...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System >Speleothem U-series dating of semi-synchronous climate oscillations during the last deglaciation
【24h】

Speleothem U-series dating of semi-synchronous climate oscillations during the last deglaciation

机译：最后一次冰消期间半同步气候振荡的Speleothem U系列年代

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Evidence for nearly synchronous climate oscillations during the last deglaciation has been found throughout the Northern Hemisphere but few records are based on independent time scales of calendar years. We present a rare uranium-series dated oxygen–carbon isotope record for a speleothem from Tangshan Cave, China, which demonstrates that abrupt deglacial climatic oscillations from 16800 to 10500 yr BP are semi-synchronous with those found in Greenland ice core records. Relatively rapid shifts in speleothem oxygen isotope ratios demonstrate that the intensity of the East Asian monsoon switched in parallel with the abrupt transitions separating the Bolling-Allerod, Younger Dryas, and pre-Boreal climatic reversals. However, the dated isotopic transitions appear to have lasted longer. Our results demonstrate the dominant role of atmospheric teleconnections in the rapid propagation of deglacial climatic signals on a hemispheric scale, and highlight the importance of U-series dated speleothems in the timing and characterization of abrupt climate change.
机译：在整个北半球都发现了最后一次冰消期间几乎同步的气候振荡的证据，但很少有记录基于历年的独立时间尺度。我们为中国唐山洞穴的一个蛇眼石提供了一个罕见的铀系列过时的氧碳同位素记录，该记录表明，从16800年到10500年BP突然的冰期气候振荡与格陵兰冰芯记录中的那些是半同步的。脾肢体氧同位素比率的相对快速变化表明，东亚季风的强度与突然的转变平行，同时分隔了Bolling-Allerod，Younger Dryas和北方北方的气候逆转。但是，标有日期的同位素转变似乎持续了更长的时间。我们的结果证明了大气遥相关在半球形尺度上的冰期气候信号快速传播中的主导作用，并突显了U系列过时的鞘翅目在突变和气候突变的时间特征中的重要性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号