Ice Age Terminations

Author:

Cheng Hai1,Edwards R. Lawrence1,Broecker Wallace S.2,Denton George H.3,Kong Xinggong4,Wang Yongjin4,Zhang Rong5,Wang Xianfeng1

Affiliation:

1. Department of Geology and Geophysics, University of Minnesota, Minneapolis, MN 55455, USA.

2. Lamont-Doherty Earth Observatory of Columbia University, 61 Route 9W, Post Office Box 1000, Palisades, NY 10964–1000, USA.

3. Department of Earth Sciences, Bryand Global Sciences Center, Climate Change Institute, University of Maine, Orono, ME 04469, USA.

4. College of Geography Science, Nanjing Normal University, Nanjing 210097, China.

5. National Oceanic and Atmospheric Administration (NOAA)/Geophysical Fluid Dynamics Laboratory, Princeton, NJ 08540, USA.

Abstract

Monsoon Cave Recordings Rocky deposits in caves in central China record the changes over time in the Asian Monsoon through the oxygen isotopic composition of the minerals from which they are formed. These deposits can be precisely dated and provide an absolute time line for climate system changes. Cheng et al. (p. 248 ; see the Perspective by Severinghaus ) present oxygen isotope data from speleothems collected from Sanbao Cave, China, for the three glacial terminations that occurred between 120,000 and 350,000 years ago. The data reveal variations in the amount of precipitation delivered by the Asian Monsoon over time. Comparison of the timing of these changes with corresponding changes in ice core and marine sedimentary records provides mechanistic insights into how variations in insolation affect ice sheets and ice age terminations.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3