Teleconnection of climatic events between East Asia and polar, high latitude areas during the last deglaciation
Teleconnection of climatic events between East Asia and polar, high latitude areas during the last deglaciation
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DOI：
10.1016/s0031-0182(99)00041-3
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发表时间：
1999-08
期刊：
影响因子：
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通讯作者：
Weijian Zhou;M. Head;Xuefeng Lu;Z. An;A. Jull;D. Donahue
中科院分区：
文献类型：
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作者：
Weijian Zhou;M. Head;Xuefeng Lu;Z. An;A. Jull;D. Donahue
通过对连续风成和沼泽沉积物序列的观测，再加上详细的14c年代学、δ13C和有机C分析，我们可以证明东亚季风古气候事件在世纪到千年尺度上的波动。我们还推断出末次消冰期降水的显著变率。在欧洲已经确认的主要气候带，在东亚也发现了相应的气候带，b ølling - allero ød（公元前14,750-12,800 calyr）和新仙女木（公元前12,800-11,600 calyr）。末次消冰沉积序列的特征是频繁的相变化，反映了气候的不稳定性。这些频繁、突然的气候事件与高纬度和极地地区记录的波动密切相关，如格陵兰冰芯GISP 2和北海冰芯所代表的那样。这表明高纬度和极区与东亚季风区之间通过冷气团活动和相关的大气压力系统存在古气候遥相关。
From observations of continuous aeolian and swamp sediment sequences, augmented by a detailed14C chronology, δ13C and organic C analyses, we can demonstrate century- to millennium-scale fluctuations in East Asian monsoon palaeoclimatic events. We also infer significant precipitation variability within the last deglaciation. The major climatic zones that have been recognised in Europe, and find counterparts in East Asia are, the Bølling–Allerød (14,750–12,800 cal yr B.P.), and the Younger Dryas (12,800–11,600 cal yr B.P.). The last deglaciation sediment sequences are characterised by frequent facies changes reflecting climate instability. These frequent, abrupt climatic events correlate well with fluctuations recorded in high latitude and polar areas, as represented by the Greenland ice core GISP 2 and a core from the North Sea. This indicates a palaeoclimate teleconnection between the high latitude and polar areas and the East Asian monsoon areas through cold air mass activity, and the related atmospheric pressure system.