globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2013.01.022
Scopus记录号: 2-s2.0-84874807824
论文题名:
Late Holocene precipitation variability in the summer rainfall region of South Africa
作者: Stager J.C.; Ryves D.B.; King C.; Madson J.; Hazzard M.; Neumann F.H.; Maud R.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 67
起始页码: 105
结束页码: 120
语种: 英语
英文关键词: Climate change ; Diatoms ; Holocene ; ITCZ ; Lake Sibaya ; Paleoclimatology ; Paleolimnology ; South Africa ; Speleothem ; Stable isotopes
Scopus关键词: Diatoms ; Holocenes ; ITCZ ; Paleoclimatology ; South Africa ; Speleothem ; Stable isotopes ; Climate change ; Isotopes ; Lakes ; Lead ; Paleolimnology ; Rain ; Climate models ; climate change ; decadal variation ; diatom ; Little Ice Age ; numerical model ; paleoclimate ; paleolimnology ; precipitation (climatology) ; rainfall ; resolution ; speleothem ; stable isotope ; summer ; KwaZulu-Natal ; Lake Sibaya ; South Africa
英文摘要: The late Holocene history of the South African summer rainfall zone offers insights into the effects of climate on ecosystems and human societies, as well as into the accuracy of model projections of the future. However, some important aspects of this region's climatic history remain unresolved. Here we present new high-resolution diatom records representing hydrological fluctuations at Lake Sibaya, KwaZulu-Natal, during the last 1800 years. The cores were dated with 14C, 210Pb, 137Cs, and exotic pollen, and were sampled at increments of 1-22 years. A low stand ending ∼AD 150 was followed by additional decadal to century-scale droughts, most notably ∼AD 1540-1760, and several periods of markedly wetter conditions ∼AD 220-290, AD 790-830, AD 1470-1540, and AD 1760-1860. The Medieval Climate Anomaly was generally wetter than average and the Little Ice Age was generally drier, but hydroclimate during both intervals was highly variable. These records confirm that local tree ring and stalagmite gray scale series represent rainfall variability, but they also show that widely cited stable isotope series from Makapansgat do not represent past climate as clearly. Because many interpretations of the climatic history of southern Africa have been influenced by those isotope data, we re-examine late Holocene precipitation variability in the summer rainfall zone, and also address model projections of future precipitation in the region. © 2013 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60672
Appears in Collections:过去全球变化的重建

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作者单位: Natural Sciences, Paul Smith's College, Paul Smiths, NY 12970, United States; Climate Change Institute, University of Maine, Orono, ME 04473, United States; Centre for Hydrological and Ecosystem Science, Department of Geography, Loughborough University, Loughborough, Leicestershire LE11 3TU, United Kingdom; Lincoln College of New England, 2279 Mount Vernon Road, Southington, CT 06489, United States; 4 Railroad Ave., Cold Spring, NY 10516, United States; Forschungsstelle für Paläobotanik, Westfälische Wilhelms-Universität Münster, Schlossplatz 9, 48143 Münster, Germany; Bernard Price Institute of Paleontology, University of the Witwatersrand, Private Bag 3, Wits 2050, South Africa; 68 Ridge Road, Tollgate, Durban 4001, South Africa; 107 N 1st St., Allegany, NY 14706, United States

Recommended Citation:
Stager J.C.,Ryves D.B.,King C.,et al. Late Holocene precipitation variability in the summer rainfall region of South Africa[J]. Quaternary Science Reviews,2013-01-01,67
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