| 20万年来南海古海洋研究的主要进展 |
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| 引用本文： | 李琪,李前裕,王汝建.20万年来南海古海洋研究的主要进展[J].地球科学进展,2012,27(2):224-239. |
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| 作者姓名： | 李琪 李前裕 王汝建 |
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| 作者单位： | 同济大学海洋地质国家重点实验室,上海,200092 |
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| 基金项目： | 国家自然科学基金项目“南海南部冰期同位素记录中的季风演化信息”，国家重点基础研究发展计划项目“大洋碳循环与气候演变的热带驱动”，中国地质调查局项目“中国气候变化地质记录对全球气候变化重要事件的响应” |
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| 摘 要： | 南海第四纪古海洋学的研究,从ODP184航次以来获得了快速的发展,已经成为国内外古海洋研究的重点地区之一。试图对国内外文献作一综述,介绍近20万年以来高分辨率的南海古海洋研究进展。综述主要涉及温度、盐度、生产力和上层水体的变化,重点介绍南海季风的研究成果。南海浮游有孔虫氧同位素曲线具有MIS3.3和MIS6.5期偏轻,MIS5.5和MIS7.3期偏重的特征,已被称为"季风型氧同位素曲线"。不同于代表全球冰量变化的底栖有孔虫氧同位素曲线(即SPEC-MAP曲线),"季风型氧同位素曲线"具明显的2万年岁差周期,代表了季风降水的影响。快速气候变化事件也有较为完整的记录,揭示了热带地区在快速气候变化中也发挥着重要的作用。
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| 关 键 词： | 南海 古海洋学 温度 盐度 生产力 氧同位素曲线 |
Progress in the Paleoceanography of the South China Sea over the Last 200 ka： A Review |
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| Li Qi,Li Qianyu,Wang Rujian.Progress in the Paleoceanography of the South China Sea over the Last 200 ka： A Review[J].Advance in Earth Sciences,2012,27(2):224-239. |
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| Authors: | Li Qi Li Qianyu Wang Rujian |
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| Institution: | State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China |
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| Abstract: | The South China Sea(SCS) has achieved rapid development and become an international hot spot in the paleoceanography study since the implementation of ODP Leg 184 in 1999.This paper attempts to review the progress,especially high revolution studies on the last 200 ka in the SCS,mainly relating to changes in sea surface temperature,salinity,productivity,and the upper ocean structure,as well as paleo-monsoon records.Many SCS planktonic δ18O curves show different features from the global SPECMAP δ18O standard,with relatively low peaks at MIS5.5 and MIS7.3,but high peaks at MIS3.3 and MIS6.5,and can be called "monsoon-type planktonic δ18O curves".In contrast to the SPECMAP δ18O standard prevailed by 100 ka cycles,the monsoon type planktonic δ18O curve is dominated by 20 ka precession cycle,representing the impact of monsoon precipitation.In addition,the complete records of rapid climate change events also reveal an important role played by tropical regions in rapid climate change. |
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| Keywords: | South China Sea Paleoceanography Temperature Salinity Surface productivity Planktonic δ18O curve |
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