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  4. 中国科学院新生代地质与环境重点实验室
High-Resolution Elemental Record From the Holocene Sediments of an Alpine Lake in the Central Altai Mountains: Implications for Arctic Sea-Ice Variations

文献类型：期刊论文

作者Sun, Qing1; Daryin, Andrei2; Zhao, Jiayu3; Xie, Manman1; Darin, Fedor4; Rakshun, Yakov4; Su, Youliang5; Dong, Haowei1; Chu, Guoqiang3,6; Wang, Shuxian1
刊名EARTH AND SPACE SCIENCE
出版日期2021-08-01
卷号8期号:8页码:13
关键词synchrotron radiation X-ray fluorescence Altai Mountains Rb Sr ratio bromine cyclic climate variations Arctic sea ice
DOI10.1029/2021EA001810
英文摘要It is well known that Arctic sea ice and Arctic amplification have played an important role in recent climate change in middle to high latitudes of the Northern Hemisphere. We present a high-resolution elemental data set, spanning the past 9,000 years, obtained using in-situ synchrotron radiation X-ray fluorescence measurements of a lake sediment core from Lake Shuang in the Altai Mountains. Based on calibration against the local instrumental climatic record, the Rb/Sr ratio of the sediments is interpreted as an indicator of weathering intensity, which is related to precipitation and temperature variations. There is very little bromine in the granites and moyites in the catchment of Lake Shuang, and the sedimentary Br is derived primarily from wet deposition originating from precipitation and enriched by biogenic processes in this open lake system. The Br variation is positively correlated with local precipitation. The Rb/Sr and Br time series show distinct decadal-scale to millennial-scale cycles that are similar to those of Arctic sea-ice variations, which implies the important role of Artic sea ice in modulating environmental change at Lake Shuang. Our results support a previous suggestion that sea ice loss would cause an increase in atmospheric water vapor content in the Arctic, resulting in the frequent incursion of cold air masses from the Arctic into middle latitudes, and leading to increased snow cover and precipitation, and vice versa. Plain Language Summary Cyclical and abrupt paleoclimatic events in the Holocene are often linked with Arctic amplification in which atmospheric changes induced by variations in solar radiation are amplified and transmitted globally via the impact of sea ice on ocean-atmosphere circulation patterns. However, a few of high-resolution regional paleoclimatic records from midlatitudes have been used to evaluate and verify this link on longer time scales. Here, we present high-resolution elemental data from the sediments of a lake in the Altai Mountains. The results show distinct decadal-scale to millennial-scale cycles that are similar to those of Arctic sea-ice variations, which implies the important role of Artic sea ice in modulating environmental change at Lake Shuang.
WOS关键词INDIAN-SUMMER MONSOON ; CENTRAL-ASIA ; WEATHERING RESPONSE ; CLIMATE-CHANGE ; PEAT SEQUENCE ; RB/SR RECORD ; DRIFT ICE ; VARIABILITY ; BROMINE ; CHINA
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDB26000000] ; National Key R&D Program of China[2017YFA0603400] ; National Natural Science Foundation of China[42030507] ; Russia Project[RFBR 18-55-53,016]
WOS研究方向Astronomy & Astrophysics ; Geology
语种英语
出版者AMER GEOPHYSICAL UNION
WOS记录号WOS:000691103000021
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Russia Project ; Russia Project ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Russia Project ; Russia Project ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Russia Project ; Russia Project ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Russia Project ; Russia Project
源URL[http://ir.iggcas.ac.cn/handle/132A11/102607]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Sun, Qing; Wang, Shuxian
作者单位1.Natl Res Ctr Geoanal, Beijing, Peoples R China
2.Russian Acad Sci, Siberian Branch, Inst Geol & Mineral, Novosibirsk, Russia
3.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China
4.Russian Acad Sci, Siberian Branch, Budker Inst Nucl Phys, Novosibirsk, Russia
5.China Earthquake Adm, Inst Geophys, Beijing, Peoples R China
6.CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Sun, Qing,Daryin, Andrei,Zhao, Jiayu,et al. High-Resolution Elemental Record From the Holocene Sediments of an Alpine Lake in the Central Altai Mountains: Implications for Arctic Sea-Ice Variations[J]. EARTH AND SPACE SCIENCE,2021,8(8):13.
APA Sun, Qing.,Daryin, Andrei.,Zhao, Jiayu.,Xie, Manman.,Darin, Fedor.,...&Wang, Shuxian.(2021).High-Resolution Elemental Record From the Holocene Sediments of an Alpine Lake in the Central Altai Mountains: Implications for Arctic Sea-Ice Variations.EARTH AND SPACE SCIENCE,8(8),13.
MLA Sun, Qing,et al."High-Resolution Elemental Record From the Holocene Sediments of an Alpine Lake in the Central Altai Mountains: Implications for Arctic Sea-Ice Variations".EARTH AND SPACE SCIENCE 8.8(2021):13.

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来源：地质与地球物理研究所

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