The limited influence of glaciations in Tibet on global climate over the past 170 000 yr
文献类型：期刊论文
| 作者 | Schafer, JM; Tschudi, S; Zhao, ZZ; Wu, XH; Ivy-Ochs, S; Wieler, R; Baur, H; Kubik, PW; Schluchter, C |
| 刊名 | EARTH AND PLANETARY SCIENCE LETTERS
 |
| 出版日期 | 2002-01-15 |
| 卷号 | 194期号:3-4页码:287-297 |
| 关键词 | Xizang China exposure age monsoons paleoclimatology glaciation |
| DOI | 10.1016/S0012-821X(01)00573-8 |
| 文献子类 | Article |
| 英文摘要 | Extensive ice cover on the Tibetan Plateau would significantly influence Earth's climate in general and the Asian monsoon system in particular, but extent and timing of Quaternary glaciations in Tibet remain highly controversial. We dated erratics on top of moraines in the climatic key areas of Central and East Tibet using cosmogenic Be-10, Al-26, and Ne-21. Consistent exposure ages obtained by various nuclides indicate a continuous period of exposure since the deposition of the samples. Our data imply that glacial advances were restricted to a few 10 km during the last 170 kyr in Central Tibet and during the peak of the last glaciation (similar to24-13 kyr ago) in Eastern Tibet. Advances of Tibetan glaciers were much less prominent than elsewhere in the northern hemisphere most likely due to very and conditions and high sublimation rates. A proposed ice-dome covering the entire Plateau can be excluded. Thus, albedo increase of Tibet most likely did trigger neither northern hemisphere ice ages nor paleomonsoon changes during the last two glacial cycles. The glacial advance during Marine Isotope Stage 2 in East Tibet and the absence of significant glacial events during the Holocene suggest a relation of snowline lowering in East Tibet to North Atlantic cooling events rather than to periods of high precipitation by an intensified monsoon. (C) 2002 Elsevier Science B.V. All rights reserved. |
| 学科主题 | Geochemistry & Geophysics |
| WOS关键词 | EAST-ASIAN MONSOON ; PRODUCTION-RATES ; COSMOGENIC NUCLIDES ; LAST GLACIATION ; ICE-SHEET ; NEON ; SURFACES ; PAKISTAN ; STAGE-2 ; PLATEAU |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000173610300001 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.ieecas.cn/handle/361006/11869]  |
| 专题 | 黄土与第四纪地质国家重点实验室（1985-2004） |
| 推荐引用方式 GB/T 7714 | Schafer, JM,Tschudi, S,Zhao, ZZ,et al. The limited influence of glaciations in Tibet on global climate over the past 170 000 yr[J]. EARTH AND PLANETARY SCIENCE LETTERS,2002,194(3-4):287-297. |
| APA | Schafer, JM.,Tschudi, S.,Zhao, ZZ.,Wu, XH.,Ivy-Ochs, S.,...&Schluchter, C.(2002).The limited influence of glaciations in Tibet on global climate over the past 170 000 yr.EARTH AND PLANETARY SCIENCE LETTERS,194(3-4),287-297. |
| MLA | Schafer, JM,et al."The limited influence of glaciations in Tibet on global climate over the past 170 000 yr".EARTH AND PLANETARY SCIENCE LETTERS 194.3-4(2002):287-297. |
入库方式： OAI收割
来源：地球环境研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。