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学科主题: Geography, Physical; Geosciences, Multidisciplinary; Paleontology
题名: Mg/Ca, Sr/Ca and U/Ca ratios of a porites coral from Sanya Bay, Hainan Island, South China Sea and their relationships to sea surface temperature
作者: Wei, GJ ; Sun, M ; Li, XH ; Nie, BF
通讯作者: Wei, GJ, Chinese Acad Sci, Guangzhou Inst Geochem, Gangjian WEI, POB 1131, Guangzhou, Peoples R China
关键词: coral ; Mg/Ca, Sr/Ca, and U/Ca ratios ; sea-surface temperature ; South China Sea
刊名: PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
发表日期: 2000
卷: 162, 期:40545, 页:59-74
收录类别: sci
部门归属: Chinese Acad Sci, Guangzhou Inst Geochem, Gangjian WEI, Guangzhou, Peoples R China; Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China; CAS, S China Sea Inst Oceanol, Guangzhou, Peoples R China
项目归属: 海洋地质
摘要: High-resolution Mg/Ca, Sr/Ca and U/Ca ratios are reported in the skeleton of Porites sp. collected from Sanya Bay, on the south coast of the Hainan Island, China using inductively coupled plasma mass spectrometry combined with isotope dilution technique (ICP-MS-ID). The coralline Mg/Ca ratios covary with sea-surface temperatures (SST) for the 10 year interval, giving the relationship between Mg/Ca and SST as T (degrees C) = (-14.13+/-0.31) + (8.846+/-0.068) x 10(3)Mg/Ca with the mean square weighted deviation (MSWD) of 9.7. Using this equation, we are able to reconstruct SST record with a precision better than +/-0.5 degrees C. Several Sr/Ca and U/Ca ratios show poor linear relationships with the measured SST. This study indicates that the growth rates of the coral do not significantly affect coralline Mg/Ca, Sr/Ca and U/Ca ratios. However, the high meteoric precipitation in this area, which may cause a heavy run-off from the Island, may change seawater Sr/Ca and U/Ca ratios and ruin the relationships between coralline Sr/Ca or U/Ca ratios and SST. This implies that in coastal areas like Hainan, coralline Mg/Ca ratios are valid for reconstructing the SST records, but Sr:Ca and U/Ca ratios may be suspected. (C) 2000 Elsevier Science B.V. All rights reserved.
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WOS记录号: WOS:000089439400004
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/4670
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:
Wei, GJ; Sun, M; Li, XH; Nie, BF.Mg/Ca, Sr/Ca and U/Ca ratios of a porites coral from Sanya Bay, Hainan Island, South China Sea and their relationships to sea surface temperature,PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2000,162(40545):59-74
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