气候变化领域集成服务门户(CCPortal): Prebomb to Postbomb 14C History From the West Side of Palawan Island: Insights Into Oceanographic Changes in the South China Sea

CCPortal

DOI	10.1029/2019JC015979
	Prebomb to Postbomb 14C History From the West Side of Palawan Island: Insights Into Oceanographic Changes in the South China Sea
	Wu Y.; Fallon S.J.
发表日期	2020
ISSN	21699275
卷号	125 期号:6
英文摘要	Compared to the natural production of 14C, thermonuclear tests have produced a globally abnormal 14C signal. To examine and reconstruct ocean circulation in the South China Sea (SCS), we generated a prebomb to postbomb 14C time series from a Porites lobata coral from the west side of Palawan Island, Philippines. Results show a diluted early bomb 14C intrusion in late 1955. We use this record to extend our understanding of the surface ocean circulation in and around the SCS by tracing 14C labeled water from nuclear test sites. Our postbomb Δ14C peaked at 154‰ in 1975, which lags ~10 years from the atmospheric peak, consistent with other marine records. This coral record also displayed clear seasonal Δ14C cycles indicating different surface waters passed the Palawan Island coral site due to seasonal variations of the East Asian Monsoon. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	coral; East Asian monsoon; ocean circulation; radiocarbon; South China Sea
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186824
作者单位	Research School of Earth Sciences, The Australian National University, Canberra, ACT, Australia
推荐引用方式 GB/T 7714	Wu Y.,Fallon S.J.. Prebomb to Postbomb 14C History From the West Side of Palawan Island: Insights Into Oceanographic Changes in the South China Sea[J],2020,125(6).
APA	Wu Y.,&Fallon S.J..(2020).Prebomb to Postbomb 14C History From the West Side of Palawan Island: Insights Into Oceanographic Changes in the South China Sea.Journal of Geophysical Research: Oceans,125(6).
MLA	Wu Y.,et al."Prebomb to Postbomb 14C History From the West Side of Palawan Island: Insights Into Oceanographic Changes in the South China Sea".Journal of Geophysical Research: Oceans 125.6(2020).