Instability of seawater pH in the South China Sea during the mid-late Holocene: Evidence from boron isotopic composition of corals

ISL OpenIR > 青海盐湖研究所知识仓储

	Instability of seawater pH in the South China Sea during the mid-late Holocene: Evidence from boron isotopic composition of corals
	Liu, Yi 1,2; Liu, Weiguo 2; Peng, Zicheng 1; Mao, Yingkai 3; Wei, Gangjian 4; Sun, Weidong 4; He, Jianfeng 1; Liu, Guijian 1; Chou, Chen-Lin 5
	2009-03-01
发表期刊	GEOCHIMICA ET COSMOCHIMICA ACTA
卷号	73 期号:5 页码:1264-1272
摘要	We 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.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/5904
专题	青海盐湖研究所知识仓储中国科学院青海盐湖研究所
作者单位	1.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
推荐引用方式 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.