| 南海北部珊瑚Ba/Ca比值的季节变化及其环境意义 |
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| 引用本文： | 韦刚健,李献华,孙敏.南海北部珊瑚Ba/Ca比值的季节变化及其环境意义[J].地球化学,2000,29(1):67-72. |
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| 作者姓名： | 韦刚健 李献华 孙敏 |
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| 作者单位： | 中国科学院广州地球化学研究所!广东广州，510640，台湾大学地质学系，台北，中国科学院广州地球化学研究所!广东广州510640，香港大学地球科学系!香港，中国科学院南海海洋研究所!广东广州510301 |
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| 基金项目： | 中国科学院院长基金!KJ95-321，国家自然科学基金!49803003，香港RCG资助!to MS |
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| 摘 要： | 利用等离子体普技术分析了取自海南岛南部沿岸的现代演珊瑚高分辨率的Ｂａ／Ｃａ。结果表明，该珊瑚的Ｂａ／Ｃａ比值具有明显的双峰态的季节变化，其中春季和秋季Ｂａ／Ｃａ比值较镐，而冬、夏两季则较低。海南岛南部及邻近地区季节降雨的变化所控制的原Ｂａ输入是这些珊瑚Ｂａ／Ｃａ比值变化的重要控制因素，而该区夏季相对较镐的表层海水生产力可能也对其有重要影响。
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| 关 键 词： | 珊瑚 Ba／Ca比值 降雨 南海 季节变化 环境意义 |
Seasonal ventilation of the Ba/Ca of the porites corals from northern South China Sea:Patterns and their environmental implication |
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| WEI Gang-jian, LI Xian-hua, SUN Min, NIE Bao-fu.Seasonal ventilation of the Ba/Ca of the porites corals from northern South China Sea:Patterns and their environmental implication[J].Geochimica,2000,29(1):67-72. |
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| Authors: | WEI Gang-jian LI Xian-hua SUN Min NIE Bao-fu |
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| Abstract: | High-resolution Ba/Ca ratios of a modern Porites coral from Sanya Bay, offshore of Hainan Island, were measured by ICP-MS. The results exhibit seasonal periodical ventilation of the coralline Ba/Ca ratios with higher Ba/ca ratios in spring and autumn and lower in winter and summer. variation of the terrestrial Ba flux to this area,which was controlled by seasonal precipitation of Southern Hainan Island and surmunded areas, is the key role to these Ba/Ca patterns. On the other hand, the relatively high surface productivity of the area in summer may contribute to the lower Ba/Ca ratios of the coral. |
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| Keywords: | coral Ba/Ca ratios precipitation surface productivity South China Sea |
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