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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
Wei, GJ; Sun, M; Li, XH; Nie, BF; Wei, GJ, Chinese Acad Sci, Guangzhou Inst Geochem, Gangjian WEI, POB 1131, Guangzhou, Peoples R China
2000
发表期刊PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
卷号162期号:40545页码:59-74
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.
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
关键词Coral Sea-surface Temperature South China Sea Mg/ca Sr/ca And U/ca Ratios
学科领域Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
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收录类别sci
资助项目海洋地质
WOS记录号WOS:000089439400004
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文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/4670
专题中科院边缘海地质重点实验室
通讯作者Wei, GJ, Chinese Acad Sci, Guangzhou Inst Geochem, Gangjian WEI, POB 1131, Guangzhou, Peoples R China
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Wei, GJ,Sun, M,Li, XH,et al. 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[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2000,162(40545):59-74.
APA Wei, GJ,Sun, M,Li, XH,Nie, BF,&Wei, GJ, Chinese Acad Sci, Guangzhou Inst Geochem, Gangjian WEI, POB 1131, Guangzhou, Peoples R China.(2000).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,162(40545),59-74.
MLA Wei, GJ,et al."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 162.40545(2000):59-74.
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