| 青藏高原及邻区晚更新世-全新世冰川活动的年代学及影响因素 |
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| 引用本文： | 姜英,陈建军.青藏高原及邻区晚更新世-全新世冰川活动的年代学及影响因素[J].地质科学,2009,44(1):159-182. |
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| 作者姓名： | 姜英 陈建军 |
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| 作者单位： | 1. 北京大学城市与环境学院, 北京, 100871;
2. 北京大学地球与空间科学学院, 北京, 100871 |
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| 摘 要： | 山岳冰川发育是否同步于北半球冰期，西风与季风对山岳冰川发育的控制作用是青藏高原及周边山地的冰川年代学研究的关键.近年来就地宇宙成因核素和光释光测年技术的快速发展为山岳冰川发育规律研究提供了大量的数据支持.本文综合分析了近年来在青藏高原和周边山地获得的冰川年代学数据，发现该地区山岳冰川发育与北半球冰期不同步，冰川发育贯穿于整个MIS 3阶段.在MIS 2阶段冰川活动峰期明显滞后于北半球末次冰期冰盛期.但是，山岳冰川对Heinrich Event 1和Younger Dryas两次快速气候波动事件有显著响应.这可能说明了西风作为纽带可以将北大西洋气候变化与青藏高原联系起来，同时，来自南方的季风对高原冰川的发育也有着重要的控制作用.造山带地区的冰川进退与高原抬升、地貌及气候之间是一个复杂的耦合系统.
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| 关 键 词： | 冰川活动 年代学 控制因素 晚更新世一全新世 青藏高原及邻区 |
| 收稿时间： | 2007-10-17 |
| 修稿时间： | 2007-10-17; |
Chronology and controlling factors of Late Pleistocene-Holocene glacial actions in the Qinghai-Tibetan plateau and its environs |
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| Jiang Ying,Chen Jianjun.Chronology and controlling factors of Late Pleistocene-Holocene glacial actions in the Qinghai-Tibetan plateau and its environs[J].Chinese Journal of Geology,2009,44(1):159-182. |
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| Authors: | Jiang Ying Chen Jianjun |
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| Institution: | 1. School of Civil and Environment, Peking University, Beijing 100871;
2. School of Earth and Space Sciences, Peking University, Beijing 100871 |
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| Abstract: | It has been proposed that mountain glacier development is asynchronous with the northern hemisphere glaciations.Particularly,the westerly and Asian monsoon play an important role in controlling glacier development in the Tibetan plateau and bordering mountains.The recent development of in-situ cosmogenic nuclide(TCN)and optically stimulated luminescence(OSL) technologies has made large quantity of high quality data available providing an unprecedented chance for mountain glacial chronology study.Based on these data,this paper analyzed systematically the spatial-time developing of glacial actions in the plateau areas since the Late Pleistocene.We found that the development of mountain glaciers was asynchronous with the northern hemisphere cold stages.The glacier developed all over MIS 3.In MIS 2,there was a visible lag between mountain glacier development and the Last Glaciation Maximum in northern hemisphere.However, mountain glaciers significantly responded to Heinrich Event I and Younger Dryas.The knowledges implied that the climate in the Tibetan plateau might be teleconnected with that of Northern Atlantics through westerly.Meanwhile,the monsoon from the south exerted an important control as well.The glacial actions, plateau uplift, topography and climate should be a complicated and coupling system in orogenic areas. |
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| Keywords: | Glacial actions Chronology Controlling factors Pleistocene-Holocene The Qinghai-Tibetan plateau and its environs |
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