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

doi:10.1016/j.apgeochem.2021.105105

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 黄土与第四纪地质国家重点实验室（2010~）

	Abnormally warm-saline alkenone signature in Lake Tuosu in centennial cold-wet periods over the late Holocene: An exceptional case for alkenone application
	He, Yuxin 1; Zhao, Qingfeng 1; Li, Xiangzhong 2,3,4; Li, Jiang 2; Qin, Luo 2; E, Chongyi 4
刊名	APPLIED GEOCHEMISTRY
	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
DOI	10.1016/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.
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关键词	LONG-CHAIN-ALKENONES ; TEMPERATURE SENSITIVITY ; SURFACE SEDIMENTS ; ICE-AGE ; DISTRIBUTIONS ; DEGRADATION ; CALIBRATION ; PALEOTEMPERATURE ; PRECIPITATION ; QINGHAI
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000708124000008
资助机构	National Natural Science Foun-dation of China ; Young Elite Scientists Sponsorship Program by CAST
内容类型	期刊论文
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.