晚更新世东亚古季风变化动力机制的概念模型

• 作 者: 丁仲礼 刘东生
• 机 构: 中国科学院地质研究所!北京100029,中国科学院地质研究所!北京100029
• 出 处: 科学通报
• 发表日期: 1998年02期
• 关键词: 古季风 中国黄土 末次冰期 冰量 间冰期气候 晚更新世 冬季风 夏季风 季风环流 气候记录

以黄土记录为基础 ,总结出东亚古季风在晚第四纪时期变化的 5个主要特征 :(ⅰ ) 0 .1Ma为东亚冬夏古季风变化的主导周期 ;(ⅱ )东亚古季风变化的特征周期同印度季风有较大差异 ;(ⅲ )东亚古季风变化相对于太阳辐射 ,有一个约 5ka的时间滞后 ;(ⅳ )从末次冰期的早期到晚期 ,有一个冬季风逐渐增强 ,夏季风逐渐减弱的总体趋势 ;(ⅴ )在整个东亚季风区 ,冰期 间冰期气候波动幅度有从南到北迅速增加的趋势 .为解释以上特征 ,提出东亚古季风变化全球冰量控制的观点 ,并初步构建了一个概念模型

Based on the loess records, five main characteristics of the East Asian monsoon during the Late Quaternary are summarized: (i) 0.1 Ma is the dominant period of the East Asian summer monsoon change; (ii) The characteristic period of the East Asian monsoon change (Iii) there is a lag of about 5 ka relative to solar radiation over the East Asian monsoon; (iv) From the early to late last glaciations, there is a gradual increase in the winter monsoon and a gradual decrease in the summer monsoon (Ⅴ) In the entire East Asian monsoon region, during the ice period, the fluctuation of glacial climate increased rapidly from south to north.In order to explain the above characteristics, the author put forward the viewpoint of controlling the global ice volume in the East Asian monsoon, A conceptual model