兰州大学机构库 >资源环境学院
The transfer of seasonal isotopic variability between precipitation and drip water at eight caves in the monsoon regions of China
Duan, WH; Ruan, JY; Luo, WJ; Li, TY; Tian, LJ; Zeng, GN; Zhang, DZ; Bai, YJ; Li, JL; Tao, T; Zhang, PZ; Baker, A; Tan, M; Tan, M (reprint author), Chinese Acad Sci, Key Lab Cenozo Geol & Environm, Inst Geol & Geophys, Beijing 100864, Peoples R China.
2016-06-15
Source PublicationGEOCHIMICA ET COSMOCHIMICA ACTA   Impact Factor & Quartile
ISSN0016-7037
Volume183Pages:250-266
AbstractThis study presents new stable isotope data for precipitation (delta O-18(p)) and drip water (delta O-18(d)) from eight cave sites in the monsoon regions of China (MRC), with monthly to bi-monthly sampling intervals from May-2011 to April-2014, to investigate the regional-scale climate forcing on delta O-18(p) and how the isotopic signals are transmitted to various drip sites. The monthly delta O-18(p) values show negative correlation with surface air temperature at all the cave sites except Shihua Cave, which is opposite to that expected from the temperature effect. In addition, although the monthly delta O-18(p) values are negatively correlated with precipitation at all the cave sites, only three sites are significant at the 95% level. These indicate that, due to the various vapor sources, a large portion of variability in delta O-18(p) in the MRC cannot be explained simply by either temperature or precipitation alone. All the thirty-four drip sites are classified into three types based on the delta O-18(d) variability. About 82% of them are static drips with little discernable variation in delta O-18(d) through the whole study period, but the drip rates of these drips are not necessary constant. Their discharge modes are site-specific and the oxygen isotopic composition of the stalagmites growing from them may record the average of multi-year climatic signals, which are modulated by the seasonality of recharge and potential effects of evaporation, and in some cases infiltration from large rainfall events. About 12% of the thirty-four drip sites are seasonal drips, although the amplitude of delta O-18(d) is narrower than that of delta O-18(p), the monthly response of delta O-18(d) to coeval precipitation is not completely damped, and some of them follow the seasonal trend of delta O-18(p) very well. These drips may be mainly recharged by present-day precipitation, mixing with some stored water. Thus, the stalagmites growing under them may record portions of the seasonal climatic signals embedded in delta O-18(p). About 6% of the thirty-four drip sites are medium-variability drips, with constant and relatively low delta O-18(d) values in the wet season, but with variable and relatively high delta O-18(d) values in the dry season, reflecting flow switching in the karst or evaporation inside the cave. (C) 2016 Elsevier Ltd. All rights reserved.
KeywordEight Caves In chIna Three-year Cave Monitoring Stable Isotopes Of Precipitation And Drip Water
Subject AreaGeochemistry & Geophysics
PublisherELSEVIER
DOI10.1016/j.gca.2016.03.037
Publication PlaceOXFORD
Indexed BySCIE
Language英语
First Inst
Funding Project国家自然科学基金项目
Project NumberNational Natural Science Foundation of China [41030103] ; CAS Strategic Priority Research Program [XDA05080501]
WOS IDWOS:000376168000015
Funding OrganizationNSFC
SubtypeArticle
IRIDWOS:000376168000015
Department
[Duan, Wuhui;
Tian, Lijun;
Tao, Tao;
Tan, Ming] Chinese Acad Sci, Key Lab Cenozo Geol & Environm, Inst Geol & Geophys, Beijing 100864, Peoples R China;
[Ruan, Jiaoyang;
Li, Jilong] China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China;
[Ruan, Jiaoyang] Lab Sci Climat & Environm, Gif Sur Yvette, France;
[Luo, Weijun;
Zeng, Guangneng] Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Beijing 100864, Peoples R China;
[Li, Tingyong] Southwest Univ, Sch Geog Sci, Nanjing, Peoples R China...更多
Citation statistics
Cited Times:86[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/182329
Collection资源环境学院
Corresponding AuthorDuan, WH; Tan, M (reprint author), Chinese Acad Sci, Key Lab Cenozo Geol & Environm, Inst Geol & Geophys, Beijing 100864, Peoples R China.
Recommended Citation
GB/T 7714
Duan, WH,Ruan, JY,Luo, WJ,et al. The transfer of seasonal isotopic variability between precipitation and drip water at eight caves in the monsoon regions of China[J]. GEOCHIMICA ET COSMOCHIMICA ACTA,2016,183:250-266.
APA Duan, WH.,Ruan, JY.,Luo, WJ.,Li, TY.,Tian, LJ.,...&Tan, M .(2016).The transfer of seasonal isotopic variability between precipitation and drip water at eight caves in the monsoon regions of China.GEOCHIMICA ET COSMOCHIMICA ACTA,183,250-266.
MLA Duan, WH,et al."The transfer of seasonal isotopic variability between precipitation and drip water at eight caves in the monsoon regions of China".GEOCHIMICA ET COSMOCHIMICA ACTA 183(2016):250-266.
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