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Instability of seawater pH in the South China Sea during the mid-late Holocene: Evidence from boron isotopic composition of corals
Liu, Yi1,2; Liu, Weiguo2; Peng, Zicheng1; Mao, Yingkai3; Wei, Gangjian4; Sun, Weidong4; He, Jianfeng1; Liu, Guijian1; Chou, Chen-Lin5
2009-03-01
Source PublicationGEOCHIMICA ET COSMOCHIMICA ACTA
Volume73Issue:5Pages:1264-1272
SubtypeArticle
AbstractWe used positive thermal ionization mass spectrometry (PTIMS) to generate high precision delta B-11 records in Porites corals of the mid-late Holocene from the South China Sea (SCS). The delta B-11 values of the Holocene corals vary significantly, ranging from 22.2 parts per thousand to 25.5 parts per thousand. The paleo-pH records of the SCS, reconstructed from the delta B-11 data, were not stable as previously thought but show a gradual increase from the Holocene thermal optimal and a sharp decrease to modern values. The latter is likely caused by the large amount of anthropogenic CO2 emissions since the Industrial Revolution but variations of atmospheric pCO(2) cannot explain the pH change of the SCS before the Industrial Revolution. We suggest that variations of monsoon intensity during the mid-late Holocene may have driven the sea surface pH increase from the mid to late Holocene. Results of this study indicate that the impact of anthropogenic atmospheric CO2 emissions may have reversed the natural pH trend in the SCS since the mid-Holocene. Such ocean pH records in the current interglacial period can help us better understand the physical and biological controls on ocean pH and possibly predict the long-term impact of climate change on future ocean acidification. (C) 2008 Elsevier Ltd. All rights reserved.
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordCARBON-DIOXIDE CONCENTRATIONS ; EAST-ASIAN MONSOON ; SURFACE OCEAN PH ; PALEO-PH ; SCLERACTINIAN CORALS ; EQUATORIAL PACIFIC ; DELTA-O-18 RECORDS ; BORIC ACIDS ; FORAMINIFERA ; FRACTIONATION
Indexed BySCI
Language英语
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000263714300004
Citation statistics
Cited Times:31[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/5904
Collection青海盐湖研究所知识仓储
Affiliation1.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Peoples R China
2.Chinese Acad Sci, Key Lab Loess & Quaternary Geol, Xian 710054, Peoples R China
3.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China
4.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Isotope Geochronol, Guangzhou 510640, Peoples R China
5.Univ Illinois, Illinois State Geol Survey, Champaign, IL 61820 USA
Recommended Citation
GB/T 7714
Liu, Yi,Liu, Weiguo,Peng, Zicheng,et al. Instability of seawater pH in the South China Sea during the mid-late Holocene: Evidence from boron isotopic composition of corals[J]. GEOCHIMICA ET COSMOCHIMICA ACTA,2009,73(5):1264-1272.
APA Liu, Yi.,Liu, Weiguo.,Peng, Zicheng.,Mao, Yingkai.,Wei, Gangjian.,...&Chou, Chen-Lin.(2009).Instability of seawater pH in the South China Sea during the mid-late Holocene: Evidence from boron isotopic composition of corals.GEOCHIMICA ET COSMOCHIMICA ACTA,73(5),1264-1272.
MLA Liu, Yi,et al."Instability of seawater pH in the South China Sea during the mid-late Holocene: Evidence from boron isotopic composition of corals".GEOCHIMICA ET COSMOCHIMICA ACTA 73.5(2009):1264-1272.
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