Microcodium in Chinese loess as a recorder for the oxygen isotopic composition of monsoonal rainwater
文献类型：期刊论文
| 作者 | Yan, Hong1; An, Zhisheng1; Li, Gaojun3; Zhang, Zeke1,2,3 |
| 刊名 | QUATERNARY INTERNATIONAL
 |
| 出版日期 | 2018-01-15 |
| 卷号 | 464期号:2018页码:364-369 |
| 关键词 | Chinese Loess Plateau Climate Change Paleosol East Asia Monsoon Precipitation Delta O-18 |
| DOI | 10.1016/j.quaint.2017.10.050 |
| 文献子类 | Article |
| 英文摘要 | Records of Asia Summer Monsoon (ASM) from the Chinese loess and the speleothem display distinct features. The very different proxies that were applied to the two archives may be responsible for this discrepancy. A direct comparison between the speleothem and the loess records under the same proxy system of rainwater delta O-18 may help to resolve this puzzle. Here we show that the calcified microcodium in the loess deposits may record the oxygen isotopic composition of the summer rainwater. A microcodium based delta O-18 record covering the past 140 kyrs was generated, which shows similar magnitude of the overall variation to that of the speleothem records. However, much weaker precession variability was registered in the microcodium record during the last interglacial period. Instead, the microcodium delta O-18 record is more consistent with the widely used summer monsoon proxy of magnetic susceptibility in the loess deposits with clear glacial-interglacial pattern. This similarity may originate from the low sedimentation rate of the interglacial paleosol layer that preferentially record the peak ASM signals on the precession band. It is also possible that the orbital variability of ASM between the North China and South China is inherently different with more ice-volume related influence in the north. A longer microcodium delta O-18 record in sequences of higher sedimentation rate and a reliable record of summer rainfall may help to resolve these possibilities. (C) 2017 Elsevier Ltd and INQUA. All rights reserved. |
| WOS关键词 | ICE-AGE TERMINATIONS ; EAST-ASIAN MONSOON ; MILLENNIAL-SCALE ; PEDOGENIC CARBONATE ; PALEOSOL CARBONATE ; GLOBAL MONSOON ; NORTHERN CHINA ; CLIMATE-CHANGE ; HULU CAVE ; PRECIPITATION |
| WOS研究方向 | Physical Geography ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000425236100005 |
| 源URL | [http://ir.ieecas.cn/handle/361006/5236]  |
| 专题 | 地球环境研究所_古环境研究室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Nanjing Univ, Dept Earth Sci, MOE Key Lab Surficial Geochem, 163 Xianlindadao, Nanjing 210023, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, Hong,An, Zhisheng,Li, Gaojun,et al. Microcodium in Chinese loess as a recorder for the oxygen isotopic composition of monsoonal rainwater[J]. QUATERNARY INTERNATIONAL,2018,464(2018):364-369. |
| APA | Yan, Hong,An, Zhisheng,Li, Gaojun,&Zhang, Zeke.(2018).Microcodium in Chinese loess as a recorder for the oxygen isotopic composition of monsoonal rainwater.QUATERNARY INTERNATIONAL,464(2018),364-369. |
| MLA | Yan, Hong,et al."Microcodium in Chinese loess as a recorder for the oxygen isotopic composition of monsoonal rainwater".QUATERNARY INTERNATIONAL 464.2018(2018):364-369. |
入库方式： OAI收割
来源：地球环境研究所
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