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利用全谱直读等离子体光谱 (ICP AES)的分析方法精确分析了南海珊瑚的Sr Ca和Mg Ca比值 ,结合实测表层海水温度 (SST) ,标定了海南岛南部三亚海域和西沙海域两个滨珊瑚的Sr Ca和Mg Ca温度计。在此基础上 ,尝试对两个南海北部全新世时期的珊瑚进行SST记录重建。结果显示约 5 4 0aB .P .(小冰期 )西沙海域夏季月均SST较现代低约 1℃ ,而约 6 5 0 0aB .P .(大暖期 )海南岛三亚海域夏季月均SST则高出现代 1.0～ 1.5℃。
The ratios of Sr Ca and Mg Ca in the corals in the South China Sea were analyzed precisely by using full-spectrum direct-reading plasma-optical spectroscopy (ICP AES). Based on the measured surface seawater temperature (SST), the two coastal banks of Sanya and southern Xisha Islands Coral Sr Ca and Mg Ca thermometers. On this basis, we try to reconstruct the SST records of two Holocene coral in the northern South China Sea. The results showed that the monthly mean SST in the summer over the Xisha Sea of about 54 years (small ice age) was about 1 ℃ lower than that of modern times, whereas the monthly mean SST of the summer in Sanya Sea of Hainan Island was about 6500 years Generation of generation of 1.0 ~ 1.5 ℃.