Local marine reservoir age variability at Luzon Strait in the South China Sea during the Holocene

S. Hirabayashi; Yusuke Yokoyama; Atsushi Suzuki; T. Esat; Yosuke Miyairi; Takahiro Aze; Fernando Siringan; Y. Maeda

doi:10.1016/j.nimb.2018.12.001

Local marine reservoir age variability at Luzon Strait in the South China Sea during the Holocene

S. Hirabayashi^*, Yusuke Yokoyama, Atsushi Suzuki, T. Esat, Yosuke Miyairi, Takahiro Aze, Fernando Siringan, Y. Maeda

^*Corresponding author for this work

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Abstract

Here, we report new estimates of local marine radiocarbon reservoir ages from northwestern Luzon Island in the Philippines, on the east side of the South China Sea. Data for two periods, through the 1940’s and the mid-Holocene, were derived from modern and fossil corals. Our results from Luzon Island show variable ΔR values, from −39 ± 25 to 337 ± 27 ¹⁴C yr over the past 6000 years and highlight the importance of understanding temporal ΔR changes to obtain accurate radiocarbon dates for mid-Holocene samples. An abrupt shift in ΔR at ∼5.5 ka BP, in the east side of the South China Sea, can be attributed to changes in the intensity of the upwelling, in the eastern Pacific, and to the East Asian Monsoon. Additional reservoir age data from the Pacific is likely to reveal details of oceanographic and climate changes at this time.

Original language	English
Pages (from-to)	171-177
Number of pages	7
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	455
DOIs	https://doi.org/10.1016/j.nimb.2018.12.001
Publication status	Published - 15 Sept 2019

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Hirabayashi, S., Yokoyama, Y., Suzuki, A., Esat, T., Miyairi, Y., Aze, T., Siringan, F., & Maeda, Y. (2019). Local marine reservoir age variability at Luzon Strait in the South China Sea during the Holocene. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 455, 171-177. https://doi.org/10.1016/j.nimb.2018.12.001

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title = "Local marine reservoir age variability at Luzon Strait in the South China Sea during the Holocene",

abstract = "Here, we report new estimates of local marine radiocarbon reservoir ages from northwestern Luzon Island in the Philippines, on the east side of the South China Sea. Data for two periods, through the 1940{\textquoteright}s and the mid-Holocene, were derived from modern and fossil corals. Our results from Luzon Island show variable ΔR values, from −39 ± 25 to 337 ± 27 14C yr over the past 6000 years and highlight the importance of understanding temporal ΔR changes to obtain accurate radiocarbon dates for mid-Holocene samples. An abrupt shift in ΔR at ∼5.5 ka BP, in the east side of the South China Sea, can be attributed to changes in the intensity of the upwelling, in the eastern Pacific, and to the East Asian Monsoon. Additional reservoir age data from the Pacific is likely to reveal details of oceanographic and climate changes at this time.",

keywords = "Corals, Local marine reservoir age, Marine reservoir effect, Radiocarbon dating, South China Sea, U/Th dating",

author = "S. Hirabayashi and Yusuke Yokoyama and Atsushi Suzuki and T. Esat and Yosuke Miyairi and Takahiro Aze and Fernando Siringan and Y. Maeda",

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Hirabayashi, S, Yokoyama, Y, Suzuki, A, Esat, T, Miyairi, Y, Aze, T, Siringan, F & Maeda, Y 2019, 'Local marine reservoir age variability at Luzon Strait in the South China Sea during the Holocene', Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, vol. 455, pp. 171-177. https://doi.org/10.1016/j.nimb.2018.12.001

Local marine reservoir age variability at Luzon Strait in the South China Sea during the Holocene. / Hirabayashi, S.; Yokoyama, Yusuke; Suzuki, Atsushi et al.
In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 455, 15.09.2019, p. 171-177.

Research output: Contribution to journal › Article › peer-review

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T1 - Local marine reservoir age variability at Luzon Strait in the South China Sea during the Holocene

AU - Hirabayashi, S.

AU - Yokoyama, Yusuke

AU - Suzuki, Atsushi

AU - Esat, T.

AU - Miyairi, Yosuke

AU - Aze, Takahiro

AU - Siringan, Fernando

AU - Maeda, Y.

PY - 2019/9/15

Y1 - 2019/9/15

N2 - Here, we report new estimates of local marine radiocarbon reservoir ages from northwestern Luzon Island in the Philippines, on the east side of the South China Sea. Data for two periods, through the 1940’s and the mid-Holocene, were derived from modern and fossil corals. Our results from Luzon Island show variable ΔR values, from −39 ± 25 to 337 ± 27 14C yr over the past 6000 years and highlight the importance of understanding temporal ΔR changes to obtain accurate radiocarbon dates for mid-Holocene samples. An abrupt shift in ΔR at ∼5.5 ka BP, in the east side of the South China Sea, can be attributed to changes in the intensity of the upwelling, in the eastern Pacific, and to the East Asian Monsoon. Additional reservoir age data from the Pacific is likely to reveal details of oceanographic and climate changes at this time.

AB - Here, we report new estimates of local marine radiocarbon reservoir ages from northwestern Luzon Island in the Philippines, on the east side of the South China Sea. Data for two periods, through the 1940’s and the mid-Holocene, were derived from modern and fossil corals. Our results from Luzon Island show variable ΔR values, from −39 ± 25 to 337 ± 27 14C yr over the past 6000 years and highlight the importance of understanding temporal ΔR changes to obtain accurate radiocarbon dates for mid-Holocene samples. An abrupt shift in ΔR at ∼5.5 ka BP, in the east side of the South China Sea, can be attributed to changes in the intensity of the upwelling, in the eastern Pacific, and to the East Asian Monsoon. Additional reservoir age data from the Pacific is likely to reveal details of oceanographic and climate changes at this time.

KW - Corals

KW - Local marine reservoir age

KW - Marine reservoir effect

KW - Radiocarbon dating

KW - South China Sea

KW - U/Th dating

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JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

ER -

Local marine reservoir age variability at Luzon Strait in the South China Sea during the Holocene

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