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Sr/Ca profile of long-lived Tridacna gigas bivalves from South China Sea: A new high-resolution SST proxy
Yan, H (Yan, Hong)[ 1,2 ]; Shao, D (Shao, Da)[ 2 ]; Wang, YH (Wang, Yuhong)[ 3 ]; Sun, LG (Sun, Liguang)[ 2 ]
2013-07-01
发表期刊GEOCHIMICA ET COSMOCHIMICA ACTA
卷号112页码:52-56
文章类型期刊论文
摘要

High-resolution delta O-18 and Sr/Ca ratio profiles of a modern (live-caught) and a fossil (dead-collected) giant bivalve shell (Tridacna gigas) from northern South China Sea were analyzed. The high-resolution delta O-18 profiles, as documented in most of previous studies, showed pronounced seasonal cycles and recorded the combined influence of seawater delta O-18 and sea surface temperature. The Sr/Ca ratio profiles derived from ICP-OES had well-defined annual cycles and significant and negative correlation with sea surface temperature, while the Sr/Ca profiles derived from LA-ICP-MS did not reveal clear annual cycles. This difference was likely caused by the organics contents in T. gigas shells, which had a chemical composition different than CaCO3 crystals and a heterogeneous distribution across the shell, the sampling methods, and the experimental errors. Two calibration equations between Sr/Ca ratios, determined by ICP-OES, of modern T. gigas shell and instrumental SST were calculated based on all monthly and extremum SST data, and the equation from extremum data produced better SST predictions. These results suggested that the high-resolution ICP-OES derived Sr/Ca ratios of T. gigas in the South China Sea had the potential of providing a good proxy of historical SST.

DOI10.1016/j.gca.2013.03.007
收录类别SCI
语种英语
引用统计
被引频次:33[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/10031
专题古环境研究室
通讯作者Sun, LG (Sun, Liguang)[ 2 ]
作者单位1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, China;
2.Institute of Polar Environment, University of Science and Technology of China, Hefei, Anhui 230026, China;
3.Advanced Management Research Center, Ningbo University, 818 FengHua Road, Ningbo 315211, China
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Yan, H ,Shao, D ,Wang, YH ,et al. Sr/Ca profile of long-lived Tridacna gigas bivalves from South China Sea: A new high-resolution SST proxy[J]. GEOCHIMICA ET COSMOCHIMICA ACTA,2013,112:52-56.
APA Yan, H ,Shao, D ,Wang, YH ,&Sun, LG .(2013).Sr/Ca profile of long-lived Tridacna gigas bivalves from South China Sea: A new high-resolution SST proxy.GEOCHIMICA ET COSMOCHIMICA ACTA,112,52-56.
MLA Yan, H ,et al."Sr/Ca profile of long-lived Tridacna gigas bivalves from South China Sea: A new high-resolution SST proxy".GEOCHIMICA ET COSMOCHIMICA ACTA 112(2013):52-56.
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