气候变化领域集成服务门户(CCPortal): Holocene and Last Interglacial climate of the Faroe Islands from sedimentary plant wax hydrogen and carbon isotopes

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DOI	10.1016/j.quascirev.2019.105930
	Holocene and Last Interglacial climate of the Faroe Islands from sedimentary plant wax hydrogen and carbon isotopes
	Curtin L.; D'Andrea W.J.; Balascio N.; Pugsley G.; de Wet G.; Bradley R.
发表日期	2019
ISSN	0277-3791
卷号	223
英文摘要	The Last Interglacial period (LIG) is Earth's most recent globally warm period and is analogous in some ways to projected future global warming. However, questions remain regarding the state of the climate during the LIG in the North Atlantic, a region that is extremely sensitive to changes in oceanic and atmospheric circulation. Here, we present hydrogen and carbon isotope (δD and δ13C) records from a suite of plant wax biomarkers preserved in Holocene and LIG lacustrine sediments from the North Atlantic Faroe Islands and interpret them as qualitative proxies for temperature and hydroclimate variability. These data are used to directly compare LIG and Holocene climate using the same proxy approaches from the same terrestrial location. Measuring multiple isotopes on multiple types of waxes elucidates the sources of homologous plant waxes. We deduce that the δD values of long-chain n-alkanes (C27–C33) and mid-chain n-alkanes (C23–C25) in these sedimentary archives reflect leaf water and lake water δD values, respectively, while the δD values for both long-chain (C28–C30) and mid-chain n-alkanoic acids (C24–C26) primarily represent lake water δD values. Plant wax-inferred δD values of precipitation during the early Holocene (10,100 to 8,200 cal yr BP) are ∼35‰ more positive than late Holocene values, and decline over the Holocene. δD-inferred hydrologic change and δ13C -inferred plant water use efficiency both indicate that the Faroe Islands became drier throughout the Holocene. Comparison with measurements from LIG plant waxes indicates that late LIG in the Faroe Islands was hydrologically similar to the early-to mid-Holocene (8,200 to 4,000 cal yr BP), with enriched precipitation isotopes and reduced evapotranspiration indicating a warmer, wetter environment. © 2019 Elsevier Ltd
英文关键词	Holocene; Interglacial; North Atlantic; Organic geochemistry; Paleoclimatology; Stable isotopes
语种	英语
scopus关键词	Carbon; Geochemistry; Global warming; Hydrogen; Lakes; Paraffins; Sedimentology; Water supply; Holocenes; Interglacial; North Atlantic; Organic geochemistry; Paleoclimatology; Stable isotopes; Isotopes; atmospheric circulation; carbon isotope; evapotranspiration; global warming; Holocene; hydrogen isotope; hydrological change; interglacial; lacustrine deposit; lake water; Last Interglacial; paleoclimate; stable isotope; water use efficiency; wax; Atlantic Ocean; Atlantic Ocean (North); Faroe Islands
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151727
作者单位	Lamont-Doherty Earth Observatory, Columbia University, 61 Route 9W, Palisades, NY, United States; Department of Earth and Environmental Sciences, Columbia University, New York, NY, United States; Department of Geology, The College of William & Mary, Williamsburg, VA, United States; Department of Geosciences, University of Massachusetts, Amherst, MA, United States
推荐引用方式 GB/T 7714	Curtin L.,D'Andrea W.J.,Balascio N.,et al. Holocene and Last Interglacial climate of the Faroe Islands from sedimentary plant wax hydrogen and carbon isotopes[J],2019,223.
APA	Curtin L.,D'Andrea W.J.,Balascio N.,Pugsley G.,de Wet G.,&Bradley R..(2019).Holocene and Last Interglacial climate of the Faroe Islands from sedimentary plant wax hydrogen and carbon isotopes.Quaternary Science Reviews,223.
MLA	Curtin L.,et al."Holocene and Last Interglacial climate of the Faroe Islands from sedimentary plant wax hydrogen and carbon isotopes".Quaternary Science Reviews 223(2019).