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Abnormally warm-saline alkenone signature in Lake Tuosu in centennial cold-wet periods over the late Holocene: An exceptional case for alkenone application

文献类型：期刊论文

作者He, Yuxin1; Zhao, Qingfeng1; Li, Xiangzhong2,3,4; Li, Jiang2; Qin, Luo2; E, Chongyi4
刊名APPLIED GEOCHEMISTRY
出版日期2021-11-01
卷号134页码:9
关键词Northern Tibetan plateau Lake tuosu Alkenones Temperature Salinity Late Holocene
ISSN号0883-2927
DOI10.1016/j.apgeochem.2021.105105
通讯作者He, Yuxin(yxhe@zju.edu.cn) ; Li, Xiangzhong(xzhli04@163.com)
英文摘要Paleoclimatic reconstructions on the arid/semi-arid northern Tibetan Plateau are important for understanding the complex interactions between the mid-latitude westerly and subtropical Asian monsoon circulations. The development of paleoclimatic reconstructions largely relies on the invention and application of proper quantitative/semi-quantitative temperature and salinity proxies. Over the last few decades, alkenones have shown great potential as indicators of the past temperatures and salinities of lakes on the northern Tibetan Plateau. Several alkenone-based temperature and salinity records have confirmed centennial warm-dry and cold-wet variations during the Holocene on the northern Tibetan Plateau. Herein, we present alkenone-based records from Lake Tuosu in the Qaidam Basin over the last similar to 1200 years. The alkenone signals show similar characteristics to published alkenone records in the nearby region during centennial warm periods (the Medieval Warm Period and Current Warm Period). However, the alkenones from Lake Tuosu demonstrate abnormally warm and saline signals during centennial cold periods (mainly during the Little Ice Age), in contrast to the widely recognized cold-wet conditions in the Qaidam Basin. Accordingly, the alkenone records from Lake Tuosu provide an exceptional case for the application of alkenones. The abnormally warm and saline alkenone signals from Lake Tuosu during centennial cold periods cannot be explained by either the presence of the C-37:3 alkenone isomer or seasonal bias in alkenone production. Changes in species composition might be an alternative reason for this, which requires a further investigation of the sources of alkenones in lakes in the future.
WOS关键词LONG-CHAIN-ALKENONES ; TEMPERATURE SENSITIVITY ; SURFACE SEDIMENTS ; ICE-AGE ; DISTRIBUTIONS ; DEGRADATION ; CALIBRATION ; PALEOTEMPERATURE ; PRECIPITATION ; QINGHAI
资助项目National Natural Science Foun-dation of China[41877332] ; National Natural Science Foun-dation of China[41888101] ; National Natural Science Foun-dation of China[41672163] ; Young Elite Scientists Sponsorship Program by CAST[2018QNRC001]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000708124000008
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构National Natural Science Foun-dation of China ; Young Elite Scientists Sponsorship Program by CAST
源URL[http://ir.ieecas.cn/handle/361006/17115]  
专题地球环境研究所_黄土与第四纪地质国家重点实验室（2010~）
通讯作者He, Yuxin; Li, Xiangzhong
作者单位1.Zhejiang Univ, Sch Earth Sci, Key Lab Geosci Big Data & Deep Resource Zhejiang, Hangzhou 310027, Peoples R China
2.Yunnan Univ, Yunnan Key Lab Earth Syst Sci, Kunming 650500, Yunnan, Peoples R China
3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
4.Minist Educ, Key Lab Tibetan Plateau Land Surface Proc & Ecol, Xining 810016, Peoples R China
推荐引用方式
GB/T 7714		 He, Yuxin,Zhao, Qingfeng,Li, Xiangzhong,et al. Abnormally warm-saline alkenone signature in Lake Tuosu in centennial cold-wet periods over the late Holocene: An exceptional case for alkenone application[J]. APPLIED GEOCHEMISTRY,2021,134:9.
APA He, Yuxin,Zhao, Qingfeng,Li, Xiangzhong,Li, Jiang,Qin, Luo,&E, Chongyi.(2021).Abnormally warm-saline alkenone signature in Lake Tuosu in centennial cold-wet periods over the late Holocene: An exceptional case for alkenone application.APPLIED GEOCHEMISTRY,134,9.
MLA He, Yuxin,et al."Abnormally warm-saline alkenone signature in Lake Tuosu in centennial cold-wet periods over the late Holocene: An exceptional case for alkenone application".APPLIED GEOCHEMISTRY 134(2021):9.

入库方式： OAI收割

来源：地球环境研究所

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