| 海南岛南岸三亚湾海水Sr/Ca、Mg/Ca变化及对珊瑚微量元素温度计的响应 |
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| 引用本文： | 吴伟中.海南岛南岸三亚湾海水Sr/Ca、Mg/Ca变化及对珊瑚微量元素温度计的响应[J].海洋科学,2014(3). |
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| 作者姓名： | 吴伟中 |
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| 作者单位： | 中国科学院广州地球化学研究所 |
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| 基金项目： | 国家自然科学基金项目(y102321001):利用珊瑚礁重建中全新世南海北部高分辨率气候演变记录 |
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| 摘 要： | 本文对海南岛南岸三亚湾2008~2009年海水的周间隔取样，用全谱直读等离子体原子发射光谱(ICP-AES)分析方法对其Sr/Ca、Mg/Ca比值进行了测定。结果显示其比值（Sr/Ca=8.558~9.227mmol/mol，Mg/Ca=4.924~5.403 mol/mol）与全球各大洋和主要珊瑚礁区有明显地高异常偏差，而且在春末夏初和秋末冬初两个过渡期，三亚湾海水Sr/Ca比值波动幅度比Mg/Ca相对较大，且体现了一定的差异性。在此基础上，结合海水的Sr/Ca、Mg/Ca比值在时间和地域空间上的变化对珊瑚温度计标定的影响，及对不同站点建立的珊瑚Sr/Ca温度计进行了重新校正，并与分配系数法对比分析，我们认为利用珊瑚的Sr/Ca、Mg/Ca比值重建古SST记录时必须综合考虑包括海水微量元素比值变化在内的各种影响因素对温度计标定的干扰。
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| 关 键 词： | 海水 造礁珊瑚 Sr/Ca和Mg/Ca比值 微量元素温度计 三亚湾 |
| 收稿时间： | 7/6/2012 12:00:00 AM |
Response of coral trace element thermometer from the variations of seawater Sr/Ca, Mg/Ca ratios in Sanya , South Hainan Island |
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| Wu Weizhong.Response of coral trace element thermometer from the variations of seawater Sr/Ca, Mg/Ca ratios in Sanya , South Hainan Island[J].Marine Sciences,2014(3). |
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| Authors: | Wu Weizhong |
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| Institution: | Guangzhou Institute of Geochemistry , Chinese Academy of Sciences |
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| Abstract: | The analysis method for precisely measuring the seawater Sr/Ca, Mg/Ca ratios from Sanya , South Hainan Island was established using inductively coupled plasma atomic emission spectrometry ( ICP-AES) . The samples were taken by week interval from 2008 to 2009 year. The results indicated that the variation range of seawater Sr/Ca, Mg/Ca ratios were 8.558~9.227mmol/mol, 4.924~5.403 mmol/mol, which had an obviously high abnormal deviation with the global oceans and the main coral reef. In the late spring and early summer and late autumn and early winter, the fluctuation amplitude of the seawater Sr/Ca ratios was relatively larger than Mg/Ca ratios, and both shows some differences. At the same time, influence of the coral thermometer calibration from the variations of Sr/Ca, Mg/Ca ratios in time and regional space was analyzed. On this basis, the coral Sr/Ca thermometer established in different site was re-corrected and It had compared with the distribution coefficient method, we believed that all kinds of factors including the seawater trace element ratio changes that maybe cause interference to the thermometer calibrations should be comprehensively considered when reconstructed the SST records by using the Porites corals Sr/Ca, Mg/Ca ratios. |
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| Keywords: | sea water Porites Sr/Ca and Mg/Ca ratios trace elements thermometer Sanya |
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