气候变化领域集成服务门户(CCPortal): Temporal variability in the Holocene marine radiocarbon reservoir effect for the Tropical and South Pacific

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DOI	10.1016/j.quascirev.2020.106613
	Temporal variability in the Holocene marine radiocarbon reservoir effect for the Tropical and South Pacific
	Hua Q.; Ulm S.; Yu K.; Clark T.R.; Nothdurft L.D.; Leonard N.D.; Pandolfi J.M.; Jacobsen G.E.; Zhao J.-X.
发表日期	2020
ISSN	0277-3791
卷号	249
英文摘要	Understanding the marine radiocarbon reservoir effect (i.e., marine radiocarbon reservoir age (R) and/or correction (ΔR)) is important for the construction of robust radiocarbon chronologies for marine archives for various research areas including archaeology, palaeoecology, paleoceanography, Quaternary research and climate change studies. In this study, we examined temporal ΔR variability for the South China Sea (SCS) and the Great Barrier Reef (GBR) during the past ∼8.1 ka based on 14C analysis of 230Th-dated corals. Results show large ΔR variations of ∼410 yr and ∼490 yr for the SCS and the northern GBR for ∼5.5–8.1 ka and ∼5.5–7 ka, respectively, and a smaller ΔR variability of ∼200 yr for the SCS for ∼2–3.5 ka. Our data, together with those previously published for the Tropical and South Pacific, indicate that variability in ocean upwelling bringing old subsurface waters to the surface and/or changes in the sources (or 14C level) of the upwelled waters are responsible for seeing large ΔR variations in coastal areas along the eastern Pacific and the Tropical East Pacific (TEP) of several hundred to a thousand years mostly during the Early to Middle Holocene. ΔR variations in the central and western Pacific of several and a couple of hundred years during the Middle and Late Holocene, respectively, might be due to variability in Pacific-wide ocean circulation associated with climatic changes controlling the spread of upwelled waters from the TEP to the west. This mechanism together with local/regional effects, such as changes in ocean upwelling in the SCS resulting from East Asian monsoon variability and changes in upwelling and/or horizontal advection in the northern GBR associated with variability in the El Niño Southern Oscillation, might be responsible for the observed ΔR variations in these areas. The results of our study also indicate the need for regional marine radiocarbon calibration curves for improved radiocarbon dating of marine samples as the observed Holocene ΔR values for the Tropical and South Pacific are not fully reproduced by a recent modelling work using a 3D ocean model, which takes into account climate change effects. Ocean circulation changes were included in the model for the period of 11.5–50 cal kyr BP but possibly not considered or not well represented for the Holocene, which might explain the differences between the observed and modelled ΔR values. © 2020
英文关键词	Climate change; Corals; Holocene; Marine radiocarbon reservoir effect; Ocean circulation; Pacific ocean; U–Th dating; ΔR
语种	英语
scopus关键词	3D modeling; Atmospheric pressure; Climate models; Oceanography; Reservoirs (water); Tropics; East Asian monsoon; Great Barrier Reef; Horizontal advection; Radiocarbon calibration; Radiocarbon dating; Southern oscillation; Subsurface waters; Temporal variability; Climate change; chronology; climate change; coral; Holocene; marine environment; radiocarbon dating; reservoir; temporal variation; upwelling; Australia; Coral Sea; Great Barrier Reef; Pacific Ocean; Pacific Ocean (East); Pacific Ocean (South); Pacific Ocean (Tropical); Queensland; South China Sea; Anthozoa
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151253
作者单位	Australian Nuclear Science and Technology Organisation, Locked Bag 2001, Kirrawee DC, NSW 2232, Australia; ARC Centre of Excellence for Australian Biodiversity and Heritage, College of Arts, Society and Education, James Cook University, PO Box 6811, Cairns, QLD 4870, Australia; Guangxi Laboratory on the Study of Coral Reefs in the South China Sea and Coral Reef Research Centre of China, Guangxi University, Nanning, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), China; School of Earth, Atmospheric and Life Sciences, University of Wollongong, Northfields Avenue, Wollongong, NSW 2522, Australia; School of Earth and Environmental Sciences, The University of Queensland, Brisbane, QLD 4072, Australia; School of Earth and Atmospheric Sciences, Queensland University of Technology, GPO Box 2434, Brisbane, QLD 4001, Australia; ARC Centre of Excellence for Coral Reef Studies, School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
推荐引用方式 GB/T 7714	Hua Q.,Ulm S.,Yu K.,et al. Temporal variability in the Holocene marine radiocarbon reservoir effect for the Tropical and South Pacific[J],2020,249.
APA	Hua Q..,Ulm S..,Yu K..,Clark T.R..,Nothdurft L.D..,...&Zhao J.-X..(2020).Temporal variability in the Holocene marine radiocarbon reservoir effect for the Tropical and South Pacific.Quaternary Science Reviews,249.
MLA	Hua Q.,et al."Temporal variability in the Holocene marine radiocarbon reservoir effect for the Tropical and South Pacific".Quaternary Science Reviews 249(2020).