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| 我国末次冰消期古气候时空演化特征初探 | |
| 引用本文： | 毛雪,蒋汉朝,杨桂芳,徐红艳.我国末次冰消期古气候时空演化特征初探[J].第四纪研究,2011,31(1):57-65. |
| 作者姓名： | 毛雪 蒋汉朝 杨桂芳 徐红艳 |
| 作者单位： | 中国地质大学地球科学与资源学院,北京 100083; 中国地震局地质研究所地震动力学国家重点实验室,北京 100029 |
| 基金项目： | 中国地震局地质研究所基本科研业务专项基金项目(批准号: IGCEA0901和IGCEA1012)、国家自然科学基金项目(批准号: 40972117)和中国地震局地震动力学国家重点实验室自选课题(批准号: LED2008A02)资助 |
| 摘 要： | 为探讨我国末次冰消期古气候时空演化特征,从北到南、从西到东分别选取8个和6个已发表的持续时间较长和分辨率相对较高的古气候记录,对比分析了我国末次冰消期气候演化(以Younger Dryas和Bφlling/Allerφd 事件为主)随纬度和海拔高度变化所表现出的趋势和规律.结果显示,末次冰消期的主要事件在我国基本均有显... |
| 关 键 词： | 末次冰消期 古气候波动 时空演化特征 千年尺度 驱动机制 |
| 收稿时间： | 2010-05-29 |
| 修稿时间： | 2010-07-02 |
PRELIMINARY STUDY ON SPATIAL AND TEMPORAL CHARACTERISTICS OF PALAEOCLIMATE EVOLUTION IN CHINA DURING THE LAST DEGLACIATION |
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| Mao Xue,Jiang Hanchao,Yang Guifang,Xu Hongyan.PRELIMINARY STUDY ON SPATIAL AND TEMPORAL CHARACTERISTICS OF PALAEOCLIMATE EVOLUTION IN CHINA DURING THE LAST DEGLACIATION[J].Quaternary Sciences,2011,31(1):57-65. | |
| Authors: | Mao Xue Jiang Hanchao Yang Guifang Xu Hongyan |
| Institution: | School of Earth Sciences and Resources,China University of Geosciences,Beijing 100083; State Key Laboratory of Earthquake Dynamics, Institute of Geology,China Earthquake Administration,Beijing 100029 |
| Abstract: | To explore temporal and spatial characteristics of palaeoclimate evolution in China during the last deglaciation,fourteen published records with higher resolution and longer time duration were selected for comparison,eight from north to south(Hulun Lake in Inner Mongolia,Beijing,Midiwan in Shanxi,Sanmenxia in Henan,Hulu Cave,Dongge Cave,Huguangyan in Guangdong and the South China Sea)and six from west to east(Guliya,Chencuo in Xizang,Qinghai Lake,Midiwan in Shanxi,Beijing and Sihailongwan in Jilin),respectively.The last deglacial climatic evolution trend with latitude or altitude changes was emphasized and analyzed by highlighting Younger Dryas and Blling/Allerd events.Results show that the major climate events occurring during the last deglaciation could be observed in most places of China.As for the Northern Hemisphere,fluctuations of these climate events behaved more dramatically in high-latitudes than in low-latitudes,as well as in eastern low-altitudes than western high-altitudes in China.Accordingly,these millennial-timescale climatic shifts during the last deglaciation presumably originated from significant temperature fluctuations at northern high latitudes.The decreased fluctuations of these climatic events in middle to low latitudes were probably influenced by the increased insolation,greater buffering from the Western Pacific and rich latent heat of the underlying surface,as well as the well-developed vegetation cover.The above temporal and spatial characteristics of climatic evolution should arouse consideration when investigations are conducted on the climatic shifts in middle to low latitudes during the last deglaciation in the future. |
| Keywords: | last deglaciation palaeoclimate fluctuation spatial and temporal characteristics of evolution millennial-scale forcing mechanism |
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