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学科主题: Marine & Freshwater Biology
题名: Influence of seawater Sr content on coral Sr/Ca and Sr thermometry
作者: Sun, Y ; Sun, M ; Lee, T ; Nie, B
通讯作者: minsun@hku.hk
关键词: coral ; Sr/Ca thermometry ; sea-surface temperature ; coral Ca content ; seawater Sr concentration
刊名: CORAL REEFS
发表日期: 2005
卷: 24, 期:1, 页:23-29
收录类别: sci
部门归属: Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China; Acad Sinica, Inst Earth Sci, Taipei 115, Taiwan; Chinese Acad Sci, S China Sea Inst Oceanog, Guangzhou, Peoples R China
项目归属: 海洋地质
摘要: The Ca content of a Porites coral from Xisha, South China Sea is quite uniform along its 18-year growth axis. A comparison with previously published data shows that the Ca content of corals from different sites varies by only 0.4%. This is much smaller than the variation of Ca in seawater (2.2%), indicating that Ca variations in seawater do not significantly affect the Ca compositions of coral skeletons. The variation in skeletal Ca contents results in only +/- 0.6 degrees C of uncertainty in SST calculations, which is much smaller than the large disparities observed for previously established coral Sr/Ca thermometers. In contrast, Sr in tropical seawater varies spatially by as much as 2.4%, corresponding to similar to 4 degrees C offset for coral Sr/Ca calibrations. The effect of seawater Sr variations on coral Sr/Ca thermometers is evaluated and we demonstrate that the content of seawater Sr is the major factor responsible for disparities in these coral Sr/Ca thermometers. The disparities can be significantly reduced when seawater Sr contents are included in the Sr/Ca thermometers.
WOS记录号: WOS:000227742400004
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/4878
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Recommended Citation:
Sun, Y; Sun, M; Lee, T; Nie, B.Influence of seawater Sr content on coral Sr/Ca and Sr thermometry,CORAL REEFS,2005,24(1):23-29
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文件名: Influence of seawater Sr content on coral Sr Ca and Sr thermometry .pdf
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