ITPCAS OpenIR  > 图书馆
Inconsistency between records of delta O-18 and trace element ratios from stalagmites: Evidence for increasing mid-late Holocene moisture in arid central Asia
Liu, XK (Liu, Xiaokang)1; Liu, JB (Liu, Jianbao)1,2,3; Shen, CC (Shen, Chuan-Chou)4,5; Yang, Y (Yang, Yan)6; Chen, JH (Chen, Jianhui)2; Chen, SQ (Chen, Shengqian)2; Wang, XF (Wang, Xianfeng)7,8; Wu, CC (Wu, Chung-Che)4,5; Chen, FH (Chen, Fahu)2
Source PublicationHOLOCENE
2019
Volume30Issue:3Pages:369-379 0959683619887431
DOI10.1177/0959683619887431
Abstract

The interpretation of trace element/calcium ratios of speleothems as indicators of local hydroclimatic variability in the vicinity of caves has led to controversy in reconstructing the evolution of moisture conditions in arid central Asia (ACA) during the Holocene. Here we present records of Mg/Ca, Sr/Ca, Ba/Ca, and U/Ca from precisely dated stalagmites from Baluk cave in Xinjiang (northwest China), spanning the past 9370 years. The co-variations of the trace element ratios, together with the slopes of the regression lines of the corresponding logarithmically transformed data, suggest that they are dominated by prior calcite precipitation (PCP) and thus can be used as reliable proxies of changes in moisture/precipitation. The trace element ratios are relatively high during 9 to 5 ka and lower from 5 ka to the present, indicating a trend of increasing mid-late Holocene moisture in ACA. The long-term trend of variation of the trace element ratios is correlative with two other records of speleothem trace element ratios from caves in ACA: Kesang cave (western Xinjiang) and Ton cave (Uzbekistan). This spatial coherency of the trend of inferred moisture conditions from three caves that are separated by hundreds of kilometers demonstrates that speleothem trace element ratios are indicative of large spatial scale rather than local hydroclimatic variability in ACA during the Holocene. However, the long-term trend of variation of the trace element ratios is the inverse of the corresponding oxygen isotope (delta O-18) records from the same cave sites, which implies that Holocene speleothem delta O-18 records do not represent changes in the precipitation amount in ACA; rather, they most likely reflect moisture sources and related water vapor transport controlled by Northern Hemisphere summer insolation (NHSI). Our findings provide new evidence for a 'westerlies-dominated climatic regime', which influenced hydroclimatic changes in ACA during the Holocene.

Subject AreaGeography
WOS IDWOS:000498515700001
Language英语
Indexed BySCI
KeywordNorthern Xinjiang Summer Monsoon Isotopic Composition Late Pleistocene Climatic Changes Wetting Trend Speleothem Cave China Lake
WOS Research AreaPhysical Geography ; Geology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
Cooperation Status国际
ISSN0959-6836
Department高寒生态重点实验室
URL查看原文
PublisherSAGE PUBLICATIONS LTD
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9083
Collection图书馆
Corresponding AuthorLiu, JB (Liu, Jianbao)
Affiliation1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers LAEB, 16 Lincui Rd, Beijing 100101, Peoples R China;
2.Lanzhou Univ, Coll Earth & Environm Sci, Minist Educ, Key Lab West Chinas Environm Syst, Lanzhou, Gansu, Peoples R China;
3.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Syst Sci, Beijing, Peoples R China;
4.Natl Taiwan Univ, Dept Geosci, High Precis Mass Spectrometry & Environm Change L, Taipei, Taiwan;
5.Natl Taiwan Univ, Res Ctr Future Earth, Taipei, Taiwan;
6.Southwest Univ, Sch Geog Sci, Chongqing Key Lab Karst Environm, Chongqing, Peoples R China;
7.Nanyang Technol Univ, Earth Observ Singapore, Singapore, Singapore;
8.Nanyang Technol Univ, Asian Sch Environm, Singapore, Singapore.
Recommended Citation
GB/T 7714
Liu, XK ,Liu, JB ,Shen, CC ,et al. Inconsistency between records of delta O-18 and trace element ratios from stalagmites: Evidence for increasing mid-late Holocene moisture in arid central Asia[J]. HOLOCENE,2019,30(3):369-379 0959683619887431.
APA Liu, XK .,Liu, JB .,Shen, CC .,Yang, Y .,Chen, JH .,...&Chen, FH .(2019).Inconsistency between records of delta O-18 and trace element ratios from stalagmites: Evidence for increasing mid-late Holocene moisture in arid central Asia.HOLOCENE,30(3),369-379 0959683619887431.
MLA Liu, XK ,et al."Inconsistency between records of delta O-18 and trace element ratios from stalagmites: Evidence for increasing mid-late Holocene moisture in arid central Asia".HOLOCENE 30.3(2019):369-379 0959683619887431.
Files in This Item:
File Name/Size DocType Version Access License
2019047.pdf(4700KB)期刊论文出版稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Liu, XK (Liu, Xiaokang)]'s Articles
[Liu, JB (Liu, Jianbao)]'s Articles
[Shen, CC (Shen, Chuan-Chou)]'s Articles
Baidu academic
Similar articles in Baidu academic
[Liu, XK (Liu, Xiaokang)]'s Articles
[Liu, JB (Liu, Jianbao)]'s Articles
[Shen, CC (Shen, Chuan-Chou)]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Liu, XK (Liu, Xiaokang)]'s Articles
[Liu, JB (Liu, Jianbao)]'s Articles
[Shen, CC (Shen, Chuan-Chou)]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 2019047.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.