Testing coral paleothermometers (B/Ca, Mg/Ca, Sr/Ca, U/Ca and delta O-18) under impacts of large riverine runoff
Chen Tianran; Yu Kefu; Zhao Jianxin; Yan Hongqiang; Song Yinxian; Feng Yuexing; Chen Tegu; chentianran@scsio.ac.cn
2015
发表期刊ACTA OCEANOLOGICA SINICA
卷号34期号:8页码:20-26
摘要Sea surface temperature (SST) proxies including B/Ca, Mg/Ca, Sr/Ca, U/Ca and delta O-18 were analyzed in the skeleton of a Porites coral collected from the Zhujiang River (Pearl River) Estuary (ZRE). These geochemical proxies are influenced by river runoff and this area of the northern South China Sea is strongly affected by seasonal freshwater floods. We assessed the robustness of each SST proxy through comparison with the local instrumental SST. Coral Sr/Ca shows the highest correlation with SST variations (r (2)=0.59), suggesting Sr/Ca is the most robust SST proxy. In contrast, coral delta O-18 (r (2)=0.46), B/Ca (r (2)=0.43) and U/Ca (r (2)=0.41) ratios were only moderately correlated with SST variations, suggesting that they are disturbed by some other factors in addition to SST. The poor correlation (r (2)=0.27) between SST and Mg/Ca indicates that Mg/Ca in coral skeletons is not a simple function of SST variations. This may ultimately limit the use of Mg/Ca as a coral paleothermometer.
部门归属[Chen Tianran; Yu Kefu; Yan Hongqiang; Song Yinxian; Chen Tegu] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China; [Zhao Jianxin; Feng Yuexing] Univ Queensland, Sch Earth Sci, Radiogen Isotope Lab, Brisbane, Qld 4072, Australia ; LTO
关键词Porites Coral Sst Proxies Coral Paleothermometers Riverine Runoff Zhujiang River (Pearl River) Estuary Northern South China Sea
学科领域Oceanography
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/14939
专题热带海洋环境国家重点实验室(LTO)
通讯作者chentianran@scsio.ac.cn
推荐引用方式
GB/T 7714
Chen Tianran,Yu Kefu,Zhao Jianxin,et al. Testing coral paleothermometers (B/Ca, Mg/Ca, Sr/Ca, U/Ca and delta O-18) under impacts of large riverine runoff[J]. ACTA OCEANOLOGICA SINICA,2015,34(8):20-26.
APA Chen Tianran.,Yu Kefu.,Zhao Jianxin.,Yan Hongqiang.,Song Yinxian.,...&chentianran@scsio.ac.cn.(2015).Testing coral paleothermometers (B/Ca, Mg/Ca, Sr/Ca, U/Ca and delta O-18) under impacts of large riverine runoff.ACTA OCEANOLOGICA SINICA,34(8),20-26.
MLA Chen Tianran,et al."Testing coral paleothermometers (B/Ca, Mg/Ca, Sr/Ca, U/Ca and delta O-18) under impacts of large riverine runoff".ACTA OCEANOLOGICA SINICA 34.8(2015):20-26.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。