| 国际第四纪地质学研究进展 |
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| 引用本文： | 周卫建,薛祥煦.国际第四纪地质学研究进展[J].地球科学进展,1995,10(2):136-142. |
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| 作者姓名： | 周卫建 薛祥煦 |
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| 作者单位： | 中国科学院西安黄土与第四纪地质研究室 |
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| 摘 要： | 与人类环境关系密切的第四纪地质学在“过去的全球变化”研究中取得了一系列重要进展，主要体现在对末次冰期旋回的高分辨率环境保护的提，高精度分析方法的建立、气候不稳定性的发现与研究以及穿越赤道的南北半球对比研究的开始等。
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| 关 键 词： | 第四纪 地质学 末次冰期旋回 气候变化 |
DEVELOPMENTS IN STUDIES OF INTERNATIONAL QUATERNARY GEOLOGY |
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| Zhou Weijian,Xue Xiangxi.DEVELOPMENTS IN STUDIES OF INTERNATIONAL QUATERNARY GEOLOGY[J].Advance in Earth Sciences,1995,10(2):136-142. |
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| Authors: | Zhou Weijian Xue Xiangxi |
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| Institution: | Xi'an Laboratory of Loess and Quaternary Geology, Academia Sinica, Xi'an 710061 |
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| Abstract: | This paper is to highlight a series of important developments in the study of "Past Global Change" in the recent years. The developments include:(1)extraction of high resolution environmental information for last glacial cycle;(2)establishment of high precision analytical methods;(3)suggestion of concepts of climatic instability and etc. (4)the start of comparison study of Northern and Southern hemispheres crossing the equator.
Through the studies of ice cores such as GRIP, GISP2 and Vostok, deep sea cores, loess and vein calcite of Devils Hole, the historic picture of climatic instability can be reconstructed. On the background of glacial-interglacial cycle that is driven by orbital foring, the large amplitudes and high rates of temperature shifts reflects that climatic system is operated by more than one switch. Furthermore, some hypotheses such as climatic frequent oscillation caused by internal non-linear feedback of atmosphere-ice sheet-ocean system, climatic instability and asymmetric aperiodic change have been proposed. |
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| Keywords: | Last glacial cycle Climatic instability Ice core Loess Vein calcite ofDerils Hole |
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