:
Institute of Geography, Vietnam National Center for Natural Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601, Japan Japan Society for the Promotion of Science
Takehiro Mitsuguchi
Affiliation:
Japan Society for the Promotion of Science National Institute for Environmental Studies, Tsukuba 305-8506, Japan
Hiroyuki Kitagawa*
Affiliation:
Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601, Japan
Yasuyuki Shibata
Affiliation:
National Institute for Environmental Studies, Tsukuba 305-8506, Japan
Toshiyuki Kobayashi
Affiliation:
National Institute for Environmental Studies, Tsukuba 305-8506, Japan
*
Corresponding author. Email: kitagawa@ihas.nagoya-u.ac.jp.
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Abstract

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We measured radiocarbon in an annually-banded coral core collected from Con Dao Island, Vietnam, 90 km from the mouth of the Mekong River, and estimated the regional correction of the marine reservoir age (ΔR value). Twelve samples were continuously taken from the annual bands (AD 1949–1960) which were clearly identified under UV light (∼352 nm) as well as by X-radiography. The 14C content of the samples was determined using an accelerator mass spectrometer at the National Institute for Environmental Studies, Tsukuba, Japan. Results provide a Δ14C time series showing a relatively steady value of −48.6 ± 4.6‰ for the period of 1949–1955 and an abrupt increase starting from 1956 that indicates a quick response to the atmospheric testing of nuclear bombs. Using the prebomb 14C data, the ΔR value in the south of Vietnam is estimated to be −74 ± 39 yr.

Type
Part II
Copyright
Copyright © The Arizona Board of Regents on behalf of the University of Arizona 

References

Druffel, ERM, Suess, H. 1983. On the radiocarbon record in banded corals. Journal of Geophysical Research 88: 1271–80.Google Scholar
Kitagawa, H, Masuzawa, T, Nakamura, T, Matsumoto, E. 1993. A batch preparation method for graphite targets with low background for AMS 14C measurements. Radiocarbon 35(2):295300.Google Scholar
Ostlund, HG, Stuiver, M. 1980. GEOSECS Pacific radiocarbon. Radiocarbon 22(1):2553.CrossRefGoogle Scholar
Southon, J, Kashgarian, M, Fontugne, M, Metivier, B, Yim, WWS. 2002. Marine reservoir corrections for the Indian Ocean and Southeast Asia. Radiocarbon 44(1): 167–80.Google Scholar
Stuiver, M, Polach, HA. 1977. Discussion: reporting of 14C data. Radiocarbon 19(3):355–63.Google Scholar
Stuiver, M, Quay, P. 1981. Atmospheric 14C changes resulting from fossil fuel CO2 release and cosmic ray flux variability. Earth and Planetary Science Letters 53:349–62.CrossRefGoogle Scholar
Stuiver, M, Ostlund, HG. 1983. GEOSECS Indian Ocean and Mediterranean radiocarbon. Radiocarbon 25(1): 129.CrossRefGoogle Scholar
Stuiver, M, Braziunas, TF. 1993. Modeling atmospheric 14C influences and 14C ages of marine samples to 10,000 BC. Radiocarbon 35(1):137–89.Google Scholar
Stuiver, M, Reimer, PJ, Braziunas, TF. 1998a. High-precision radiocarbon age calibration for terrestrial and marine samples. Radiocarbon 40(3):1127–51. Data available at http://radiocarbon.pa.qub.ac.uk/calib/.Google Scholar
Stuiver, M, Reimer, PJ, Bard, E, Beck, JW, Burr, GS, Hughen, KA, Kromer, B, McCormac, G, van der Plicht, J, Spurk, M. 1998b. INTCAL98 radiocarbon age calibration, 24,000–0 cal BP. Radiocarbon 40(3):1041–83. Data available at http://radiocarbon.pa.qub.ac.uk/calib/.CrossRefGoogle Scholar