我国末次冰消期古气候时空演化特征初探

被引：8

作者：

毛雪 ^{[1
,2
]}

蒋汉朝 ^{[2
]}

杨桂芳 ^{[1
]}

徐红艳 ^{[2
]}

机构：

[1] 中国地质大学地球科学与资源学院

[2] 中国地震局地质研究所地震动力学国家重点实验室

来源：

第四纪研究 | 2011年 / 31卷 / 01期

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;

D O I：

暂无

中图分类号：

P532 [古气候学];

学科分类号：

070903 ;

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示。这些气候事件在北方高纬度地区比南方低纬度地区、东部低海拔地区比西部高海拔地区表现更强烈。推测末次冰消期北半球千年尺度气候变化信号来自高纬度显著温度波动。中低纬度地区这些气候事件波动减小可能与太阳辐射总量大、附近西太平洋和下垫面潜热缓冲大以及受东亚夏季风影响的植被盖度高等因素有关。这在探讨我国中低纬度末次冰消期气候变化时应该引起重视。

引用

页码：57 / 65

页数：9

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