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近3000a来东亚冬季风变化在南海北部陆架泥质区的记录 被引量:2

East Asian Winter Monsoon records from the mud area,northern shelf of the South China Sea over the last 3000 years
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摘要 通过对位于南海北部陆架泥质区ZJ2孔进行AMS14C测试和粒度分析,从中提取出了对沉积环境敏感的粒度组分进行了研究,结果表明:该敏感组分的粒级含量和平均粒径变化主要受东亚冬季风的强弱变化制约。根据该粒度指标,发现近3 000a以来东亚冬季风存在8次增强的记录,与格陵兰冰芯的记录有着较好的一致性,且在其他不同区域亦能找到相对应的气候变化证据,揭示了全球气候变化的区域性响应。 Environment Sensitive Grain-Size Component (ESGSC) extracted from grain-size data of core ZJ2 from the mud area, northern shelf of the South China Sea, can be used to indicate the variations of East Asian Winter Monsoon (EAWM), with high (low) content/mean-size of ESGSC denoting the strong (weak) EAWM. Combined with AMS 14C datings, core ZJ2 implies 8 strong EAWM periods over the last 3 000 a, which corresponds well to climatic change records in Greenland ice core and nearby area. The result shows regional impact of the global climatic change.
出处 《海洋学研究》 北大核心 2012年第3期56-62,共7页 Journal of Marine Sciences
基金 国家自然科学基金青年基金资助项目(41106045) “我国近海海洋综合调查与评价”专项资助项目(908-01-CJ17) 国家海洋局第二海洋研究所基本科研业务费专项资金资助项目(JT1102)
关键词 南海北部陆架 泥质区 东亚冬季风 沿岸流 环境敏感粒度组分 northern shelf of the South China Sea mud area East Asian Winter Monsoon(EAWM) coastal current Environment Sensitive Grain-Size Component(ESGSC)
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